Airworthiness Directives; Airbus Model A330-200, A330-300, A340-200, and A340-300 Series Airplanes, 44937-44943 [E6-12834]

Download as PDF Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules Replacement of Passenger Seat Tracks (f) Within 5,000 flight hours after the effective date of this AD, replace segments of the internal and external passenger seat tracks with new, improved seat tracks, by accomplishing all of the actions specified in the Accomplishment Instructions of EMBRAER Service Bulletin 145–53–0059, Revision 01, dated March 9, 2006. Alternative Methods of Compliance (AMOCs) (g)(1) The Manager, International Branch, ANM–116, Transport Airplane Directorate, FAA, has the authority to approve AMOCs for this AD, if requested in accordance with the procedures found in 14 CFR 39.19. (2) Before using any AMOC approved in accordance with § 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Related Information (h) Brazilian airworthiness directive 2006– 01–01R1, effective May 23, 2006, also addresses the subject of this AD. Issued in Renton, Washington, July 31, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–12832 Filed 8–7–06; 8:45 am] Discussion BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2006–24788; Directorate Identifier 2006–NM–073–AD] RIN 2120–AA64 Airworthiness Directives; Empresa Brasileira de Aeronautica S.A. (EMBRAER) Model ERJ 170 Airplanes Federal Aviation Administration (FAA), Department of Transportation (DOT). ACTION: Proposed rule; withdrawal. AGENCY: sroberts on PROD1PC70 with PROPOSALS VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 We proposed to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) with a notice of proposed rulemaking (NPRM) for a new AD for certain EMBRAER Model ERJ 170 airplanes. That NPRM was published in the Federal Register on May 17, 2006 (71 FR 28628). The NPRM would have required performing a one-time inspection for proper crimping of the terminal lugs for the power cables of each integrated drive generator (IDG), installing a new sleeve on the terminal, and re-crimping if necessary. The NPRM resulted from a report that the terminal lugs for the power cables of the IDGs may not be adequately crimped, which could allow the cables to be pulled out of the terminals with no significant force. The proposed actions were intended to prevent loss of all normal electrical power for the airplane, and consequent reduced controllability of the airplane. Actions Since NPRM Was Issued The FAA withdraws a notice of proposed rulemaking (NPRM) that proposed a new airworthiness directive (AD) for certain EMBRAER Model ERJ 170 airplanes. The proposed AD would have required performing a one-time inspection for proper crimping of the terminal lugs for the power cables of each integrated drive generator (IDG), installing a new sleeve on the terminal, and re-crimping if necessary. Since the proposed AD was issued, we have received new data from the manufacturer that the proposed actions have been done on all affected SUMMARY: airplanes. Accordingly, the proposed AD is withdrawn. ADDRESSES: You may examine the AD docket on the Internet at https:// dms.dot.gov, or in person at the Docket Management Facility office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The Docket Management Facility office (telephone (800) 647–5227) is located on the plaza level of the Nassif Building at the U.S. Department of Transportation, 400 Seventh Street, SW., Room PL–401, Washington, DC. This docket number is FAA–2006–24788; the directorate identifier for this docket is 2006–NM– 073–AD. FOR FURTHER INFORMATION CONTACT: Todd Thompson, Aerospace Engineer, International Branch, ANM–116, Transport Airplane Directorate, FAA, 1601 Lind Avenue, SW., Renton, Washington 98057–3356; telephone (425) 227–1175; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Since we issued the NPRM, Empresa Brasileira de Aeronautica S.A. (EMBRAER), the airplane manufacturer, has informed us that the proposed actions have been done on all affected airplanes. FAA’s Conclusions Upon further consideration, we have determined that the proposed actions are no longer necessary because the proposed actions have already been accomplished on all airplanes listed in the applicability of the NPRM. Accordingly, the NPRM is withdrawn. PO 00000 Frm 00005 Fmt 4702 Sfmt 4702 44937 Withdrawal of the NPRM does not preclude the FAA from issuing another related action or commit the FAA to any course of action in the future. Regulatory Impact Since this action only withdraws an NPRM, it is neither a proposed nor a final rule and therefore is not covered under Executive Order 12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979). List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Withdrawal Accordingly, we withdraw the NPRM, Docket No. FAA–2006–24788, Directorate Identifier 2006–NM–073– AD, which was published in the Federal Register on May 17, 2006 (71 FR 28628). Issued in Renton, Washington, on July 27, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–12836 Filed 8–7–06; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 2001–NM–381–AD] RIN 2120–AA64 Airworthiness Directives; Airbus Model A330–200, A330–300, A340–200, and A340–300 Series Airplanes Federal Aviation Administration, Department of Transportation (DOT). ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period. AGENCY: SUMMARY: This document revises an earlier proposed airworthiness directive (AD), applicable to all Airbus Model A330, A340–200, and A340–300 series airplanes. The original NPRM would have required repetitive inspections for discrepancies of the grease and gear teeth of the radial variable differential transducer of the nose wheel steering gearbox; or repetitive inspections for damage of the chrome on the bearing surface of the nose landing gear (NLG) main fitting barrel; as applicable. And, for airplanes with any discrepancy or damage, the original NPRM would have required an additional inspection or E:\FR\FM\08AUP1.SGM 08AUP1 44938 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules corrective actions. This new action revises the proposed rule by adding a terminating action and removing certain airplanes from the applicability. The actions specified by this new proposed AD are intended to prevent incorrect operation or jamming of the nose wheel steering, which could cause reduced controllability of the airplane on the ground. This action is intended to address the identified unsafe condition. DATES: Comments must be received by September 5, 2006. ADDRESSES: Submit comments in triplicate to the Federal Aviation Administration (FAA), Transport Airplane Directorate, ANM–114, Attention: Rules Docket No. 2001–NM– 381–AD, 1601 Lind Avenue, SW., Renton, Washington 98057–3356. Comments may be inspected at this location between 9 a.m. and 3 p.m., Monday through Friday, except Federal holidays. Comments may be submitted via fax to (425) 227–1232. Comments may also be sent via the Internet using the following address: 9-anmnprmcomment@faa.gov. Comments sent via fax or the Internet must contain ‘‘Docket No. 2001–NM–381–AD’’ in the subject line and need not be submitted in triplicate. Comments sent via the Internet as attached electronic files must be formatted in Microsoft Word 97 or 2000 or ASCII text. For the service information referenced in the proposed rule, contact Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex, France. This information may be examined at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington. FOR FURTHER INFORMATION CONTACT: Tim Backman, Aerospace Engineer, International Branch, ANM–116, FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98055–4056; telephone (425) 227–2797; fax (425) 227–1149. SUPPLEMENTARY INFORMATION: Comments Invited Interested persons are invited to participate in the making of the proposed rule by submitting such written data, views, or arguments as they may desire. Communications shall identify the Rules Docket number and be submitted in triplicate to the address specified above. All communications received on or before the closing date for comments, specified above, will be considered before taking action on the proposed rule. The proposals contained in this action may be changed in light of the comments received. Submit Comments Using the Following Format • Organize comments issue-by-issue. For example, discuss a request to change the compliance time and a request to change the service bulletin reference as two separate issues. • For each issue, state what specific change to the proposed AD is being requested. • Include justification (e.g., reasons or data) for each request. Comments are specifically invited on the overall regulatory, economic, environmental, and energy aspects of the proposed rule. All comments submitted will be available, both before and after the closing date for comments, in the Rules Docket for examination by interested persons. A report summarizing each FAA-public contact concerned with the substance of this proposal will be filed in the Rules Docket. Commenters wishing the FAA to acknowledge receipt of their comments submitted in response to this action must submit a self-addressed, stamped postcard on which the following statement is made: ‘‘Comments to Docket Number 2001–NM–381–AD.’’ The postcard will be date stamped and returned to the commenter. Availability of NPRMs Any person may obtain a copy of this NPRM by submitting a request to the FAA, Transport Airplane Directorate, ANM–114, Attention: Rules Docket No. 2001–NM–381–AD, 1601 Lind Avenue, SW., Renton, Washington 98055–4056. Discussion A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to add an airworthiness directive (AD), applicable to all Airbus Model A330, A340–200, and A340–300 series airplanes, was published as a notice of proposed rulemaking (NPRM) in the Federal Register on June 16, 2004 (69 FR 33592). That original NPRM would have required repetitive detailed inspections for discrepancies of the grease and gear teeth of the radial variable differential transducer (RVDT) of the nose wheel steering (NWS) gearbox; or repetitive detailed inspections for damage of the chrome on the bearing surface of the nose landing gear (NLG) main fitting barrel; as applicable. For airplanes with any discrepancy or damage, the original NPRM would have required an additional inspection or corrective actions. The original NPRM was prompted by ´ ´ a report from the Direction Generale de l’Aviation Civile (DGAC), which is the airworthiness authority for France, of the failure of the NWS system on a Model A340 airplane. Problems associated with this failure, if not corrected, could result in incorrect operation or jamming of the NWS, and reduced controllability of the airplane on the ground. Actions Since Issuance of Previous Proposal The original NPRM was intended to address the unsafe condition identified in French airworthiness directives 2001–503(B) and 2001–504(B). Since we issued that NPRM, the DGAC has cancelled those airworthiness directives and issued new rulemaking on this subject to add a terminating action and remove airplanes modified in production. Explanation of New Service Information Airbus has issued the following Airbus service bulletins: SERVICE BULLETINS Airplane models Messier-Dowty service bulletins referred to in Airbus service bulletins A330–32–3134, Revision 03, dated May 11, 2005, and Revision 04, dated April 3, 2006. A330–200 and –300 series airplanes. A340–32–4172, Revision 03, dated May 11, 2005, and Revision 04, dated April 3, 2006. A340–200 and –300 series airplanes. Special Inspection Service Bulletins D23285– 32–037, Revision 2, dated May 23, 2002; and D23285–32–044, dated January 12, 2004. Special Inspection Service Bulletins D23285– 32–037, Revision 2, dated May 23, 2002; and D23285–32–044, dated January 12, 2004. Action Airbus service bulletin sroberts on PROD1PC70 with PROPOSALS Repetitive inspections VerDate Aug<31>2005 20:20 Aug 07, 2006 Jkt 208001 PO 00000 Frm 00006 Fmt 4702 Sfmt 4702 E:\FR\FM\08AUP1.SGM 08AUP1 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules 44939 SERVICE BULLETINS—Continued Airplane models Action Airbus service bulletin Modification ................. A330–32–3164, dated June 27, 2003, and Revision 01, dated March 21, 2006. A340–32–4204, dated June 27, 2003, and Revision 01, dated March 21, 2006. A330–32–3192, dated December 8, 2005 ..... Modification ................. sroberts on PROD1PC70 with PROPOSALS A340–32–4227, dated December 8, 2005 ..... Service Bulletins A330–32–3134 and A340–32–4172, both Revision 02, both dated August 8, 2003, were described in the original NPRM. Revisions 03 and 04 of these service bulletins provides minor changes only; the procedures remain essentially unchanged. Service Bulletins A330–32–3164 and A340–32–4204 describe an inspection to identify the suffix number on the NLG leg assembly. For affected leg assemblies, the service bulletins also describe procedures for a modification that will improve the sealing between the RVDT gearboxes and the NLG steering collar to help prevent contamination of the RVDT gearboxes and the NLG main fitting. The modification involves replacing the RVDT drive gear ring and the housing of the NLG steering gear ring. Service Bulletins A330–32–3192 and A340–32–4227 describe an inspection to identify the suffix number on the NLG leg assemblies. For affected leg assemblies, the service bulletins also describe procedures for an NLG modification that will reduce wear and damage of the reinforced NLG steering collar and NLG main fitting. The modification involves adding two grease points and new bushes with revised grease paths, which will allow better grease distribution into the steering collar assembly. The modification also involves increasing the internal diameter tolerances of the steering collar, which will reduce the risk of contact between the steering collar and the main fitting at low temperature. Accomplishing both modifications described in Airbus Service Bulletins A330–32–3164, A340–32–4204, A330– 32–3192, and A340–32–4227, as applicable, eliminates the need for the repetitive inspections. Accomplishing the actions specified in the service information described above is intended to adequately address the unsafe condition. The DGAC mandated the service information and issued French airworthiness directives F–2005–209 and F–2005–210, both dated December 21, 2005, to ensure the VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 Messier-Dowty service bulletins referred to in airbus service bulletins A330–200 and –300 series airplanes. A340–200 and –300 series airplanes. A330–200 and –300 series airplanes. A340–200 and –300 series airplanes. Service Bulletin D23285–32–042, dated June 19, 2003. Service Bulletin D23285–32–042, dated June 19, 2003. Service Bulletin D23581–32–047, dated December 1, 2005. Service Bulletin D23581–32–047, dated December 1, 2005. continued airworthiness of these airplanes in France. FAA’s Determination In light of the DGAC’s new rulemaking and the corresponding revised service bulletins described above, we have revised the supplemental NPRM to refer to the new information. Comments Interested persons have been afforded an opportunity to participate in the making of this amendment. Due consideration has been given to the comments received. Support for the Proposed AD One commenter, U.S. Airways, supports the original NPRM and the flexibility it offers in allowing operators the option of either inspecting the bearing surface or analyzing a grease sample. The commenter observes that this flexibility will allow operators to choose the inspection method and interval that best suit their maintenance schedules. Request To Clarify Inspection Conditions Paragraphs (b), (c), and (d) of the original NPRM specify inspection requirements and compliance times based on accomplishment of Airbus Modification 51381. The procedures for the modification are described in Airbus Service Bulletins A330–32–3164 and A340–32–4204. One commenter, Airbus, suggests that identifying those service bulletins in the AD would help operators define the configuration of their airplanes to determine the relevant inspections. We infer that Airbus is requesting that we exclude from the AD applicability those airplanes on which the modification service bulletins have been accomplished in service. We disagree with the request. Although the applicability of French airworthiness directives F–2005–209 and F–2005–210 excludes airplanes on which Airbus Service Bulletins A340–32–4204 and PO 00000 Frm 00007 Fmt 4702 Sfmt 4702 A330–32–3164 (as well as A340–32– 4227 and A330–32–3192) were done in service, the applicability of this supplemental NPRM does not exclude those airplanes. This supplemental NPRM would instead require the applicable modification(s) for airplanes with affected NLG leg assemblies, as specified in those service bulletins. This requirement would ensure that the applicable actions specified in the service bulletins and proposed in this supplemental NPRM are accomplished for all affected airplanes. Request To Revise Inspection Requirement for Certain Conditions Paragraph (d)(1) of the original NPRM specifies detailed inspections for discrepancies of the grease and gear teeth. One commenter, Airbus, states that operators cannot do a detailed inspection, as that term is defined in the original NPRM, of the grease because the associated service information instead specifies that the grease sample be sent to a laboratory for analysis. (This procedure is described in the secondary service bulletin, Messier-Dowty Special Inspection Service Bulletin D23285–32– 037, for airplanes without Airbus Modification 51381 installed in production.) The commenter requests that we revise paragraph (d)(1) of the original NPRM to require a detailed inspection only of the gear teeth, which would be in line with the wording and instructions of the applicable service bulletins. Another commenter, Northwest Airlines, requests that we revise the original NPRM to clarify that it would require only a detailed inspection —not a lab analysis—of the grease. We partially agree. We agree that the inspection of the grease and the inspection of the gear teeth are different types of actions. And we agree with Airbus that a detailed inspection of the grease is not the appropriate terminology. But paragraph 2.B. of the Accomplishment Instructions of Messier-Dowty Special Inspection Service Bulletin D23285–32–037 E:\FR\FM\08AUP1.SGM 08AUP1 44940 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules specifies a grease ‘‘inspection,’’ which involves an analysis of the grease by sending grease samples to a lab for inspection and determination of further actions. We have revised the proposed requirement (paragraph (a)(1) in this supplemental NPRM) to distinguish an ‘‘inspection’’ of the grease (sending the grease to a laboratory for analysis) from a ‘‘detailed inspection’’ of the gear teeth. We disagree with Northwest Airlines’ request to clarify that only a detailed inspection is required. As previously discussed, the AD requires two separate actions: A detailed inspection of the gear teeth and an inspection of the grease. The grease inspection specified in the Accomplishment Instructions involves analysis of the grease sample either by Messier-Dowty or another lab. We have not changed the final rule regarding this issue. sroberts on PROD1PC70 with PROPOSALS Request To Cite Latest Service Information One commenter, Northwest Airlines, requests that we revise the original NPRM to refer to the latest revision of Messier-Dowty Special Inspection Service Bulletin D23285–32–037, which is Revision 2, dated May 23, 2002. As revised, the service bulletin provides for the grease analysis to be done at a lab chosen by the operator; however, a reporting form with results must be returned to Messier-Dowty. Likewise, this supplemental NPRM would provide for the option that the grease analysis be done at a lab chosen by the operator with the results to be evaluated by Messier-Dowty. Note 2 in this supplemental NPRM refers to Revision 2 of the service bulletin. Request To Define Allowable Grease Particle Content One commenter, U.S. Airways, which operates Model A330 airplanes, notes that there are no allowable limits for the grease particle content provided in Airbus Service Bulletin A330–32–3134 or Messier-Dowty Special Inspection Service Bulletin D23285–32–037. The original NPRM would allow only Messier-Dowty to do the grease sample analysis. The commenter requests that we revise the original NPRM to define acceptable grease particle content and permit operators to use alternative lab facilities to analyze the grease. We partially agree with the requests. As stated previously, Messier-Dowty Special Inspection Service Bulletin D23285–32–037 was revised to provide for the grease analysis to be done at a lab chosen by the operator. However, the criteria for acceptable grease particle content are complex and not appropriate to include in this VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 supplemental NPRM. The grease analysis process includes establishing reference spectra for new grease samples, establishing the spectra for each grease sample taken, comparing the sample spectra to the reference, and identifying polluting agents. The allowable pollutant constituents, their allowable size and weights, and specification of the acceptable ranges for constituent concentrations of the grease when compared to the reference would greatly increase the complexity of this supplemental NPRM. Therefore, we have determined that it is necessary for operators to send the results to MessierDowty for evaluation. Request To Revise Compliance Time for Analysis As stated previously, Messier-Dowty Special Inspection Service Bulletin D23285–32–037 specifies sending grease samples to Messier-Dowty for analysis. If the grease sample analysis indicates any discrepancy, paragraph (d)(1) of the original NPRM would require a detailed inspection of the bearing surface within 3 months. One commenter, U.S. Airways, questions whether the 3month period should be counted from the day the grease sample was taken or the day the results were provided to the operator. The commenter requests that we revise the original NPRM to specifically require the bearing surface inspection within 3 months after Messier-Dowty advises operators of discrepant results. According to the commenter, this suggested compliance time would avoid problems associated with the possible lag time between the time the operator sends a sample to the manufacturer and the time the operator receives the results. If an extended time is required for the analysis, operators may be required to inspect the bearing surface without adequate planning time. We do not agree with the request. We have determined that the bearing surface must be inspected within 3 months after the initial inspections of the grease and teeth. However, as previously stated, operators have their option of laboratories for the grease analysis, which could effectively lessen the impact on Messier-Dowty and decrease the lag time between submitting samples and receiving results. In addition, operators may request an extension of this time, in accordance with paragraph (j) of this supplemental NPRM, if data are supplied that will ensure the continued operational safety of the fleet pending receipt of the lab analysis. We have not changed this proposed requirement (paragraph (a)(1) in this supplemental NPRM). PO 00000 Frm 00008 Fmt 4702 Sfmt 4702 Request To Clarify Inspection Requirements One commenter, Airbus, considers that paragraph (e) of the original NPRM could be interpreted as requiring the same type of inspection at each interval. The commenter notes that Airbus Service Bulletins A330–32–3134 and A340–32–4172 offer operators the option of inspecting either the grease and gear teeth or the chrome on the bearing surface of the NLG main fitting barrel under the NWS rotating sleeve at the next inspection, within the applicable compliance times. The commenter requests that we clarify the repetitive inspection requirement. We agree that clarification is necessary. For each subsequent repetitive inspection, operators have the option of doing either inspection— regardless of the most recent inspection type performed, provided subsequent inspections are done within the specified intervals. The revisions in paragraph (c) in this supplemental NPRM are intended to clarify this issue. Request To Clarify Inspection Compliance Time One commenter, Northwest Airlines, requests that we clarify the compliance times for the initial inspection in the original NPRM. The commenter suggests the following language: ‘‘If the NLG is more than 5 years old (since new or overhauled), accomplish the inspection within 700 flight hours of the effective date of the AD.’’ The commenter states that this will agree with Airbus Service Bulletin A330–32–3134. We do not agree. The commenter’s requested change would allow additional time for some airplanes. We have determined that the compliance times, as proposed, will ensure an acceptable level of safety. We have not changed this supplemental NPRM regarding this issue. Request To Revise Cost Estimate The Cost Impact section of the original NPRM states that the chrome inspection (on the bearing surface under the rotating sleeve) would take about 2 work hours, and the grease and gear teeth inspection (on the RVDT ring) would take about 8 work hours. One commenter, Northwest Airlines, states that these estimates do not agree with those specified in the service information: • For the chrome inspection, Airbus Service Bulletin A330–32–3134 specifies 17 work hours to inspect, including 9 hours to prepare, test, and close up; and Messier-Dowty Service Bulletin D23285–32–037 specifies 8 E:\FR\FM\08AUP1.SGM 08AUP1 44941 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules work hours to inspect the bearing surface. • For the grease inspection, Airbus Service Bulletin A330–32–3134 (and A340–32–4172) specifies 10 work hours to inspect, including 8 hours to prepare, test, and close up; and Messier-Dowty Service Bulletin D23285–32–037 specifies 2 work hours to inspect the grease and gear teeth. The commenter states that the differences between the work hours for actual and incidental tasks will significantly affect the planning and scheduling of these inspection tasks. We partially agree with the commenter’s interepretation of the service bulletin labor estimates. We have included work hours for postinspection test preparation and tests. The cost estimates provided in the original NPRM generally reflect only the direct costs of the specific required actions based on the best data available from the manufacturer. We recognize that operators may incur incidental costs (such as the time for planning, access and close, and associated administrative actions) in addition to the direct costs. The cost analysis in ADs, however, typically does not include incidental costs. The compliance times in this supplemental NPRM should allow ample time for operators to do the required actions at the same time as scheduled major airplane inspection and maintenance activities, which would reduce the additional time and costs associated with special scheduling. Additional Changes to Original NPRM 1. We have revised the applicability of the original NPRM to identify model designations as published in the most recent type certificate data sheet for the affected models. Although Model A330– 302 and –303 airplanes have not yet been type certificated, FAA approval of these models is in process. We have changed the applicability in this supplemental NPRM to more closely parallel the effectivity section of the French airworthiness directives; the revised reference to Model A330 airplanes includes Model A330–302 and –303 airplanes. 2. We revised the inspection requirements to distinguish airplanes by configuration. Paragraphs (a) through (c) in this supplemental NPRM apply to airplanes without Airbus Modification 51381. Paragraph (d) in this supplemental NPRM applies to airplanes with the modification. 3. We have revised this action to clarify the appropriate procedure for notifying the principal inspector before using any approved AMOC on any airplane to which the AMOC applies. 4. After we issued the original NPRM, we reviewed the figures we have used over the past several years to calculate AD costs to operators. To account for various inflationary costs in the airline industry, we find it necessary to increase the labor rate used in these calculations from $65 per work hour to $80 per work hour. The cost impact information, below, reflects this increase in the specified hourly labor rate. Conclusion Since certain changes expand the scope of the originally proposed rule, the FAA has determined that it is necessary to reopen the comment period to provide additional opportunity for public comment. Cost Impact The following table provides the estimated costs for U.S. operators to comply with this supplemental NPRM. ESTIMATED COSTS Action Work hours RVDT inspection, per inspection cycle ........................ Chrome inspection, per inspection cycle ..................... Modification (Service Bulletin A330–32–3164 or A340–32–4204). Rotating sleeve grease system modification (Service Bulletin A330–32–3192 or A340–32–4227). sroberts on PROD1PC70 with PROPOSALS Authority for This Rulemaking Title 49 of the United States Code specifies the FAA’s authority to issue rules on aviation safety. Subtitle I, Section 106, describes the authority of the FAA Administrator. Subtitle VII, Aviation Programs, describes in more detail the scope of the Agency’s authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701, ‘‘General requirements.’’ Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 Average labor rate per hour 6 13 15 $80 80 80 15 80 Parts Cost per airplane None ........... None ........... 10,244 to $11,337. Unknown ..... $480 ............ $1,040 ......... $11,444 to $12,537. From $1,200 that is likely to exist or develop on products identified in this rulemaking action. Regulatory Impact The regulations proposed herein would not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. Therefore, it is determined that this proposal would not have federalism implications under Executive Order 13132. For the reasons discussed above, I certify that this proposed regulation (1) is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) is not a ‘‘significant rule’’ under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) if PO 00000 Frm 00009 Fmt 4702 Sfmt 4702 Number of U.S.-registered airplanes 11 15 12 23 Fleet cost $5,280. 15,600. 137,328 to $150,444. From $27,600. promulgated, will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. A copy of the draft regulatory evaluation prepared for this action is contained in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the location provided under the caption ADDRESSES. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. The Proposed Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration proposes to amend part E:\FR\FM\08AUP1.SGM 08AUP1 44942 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. Section 39.13 is amended by adding the following new airworthiness directive: Airbus: Docket 2001–NM–381–AD. Applicability: The following airplanes, certificated in any category, except those modified in production by both Airbus Modifications 51381 and 53073: Model A330–201, –202, –203, –223, and –243 airplanes Model A330–301, –302, –303, –321, –322, –323, –341, –342, and –343 airplanes Model A340–211, –212, and –213 airplanes Model A340–311, –312, and –313 airplanes Compliance: Required as indicated, unless accomplished previously. To prevent incorrect operation or jamming of the nose wheel steering (NWS), which could cause reduced controllability of the airplane on the ground, accomplish the following: Inspections: Airplanes Without Modification 51381 (a) For airplanes that were not modified in production by Airbus Modification 51381: Do the inspection specified in either paragraph (a)(1) or (a)(2) of this AD, in accordance with the required service bulletin identified in Table 1 of this AD, as applicable. The required compliance time is specified in paragraph (b) of this AD. (1) Inspect for discrepancies of the grease by sending it to a laboratory for analysis, and do a detailed inspection for discrepancies of the gear teeth of the radial variable differential transducer (RVDT) driving ring and the gears in the RVDT gearboxes. If there are no discrepancies (such as metallic particles in the grease, abnormal wear of the gear teeth, or missing rubber sealant at the mating face between the main fitting and the RVDT gearbox), repeat the inspection as specified in paragraph (c) of this AD. If there is any discrepancy, do the inspection in paragraph (a)(2) of this AD within 3 months after the inspection specified in paragraph (a)(1) of this AD. (2) Do a detailed inspection for damage of the chrome on the bearing surface of the nose landing gear (NLG) main fitting barrel under the NWS rotating sleeve. If there is no damage (such as flaking, corrosion, or blistering), repeat the inspection as specified in paragraph (c) of this AD. If there is any damage, before further flight, do the corrective action in paragraph (e) of this AD. Note 1: For the purposes of this AD, a detailed inspection is defined as: ‘‘An intensive visual examination of a specific structural area, system, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at intensity deemed appropriate by the inspector. Inspection aids such as mirror, magnifying lenses, etc., may be used. Surface cleaning and elaborate access procedures may be required.’’ TABLE 1.—INSPECTION SERVICE BULLETINS Approved revision level (for actions done before the effective date of the AD) Airplane models Airbus service bulletin Required revision level A330–200 and A330–300 series airplanes. A330–32–3134 ............................. Revision 04, dated April 3, 2006 .. sroberts on PROD1PC70 with PROPOSALS A340–200 and A330–300 series airplanes. A340–32–4172 ............................. (b) For airplanes identified in paragraph (a) of this AD: Do the initial inspection specified in paragraph (a) of this AD at the latest of the following times: (1) Within 60 months after the date that the new NLG was installed on the airplane. (2) Within 60 months after the last major NLG overhaul accomplished before the effective date of this AD. (3) Within 700 flight hours after the effective date of this AD. (c) For airplanes identified in paragraph (a) of this AD: Repeat either inspection specified in paragraph (a)(1) or (a)(2) of this AD at intervals not to exceed the applicable interval specified in paragraph (c)(1) or (c)(2) of this AD, until the requirements of paragraph (g) of this AD are done. (1) If the most recent inspection was the inspection specified in paragraph (a)(1) of this AD, then the next inspection must be done within 8 months. (2) If the most recent inspection was the inspection specified in paragraph (a)(2) of VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 Revision 04, dated April 3, 2006 .. Original, 2001. Revision 2001. Revision 2003. Revision Original, 2001. Revision 2001. Revision 2003. Revision dated September 11, 01, dated November 29, 02, dated August 8, 03, dated May 11, 2005. dated September 11, 01, dated November 29, 02, dated August 8, 03, dated May 11, 2005. this AD, then the next inspection must be done within 18 months. Follow-On Investigative and Corrective Actions Repetitive Inspections: Airplanes With Modification 51381 (e) For all airplanes: If any damage or discrepancy is found during any inspection required by this AD, do the corrective action before further flight in accordance with the applicable required Airbus service bulletin identified in Table 1 of this AD, with the following exceptions: (1) If discrepancies are found during any inspection specified in paragraph (a)(1) of this AD, the inspection in paragraph (a)(2) of this AD is required within 3 months. (2) Where the service bulletin recommends contacting Messier-Dowty for appropriate action: Repair before further flight in accordance with a method approved by either the Manager, International Branch, ANM–116, FAA, Transport Airplane Directorate; or the Direction Generale de l’Aviation Civile (DGAC) (or its delegated agent). Note 2: Airbus Service Bulletins A330–32– 3134 and A340–32–4172 refer to Messier- (d) For airplanes modified in production by Airbus Modification 51381: Perform a detailed inspection for damage of the chrome on the bearing surface of the nose landing gear (NLG) main fitting barrel under the NWS rotating sleeve. Do the inspection at the later of the times specified in paragraphs (d)(1) and (d)(2) of this AD in accordance with the applicable required service bulletin identified in Table 1 of this AD. Repeat the inspection thereafter at intervals not to exceed 18 months, until the requirements of paragraph (g) of this AD have been done. (1) Within 60 months after the date that the new NLG was installed on the airplane. (2) Within 60 months after the last major NLG overhaul accomplished before the effective date of this AD. PO 00000 Frm 00010 Fmt 4702 Sfmt 4702 E:\FR\FM\08AUP1.SGM 08AUP1 Federal Register / Vol. 71, No. 152 / Tuesday, August 8, 2006 / Proposed Rules Dowty Special Inspection Service Bulletins D23285–32–037, Revision 2, dated May 23, 2002; and D23285–32–044, dated January 12, 2004; as additional sources of service information for the inspections. Credit for Prior Accomplishment (f) Actions done before the effective date of this AD in accordance with an applicable Approved Revision Level of the service bulletin identified in Table 1 of this AD are acceptable for compliance with the corresponding requirements of paragraphs (a), (d), and (e) of this AD. Modification (g) For all airplanes: At the applicable time specified in paragraph (g)(1) or (g)(2) of this AD, modify the NLG as specified in Table 2 of this AD, as applicable. (1) For NLGs overhauled before the effective date of this AD: At the later of the times specified in paragraphs (g)(1)(i) and (g)(1)(ii) of this AD: 44943 (i) Within 60 months since the NLG was overhauled or 180 months since the NLG was new, whichever occurs first. (ii) Within 6 months after the effective date of this AD. (2) For NLGs not overhauled before the effective date of this AD: Within 120 months since the NLG was new, or within 6 months after the effective date of this AD, whichever occurs later. TABLE 2.—MODIFICATION For airplanes— Modify the NLG in accordance with— Without Airbus Modifications 51381 and 53073 done in production ....... Both Airbus Service Bulletins A330–32–3164, dated June 27, 2003, or Revision 1, dated March 21, 2006; and A330–32–3192, dated December 8, 2005; Or both Airbus Service Bulletins A340–32–4204, dated June 27, 2003, or Revision 1, dated March 21, 2006; and A340–32–4227, dated December 8, 2005. Airbus Service Bulletin A330–32–3192, dated December 8, 2005; or A340–32–4227, dated December 8, 2005. Airbus Service Bulletin A330–32–3164, dated June 27, 2003, or Revision 01, dated March 21, 2006; or A340–32–4204, dated June 27, 2003, or Revision 01, dated March 21, 2006. With Airbus Modification 51381 but not Airbus Modification 53073 done in production. With Airbus Modification 53073 but not Airbus Modification 51381 done in production. Terminating Action (h) Accomplishment of both NLG modifications specified in paragraph (g) of this AD terminates the repetitive inspection requirements of this AD. Note 3: Airbus Service Bulletins A330–32– 3164 and A340–32–4204 refer to MessierDowty Service Bulletin D23285–32–042, dated June 19, 2003, as an additional source of service information for the modification. Note 4: Airbus Service Bulletins A330–32– 3192 and A340–32–4227 refer to MessierDowty Service Bulletin D23581–32–047, dated December 1, 2005, as an additional source of service information for the modification. Reporting (i) Certain service bulletins specify to submit a report to the manufacturer. This AD does not require a report, unless the grease analysis required by paragraph (a)(1) of this AD is done at a lab chosen by the operator, which requires the results to be evaluated by Messier-Dowty. sroberts on PROD1PC70 with PROPOSALS Alternative Methods of Compliance (j)(1) In accordance with 14 CFR 39.19, the Manager, International Branch, ANM–116, is authorized to approve alternative methods of compliance for this AD. (2) Before using any AMOC approved in accordance with 14 CFR 39.19 on any airplane to which the AMOC applies, notify the appropriate principal inspector in the FAA Flight Standards Certificate Holding District Office. Note 5: The subject of this AD is addressed in French airworthiness directives F–2005– 209 and F–2005–210, both dated December 21, 2005. VerDate Aug<31>2005 18:27 Aug 07, 2006 Jkt 208001 Issued in Renton, Washington, on July 31, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–12834 Filed 8–7–06; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF COMMERCE Bureau of Industry and Security 15 CFR Parts 740, 742, 744, and 748 Meetings in Boston, Chicago, Houston and La Jolla With Interested Public on the Proposed Rule: Revisions and Clarification of Export and Reexport Controls for the People’s Republic of China (PRC); New Authorization Validated End-User ACTION: Notice of meetings. SUMMARY: The Bureau of Industry and Security (BIS) will hold meetings on August 15, 17, 21 and 22, 2006 for those companies, organizations, and individuals that have an interest in understanding the United States’ revised policy for exports and reexports of dual-use items to the People’s Republic of China (PRC) as presented in the proposed rule published in the Federal Register on July 6, 2006. U.S. Government officials will explain the amendments proposed in the rule and answer questions from the public. DATES: The meeting dates are: PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 1. August 15, 2006, 12:00 noon, Boston, Massachusetts. 2. August 17, 2006, 10:30 a.m., Chicago, Illinois. 3. August 21, 2006, 9:00 a.m., Houston, Texas. 4. August 22, 2006, 8:30 a.m., La Jolla, California. The meeting locations are: 1. Boston—Doubletree Guest Suites Boston/Waltham, 550 Winter Street, Waltham, Massachusetts 02451. 2. Chicago—Four Points Sheraton/ Chicago O’Hare, 10249 W. Irving Park Road, Schiller Park, Illinois 60176. 3. Houston—University of Houston, Small Business Development Center, Suite 200, 2302 Fannin Street, Houston, Texas 77002. 4. La Jolla—The University of California, San Diego Campus, Institute of the Americas, Copley International Conference Center, Hojel Hall of the Americas Auditorium, 10111 North Torrey Pines Road, La Jolla, California 92037. ADDRESSES: For further information please contact the Outreach and Educational Services Division at telephone number (202) 482–4811, the Western Region Office at telephone number (949) 660–0144 ext. 0, or Kathleen Barfield at (202) 482– 5491. FOR FURTHER INFORMATION CONTACT: Status: These meetings will be open to the public. SUPPLEMENTARY INFORMATION: E:\FR\FM\08AUP1.SGM 08AUP1

Agencies

[Federal Register Volume 71, Number 152 (Tuesday, August 8, 2006)]
[Proposed Rules]
[Pages 44937-44943]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-12834]

-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2001-NM-381-AD]
RIN 2120-AA64

Airworthiness Directives; Airbus Model A330-200, A330-300, A340-
200, and A340-300 Series Airplanes

AGENCY: Federal Aviation Administration, Department of Transportation
(DOT).

ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of
comment period.

-----------------------------------------------------------------------

SUMMARY: This document revises an earlier proposed airworthiness
directive (AD), applicable to all Airbus Model A330, A340-200, and
A340-300 series airplanes. The original NPRM would have required
repetitive inspections for discrepancies of the grease and gear teeth
of the radial variable differential transducer of the nose wheel
steering gearbox; or repetitive inspections for damage of the chrome on
the bearing surface of the nose landing gear (NLG) main fitting barrel;
as applicable. And, for airplanes with any discrepancy or damage, the
original NPRM would have required an additional inspection or

[[Page 44938]]

corrective actions. This new action revises the proposed rule by adding
a terminating action and removing certain airplanes from the
applicability. The actions specified by this new proposed AD are
intended to prevent incorrect operation or jamming of the nose wheel
steering, which could cause reduced controllability of the airplane on
the ground. This action is intended to address the identified unsafe
condition.

DATES: Comments must be received by September 5, 2006.

ADDRESSES: Submit comments in triplicate to the Federal Aviation
Administration (FAA), Transport Airplane Directorate, ANM-114,
Attention: Rules Docket No. 2001-NM-381-AD, 1601 Lind Avenue, SW.,
Renton, Washington 98057-3356. Comments may be inspected at this
location between 9 a.m. and 3 p.m., Monday through Friday, except
Federal holidays. Comments may be submitted via fax to (425) 227-1232.
Comments may also be sent via the Internet using the following address:
9-anm-nprmcomment@faa.gov. Comments sent via fax or the Internet must
contain ``Docket No. 2001-NM-381-AD'' in the subject line and need not
be submitted in triplicate. Comments sent via the Internet as attached
electronic files must be formatted in Microsoft Word 97 or 2000 or
ASCII text.
For the service information referenced in the proposed rule,
contact Airbus, 1 Rond Point Maurice Bellonte, 31707 Blagnac Cedex,
France. This information may be examined at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton, Washington.

FOR FURTHER INFORMATION CONTACT: Tim Backman, Aerospace Engineer,
International Branch, ANM-116, FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425)
227-2797; fax (425) 227-1149.

SUPPLEMENTARY INFORMATION:

Comments Invited

Interested persons are invited to participate in the making of the
proposed rule by submitting such written data, views, or arguments as
they may desire. Communications shall identify the Rules Docket number
and be submitted in triplicate to the address specified above. All
communications received on or before the closing date for comments,
specified above, will be considered before taking action on the
proposed rule. The proposals contained in this action may be changed in
light of the comments received.

Submit Comments Using the Following Format

Organize comments issue-by-issue. For example, discuss a
request to change the compliance time and a request to change the
service bulletin reference as two separate issues.
For each issue, state what specific change to the proposed
AD is being requested.
Include justification (e.g., reasons or data) for each
request.
Comments are specifically invited on the overall regulatory,
economic, environmental, and energy aspects of the proposed rule. All
comments submitted will be available, both before and after the closing
date for comments, in the Rules Docket for examination by interested
persons. A report summarizing each FAA-public contact concerned with
the substance of this proposal will be filed in the Rules Docket.
Commenters wishing the FAA to acknowledge receipt of their comments
submitted in response to this action must submit a self-addressed,
stamped postcard on which the following statement is made: ``Comments
to Docket Number 2001-NM-381-AD.'' The postcard will be date stamped
and returned to the commenter.

Availability of NPRMs

Any person may obtain a copy of this NPRM by submitting a request
to the FAA, Transport Airplane Directorate, ANM-114, Attention: Rules
Docket No. 2001-NM-381-AD, 1601 Lind Avenue, SW., Renton, Washington
98055-4056.

Discussion

A proposal to amend part 39 of the Federal Aviation Regulations (14
CFR part 39) to add an airworthiness directive (AD), applicable to all
Airbus Model A330, A340-200, and A340-300 series airplanes, was
published as a notice of proposed rulemaking (NPRM) in the Federal
Register on June 16, 2004 (69 FR 33592). That original NPRM would have
required repetitive detailed inspections for discrepancies of the
grease and gear teeth of the radial variable differential transducer
(RVDT) of the nose wheel steering (NWS) gearbox; or repetitive detailed
inspections for damage of the chrome on the bearing surface of the nose
landing gear (NLG) main fitting barrel; as applicable. For airplanes
with any discrepancy or damage, the original NPRM would have required
an additional inspection or corrective actions.
The original NPRM was prompted by a report from the Direction
G[eacute]n[eacute]rale de l'Aviation Civile (DGAC), which is the
airworthiness authority for France, of the failure of the NWS system on
a Model A340 airplane. Problems associated with this failure, if not
corrected, could result in incorrect operation or jamming of the NWS,
and reduced controllability of the airplane on the ground.

Actions Since Issuance of Previous Proposal

The original NPRM was intended to address the unsafe condition
identified in French airworthiness directives 2001-503(B) and 2001-
504(B). Since we issued that NPRM, the DGAC has cancelled those
airworthiness directives and issued new rulemaking on this subject to
add a terminating action and remove airplanes modified in production.

Explanation of New Service Information

Airbus has issued the following Airbus service bulletins:

Service Bulletins
----------------------------------------------------------------------------------------------------------------
Messier-Dowty service
Action Airbus service bulletin Airplane models bulletins referred to in
Airbus service bulletins
----------------------------------------------------------------------------------------------------------------
Repetitive inspections............ A330-32-3134, Revision 03, A330-200 and -300 Special Inspection
dated May 11, 2005, and series airplanes. Service Bulletins D23285-
Revision 04, dated April 32-037, Revision 2,
3, 2006. dated May 23, 2002; and
D23285-32-044, dated
January 12, 2004.
A340-32-4172, Revision 03, A340-200 and -300 Special Inspection
dated May 11, 2005, and series airplanes. Service Bulletins D23285-
Revision 04, dated April 32-037, Revision 2,
3, 2006. dated May 23, 2002; and
D23285-32-044, dated
January 12, 2004.

[[Page 44939]]

Modification...................... A330-32-3164, dated June A330-200 and -300 Service Bulletin D23285-
27, 2003, and Revision series airplanes. 32-042, dated June 19,
01, dated March 21, 2006. 2003.
A340-32-4204, dated June A340-200 and -300 Service Bulletin D23285-
27, 2003, and Revision series airplanes. 32-042, dated June 19,
01, dated March 21, 2006. 2003.
Modification...................... A330-32-3192, dated A330-200 and -300 Service Bulletin D23581-
December 8, 2005. series airplanes. 32-047, dated December
1, 2005.
A340-32-4227, dated A340-200 and -300 Service Bulletin D23581-
December 8, 2005. series airplanes. 32-047, dated December
1, 2005.
----------------------------------------------------------------------------------------------------------------

Service Bulletins A330-32-3134 and A340-32-4172, both Revision 02,
both dated August 8, 2003, were described in the original NPRM.
Revisions 03 and 04 of these service bulletins provides minor changes
only; the procedures remain essentially unchanged.
Service Bulletins A330-32-3164 and A340-32-4204 describe an
inspection to identify the suffix number on the NLG leg assembly. For
affected leg assemblies, the service bulletins also describe procedures
for a modification that will improve the sealing between the RVDT
gearboxes and the NLG steering collar to help prevent contamination of
the RVDT gearboxes and the NLG main fitting. The modification involves
replacing the RVDT drive gear ring and the housing of the NLG steering
gear ring.
Service Bulletins A330-32-3192 and A340-32-4227 describe an
inspection to identify the suffix number on the NLG leg assemblies. For
affected leg assemblies, the service bulletins also describe procedures
for an NLG modification that will reduce wear and damage of the
reinforced NLG steering collar and NLG main fitting. The modification
involves adding two grease points and new bushes with revised grease
paths, which will allow better grease distribution into the steering
collar assembly. The modification also involves increasing the internal
diameter tolerances of the steering collar, which will reduce the risk
of contact between the steering collar and the main fitting at low
temperature.
Accomplishing both modifications described in Airbus Service
Bulletins A330-32-3164, A340-32-4204, A330-32-3192, and A340-32-4227,
as applicable, eliminates the need for the repetitive inspections.
Accomplishing the actions specified in the service information
described above is intended to adequately address the unsafe condition.
The DGAC mandated the service information and issued French
airworthiness directives F-2005-209 and F-2005-210, both dated December
21, 2005, to ensure the continued airworthiness of these airplanes in
France.

FAA's Determination

In light of the DGAC's new rulemaking and the corresponding revised
service bulletins described above, we have revised the supplemental
NPRM to refer to the new information.

Comments

Interested persons have been afforded an opportunity to participate
in the making of this amendment. Due consideration has been given to
the comments received.

Support for the Proposed AD

One commenter, U.S. Airways, supports the original NPRM and the
flexibility it offers in allowing operators the option of either
inspecting the bearing surface or analyzing a grease sample. The
commenter observes that this flexibility will allow operators to choose
the inspection method and interval that best suit their maintenance
schedules.

Request To Clarify Inspection Conditions

Paragraphs (b), (c), and (d) of the original NPRM specify
inspection requirements and compliance times based on accomplishment of
Airbus Modification 51381. The procedures for the modification are
described in Airbus Service Bulletins A330-32-3164 and A340-32-4204.
One commenter, Airbus, suggests that identifying those service
bulletins in the AD would help operators define the configuration of
their airplanes to determine the relevant inspections.
We infer that Airbus is requesting that we exclude from the AD
applicability those airplanes on which the modification service
bulletins have been accomplished in service. We disagree with the
request. Although the applicability of French airworthiness directives
F-2005-209 and F-2005-210 excludes airplanes on which Airbus Service
Bulletins A340-32-4204 and A330-32-3164 (as well as A340-32-4227 and
A330-32-3192) were done in service, the applicability of this
supplemental NPRM does not exclude those airplanes. This supplemental
NPRM would instead require the applicable modification(s) for airplanes
with affected NLG leg assemblies, as specified in those service
bulletins. This requirement would ensure that the applicable actions
specified in the service bulletins and proposed in this supplemental
NPRM are accomplished for all affected airplanes.

Request To Revise Inspection Requirement for Certain Conditions

Paragraph (d)(1) of the original NPRM specifies detailed
inspections for discrepancies of the grease and gear teeth. One
commenter, Airbus, states that operators cannot do a detailed
inspection, as that term is defined in the original NPRM, of the grease
because the associated service information instead specifies that the
grease sample be sent to a laboratory for analysis. (This procedure is
described in the secondary service bulletin, Messier-Dowty Special
Inspection Service Bulletin D23285-32-037, for airplanes without Airbus
Modification 51381 installed in production.) The commenter requests
that we revise paragraph (d)(1) of the original NPRM to require a
detailed inspection only of the gear teeth, which would be in line with
the wording and instructions of the applicable service bulletins.
Another commenter, Northwest Airlines, requests that we revise the
original NPRM to clarify that it would require only a detailed
inspection --not a lab analysis--of the grease.
We partially agree. We agree that the inspection of the grease and
the inspection of the gear teeth are different types of actions. And we
agree with Airbus that a detailed inspection of the grease is not the
appropriate terminology. But paragraph 2.B. of the Accomplishment
Instructions of Messier-Dowty Special Inspection Service Bulletin
D23285-32-037

[[Page 44940]]

specifies a grease ``inspection,'' which involves an analysis of the
grease by sending grease samples to a lab for inspection and
determination of further actions. We have revised the proposed
requirement (paragraph (a)(1) in this supplemental NPRM) to distinguish
an ``inspection'' of the grease (sending the grease to a laboratory for
analysis) from a ``detailed inspection'' of the gear teeth. We disagree
with Northwest Airlines' request to clarify that only a detailed
inspection is required. As previously discussed, the AD requires two
separate actions: A detailed inspection of the gear teeth and an
inspection of the grease. The grease inspection specified in the
Accomplishment Instructions involves analysis of the grease sample
either by Messier-Dowty or another lab. We have not changed the final
rule regarding this issue.

Request To Cite Latest Service Information

One commenter, Northwest Airlines, requests that we revise the
original NPRM to refer to the latest revision of Messier-Dowty Special
Inspection Service Bulletin D23285-32-037, which is Revision 2, dated
May 23, 2002.
As revised, the service bulletin provides for the grease analysis
to be done at a lab chosen by the operator; however, a reporting form
with results must be returned to Messier-Dowty. Likewise, this
supplemental NPRM would provide for the option that the grease analysis
be done at a lab chosen by the operator with the results to be
evaluated by Messier-Dowty. Note 2 in this supplemental NPRM refers to
Revision 2 of the service bulletin.

Request To Define Allowable Grease Particle Content

One commenter, U.S. Airways, which operates Model A330 airplanes,
notes that there are no allowable limits for the grease particle
content provided in Airbus Service Bulletin A330-32-3134 or Messier-
Dowty Special Inspection Service Bulletin D23285-32-037. The original
NPRM would allow only Messier-Dowty to do the grease sample analysis.
The commenter requests that we revise the original NPRM to define
acceptable grease particle content and permit operators to use
alternative lab facilities to analyze the grease.
We partially agree with the requests. As stated previously,
Messier-Dowty Special Inspection Service Bulletin D23285-32-037 was
revised to provide for the grease analysis to be done at a lab chosen
by the operator. However, the criteria for acceptable grease particle
content are complex and not appropriate to include in this supplemental
NPRM. The grease analysis process includes establishing reference
spectra for new grease samples, establishing the spectra for each
grease sample taken, comparing the sample spectra to the reference, and
identifying polluting agents. The allowable pollutant constituents,
their allowable size and weights, and specification of the acceptable
ranges for constituent concentrations of the grease when compared to
the reference would greatly increase the complexity of this
supplemental NPRM. Therefore, we have determined that it is necessary
for operators to send the results to Messier-Dowty for evaluation.

Request To Revise Compliance Time for Analysis

As stated previously, Messier-Dowty Special Inspection Service
Bulletin D23285-32-037 specifies sending grease samples to Messier-
Dowty for analysis. If the grease sample analysis indicates any
discrepancy, paragraph (d)(1) of the original NPRM would require a
detailed inspection of the bearing surface within 3 months. One
commenter, U.S. Airways, questions whether the 3-month period should be
counted from the day the grease sample was taken or the day the results
were provided to the operator. The commenter requests that we revise
the original NPRM to specifically require the bearing surface
inspection within 3 months after Messier-Dowty advises operators of
discrepant results. According to the commenter, this suggested
compliance time would avoid problems associated with the possible lag
time between the time the operator sends a sample to the manufacturer
and the time the operator receives the results. If an extended time is
required for the analysis, operators may be required to inspect the
bearing surface without adequate planning time.
We do not agree with the request. We have determined that the
bearing surface must be inspected within 3 months after the initial
inspections of the grease and teeth. However, as previously stated,
operators have their option of laboratories for the grease analysis,
which could effectively lessen the impact on Messier-Dowty and decrease
the lag time between submitting samples and receiving results. In
addition, operators may request an extension of this time, in
accordance with paragraph (j) of this supplemental NPRM, if data are
supplied that will ensure the continued operational safety of the fleet
pending receipt of the lab analysis. We have not changed this proposed
requirement (paragraph (a)(1) in this supplemental NPRM).

Request To Clarify Inspection Requirements

One commenter, Airbus, considers that paragraph (e) of the original
NPRM could be interpreted as requiring the same type of inspection at
each interval. The commenter notes that Airbus Service Bulletins A330-
32-3134 and A340-32-4172 offer operators the option of inspecting
either the grease and gear teeth or the chrome on the bearing surface
of the NLG main fitting barrel under the NWS rotating sleeve at the
next inspection, within the applicable compliance times. The commenter
requests that we clarify the repetitive inspection requirement.
We agree that clarification is necessary. For each subsequent
repetitive inspection, operators have the option of doing either
inspection--regardless of the most recent inspection type performed,
provided subsequent inspections are done within the specified
intervals. The revisions in paragraph (c) in this supplemental NPRM are
intended to clarify this issue.

Request To Clarify Inspection Compliance Time

One commenter, Northwest Airlines, requests that we clarify the
compliance times for the initial inspection in the original NPRM. The
commenter suggests the following language: ``If the NLG is more than 5
years old (since new or overhauled), accomplish the inspection within
700 flight hours of the effective date of the AD.'' The commenter
states that this will agree with Airbus Service Bulletin A330-32-3134.
We do not agree. The commenter's requested change would allow
additional time for some airplanes. We have determined that the
compliance times, as proposed, will ensure an acceptable level of
safety. We have not changed this supplemental NPRM regarding this
issue.

Request To Revise Cost Estimate

The Cost Impact section of the original NPRM states that the chrome
inspection (on the bearing surface under the rotating sleeve) would
take about 2 work hours, and the grease and gear teeth inspection (on
the RVDT ring) would take about 8 work hours. One commenter, Northwest
Airlines, states that these estimates do not agree with those specified
in the service information:
For the chrome inspection, Airbus Service Bulletin A330-
32-3134 specifies 17 work hours to inspect, including 9 hours to
prepare, test, and close up; and Messier-Dowty Service Bulletin D23285-
32-037 specifies 8

[[Page 44941]]

work hours to inspect the bearing surface.
For the grease inspection, Airbus Service Bulletin A330-
32-3134 (and A340-32-4172) specifies 10 work hours to inspect,
including 8 hours to prepare, test, and close up; and Messier-Dowty
Service Bulletin D23285-32-037 specifies 2 work hours to inspect the
grease and gear teeth.
The commenter states that the differences between the work hours
for actual and incidental tasks will significantly affect the planning
and scheduling of these inspection tasks.
We partially agree with the commenter's interepretation of the
service bulletin labor estimates. We have included work hours for post-
inspection test preparation and tests. The cost estimates provided in
the original NPRM generally reflect only the direct costs of the
specific required actions based on the best data available from the
manufacturer. We recognize that operators may incur incidental costs
(such as the time for planning, access and close, and associated
administrative actions) in addition to the direct costs. The cost
analysis in ADs, however, typically does not include incidental costs.
The compliance times in this supplemental NPRM should allow ample time
for operators to do the required actions at the same time as scheduled
major airplane inspection and maintenance activities, which would
reduce the additional time and costs associated with special
scheduling.

Additional Changes to Original NPRM

1. We have revised the applicability of the original NPRM to
identify model designations as published in the most recent type
certificate data sheet for the affected models. Although Model A330-302
and -303 airplanes have not yet been type certificated, FAA approval of
these models is in process. We have changed the applicability in this
supplemental NPRM to more closely parallel the effectivity section of
the French airworthiness directives; the revised reference to Model
A330 airplanes includes Model A330-302 and -303 airplanes.
2. We revised the inspection requirements to distinguish airplanes
by configuration. Paragraphs (a) through (c) in this supplemental NPRM
apply to airplanes without Airbus Modification 51381. Paragraph (d) in
this supplemental NPRM applies to airplanes with the modification.
3. We have revised this action to clarify the appropriate procedure
for notifying the principal inspector before using any approved AMOC on
any airplane to which the AMOC applies.
4. After we issued the original NPRM, we reviewed the figures we
have used over the past several years to calculate AD costs to
operators. To account for various inflationary costs in the airline
industry, we find it necessary to increase the labor rate used in these
calculations from $65 per work hour to $80 per work hour. The cost
impact information, below, reflects this increase in the specified
hourly labor rate.

Conclusion

Since certain changes expand the scope of the originally proposed
rule, the FAA has determined that it is necessary to reopen the comment
period to provide additional opportunity for public comment.

Cost Impact

The following table provides the estimated costs for U.S. operators
to comply with this supplemental NPRM.

Estimated Costs
--------------------------------------------------------------------------------------------------------------------------------------------------------
Number of
Average U.S.-
Action Work hours labor rate Parts Cost per airplane registered Fleet cost
per hour airplanes
--------------------------------------------------------------------------------------------------------------------------------------------------------
RVDT inspection, per inspection cycle 6 $80 None.................... $480................... 11 $5,280.
Chrome inspection, per inspection 13 80 None.................... $1,040................. 15 15,600.
cycle.
Modification (Service Bulletin A330- 15 80 10,244 to $11,337....... $11,444 to $12,537..... 12 137,328 to $150,444.
32-3164 or A340-32-4204).
Rotating sleeve grease system 15 80 Unknown................. From $1,200............ 23 From $27,600.
modification (Service Bulletin A330-
32-3192 or A340-32-4227).
--------------------------------------------------------------------------------------------------------------------------------------------------------

Authority for This Rulemaking

Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, Section 106, describes the
authority of the FAA Administrator. Subtitle VII, Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701, ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.

Regulatory Impact

The regulations proposed herein would not have a substantial direct
effect on the States, on the relationship between the national
Government and the States, or on the distribution of power and
responsibilities among the various levels of government. Therefore, it
is determined that this proposal would not have federalism implications
under Executive Order 13132.
For the reasons discussed above, I certify that this proposed
regulation (1) is not a ``significant regulatory action'' under
Executive Order 12866; (2) is not a ``significant rule'' under the DOT
Regulatory Policies and Procedures (44 FR 11034, February 26, 1979);
and (3) if promulgated, will not have a significant economic impact,
positive or negative, on a substantial number of small entities under
the criteria of the Regulatory Flexibility Act. A copy of the draft
regulatory evaluation prepared for this action is contained in the
Rules Docket. A copy of it may be obtained by contacting the Rules
Docket at the location provided under the caption ADDRESSES.

List of Subjects in 14 CFR Part 39

Air transportation, Aircraft, Aviation safety, Safety.

The Proposed Amendment

Accordingly, pursuant to the authority delegated to me by the
Administrator, the Federal Aviation Administration proposes to amend
part

[[Page 44942]]

39 of the Federal Aviation Regulations (14 CFR part 39) as follows:

PART 39--AIRWORTHINESS DIRECTIVES

1. The authority citation for part 39 continues to read as follows:

Authority: 49 U.S.C. 106(g), 40113, 44701.

Sec. 39.13 [Amended]

2. Section 39.13 is amended by adding the following new
airworthiness directive:

Airbus: Docket 2001-NM-381-AD.

Applicability: The following airplanes, certificated in any
category, except those modified in production by both Airbus
Modifications 51381 and 53073:

Model A330-201, -202, -203, -223, and -243 airplanes
Model A330-301, -302, -303, -321, -322, -323, -341, -342, and -343
airplanes
Model A340-211, -212, and -213 airplanes
Model A340-311, -312, and -313 airplanes

Compliance: Required as indicated, unless accomplished
previously.
To prevent incorrect operation or jamming of the nose wheel
steering (NWS), which could cause reduced controllability of the
airplane on the ground, accomplish the following:

Inspections: Airplanes Without Modification 51381

(a) For airplanes that were not modified in production by Airbus
Modification 51381: Do the inspection specified in either paragraph
(a)(1) or (a)(2) of this AD, in accordance with the required service
bulletin identified in Table 1 of this AD, as applicable. The
required compliance time is specified in paragraph (b) of this AD.
(1) Inspect for discrepancies of the grease by sending it to a
laboratory for analysis, and do a detailed inspection for
discrepancies of the gear teeth of the radial variable differential
transducer (RVDT) driving ring and the gears in the RVDT gearboxes.
If there are no discrepancies (such as metallic particles in the
grease, abnormal wear of the gear teeth, or missing rubber sealant
at the mating face between the main fitting and the RVDT gearbox),
repeat the inspection as specified in paragraph (c) of this AD. If
there is any discrepancy, do the inspection in paragraph (a)(2) of
this AD within 3 months after the inspection specified in paragraph
(a)(1) of this AD.
(2) Do a detailed inspection for damage of the chrome on the
bearing surface of the nose landing gear (NLG) main fitting barrel
under the NWS rotating sleeve. If there is no damage (such as
flaking, corrosion, or blistering), repeat the inspection as
specified in paragraph (c) of this AD. If there is any damage,
before further flight, do the corrective action in paragraph (e) of
this AD.

Note 1: For the purposes of this AD, a detailed inspection is
defined as: ``An intensive visual examination of a specific
structural area, system, installation, or assembly to detect damage,
failure, or irregularity. Available lighting is normally
supplemented with a direct source of good lighting at intensity
deemed appropriate by the inspector. Inspection aids such as mirror,
magnifying lenses, etc., may be used. Surface cleaning and elaborate
access procedures may be required.''

Table 1.--Inspection Service Bulletins
----------------------------------------------------------------------------------------------------------------
Approved revision level
(for actions done
Airplane models Airbus service bulletin Required revision level before the effective
date of the AD)
----------------------------------------------------------------------------------------------------------------
A330-200 and A330-300 series A330-32-3134........... Revision 04, dated Original, dated
airplanes. April 3, 2006. September 11, 2001.
Revision 01, dated
November 29, 2001.
Revision 02, dated
August 8, 2003.
Revision 03, dated May
11, 2005.
A340-200 and A330-300 series A340-32-4172........... Revision 04, dated Original, dated
airplanes. April 3, 2006. September 11, 2001.
Revision 01, dated
November 29, 2001.
Revision 02, dated
August 8, 2003.
Revision 03, dated May
11, 2005.
----------------------------------------------------------------------------------------------------------------

(b) For airplanes identified in paragraph (a) of this AD: Do the
initial inspection specified in paragraph (a) of this AD at the
latest of the following times:
(1) Within 60 months after the date that the new NLG was
installed on the airplane.
(2) Within 60 months after the last major NLG overhaul
accomplished before the effective date of this AD.
(3) Within 700 flight hours after the effective date of this AD.
(c) For airplanes identified in paragraph (a) of this AD: Repeat
either inspection specified in paragraph (a)(1) or (a)(2) of this AD
at intervals not to exceed the applicable interval specified in
paragraph (c)(1) or (c)(2) of this AD, until the requirements of
paragraph (g) of this AD are done.
(1) If the most recent inspection was the inspection specified
in paragraph (a)(1) of this AD, then the next inspection must be
done within 8 months.
(2) If the most recent inspection was the inspection specified
in paragraph (a)(2) of this AD, then the next inspection must be
done within 18 months.

Repetitive Inspections: Airplanes With Modification 51381

(d) For airplanes modified in production by Airbus Modification
51381: Perform a detailed inspection for damage of the chrome on the
bearing surface of the nose landing gear (NLG) main fitting barrel
under the NWS rotating sleeve. Do the inspection at the later of the
times specified in paragraphs (d)(1) and (d)(2) of this AD in
accordance with the applicable required service bulletin identified
in Table 1 of this AD. Repeat the inspection thereafter at intervals
not to exceed 18 months, until the requirements of paragraph (g) of
this AD have been done.
(1) Within 60 months after the date that the new NLG was
installed on the airplane.
(2) Within 60 months after the last major NLG overhaul
accomplished before the effective date of this AD.

Follow-On Investigative and Corrective Actions

(e) For all airplanes: If any damage or discrepancy is found
during any inspection required by this AD, do the corrective action
before further flight in accordance with the applicable required
Airbus service bulletin identified in Table 1 of this AD, with the
following exceptions:
(1) If discrepancies are found during any inspection specified
in paragraph (a)(1) of this AD, the inspection in paragraph (a)(2)
of this AD is required within 3 months.
(2) Where the service bulletin recommends contacting Messier-
Dowty for appropriate action: Repair before further flight in
accordance with a method approved by either the Manager,
International Branch, ANM-116, FAA, Transport Airplane Directorate;
or the Direction Generale de l'Aviation Civile (DGAC) (or its
delegated agent).

Note 2: Airbus Service Bulletins A330-32-3134 and A340-32-4172
refer to Messier-

[[Page 44943]]

Dowty Special Inspection Service Bulletins D23285-32-037, Revision
2, dated May 23, 2002; and D23285-32-044, dated January 12, 2004; as
additional sources of service information for the inspections.

Credit for Prior Accomplishment

(f) Actions done before the effective date of this AD in
accordance with an applicable Approved Revision Level of the service
bulletin identified in Table 1 of this AD are acceptable for
compliance with the corresponding requirements of paragraphs (a),
(d), and (e) of this AD.

Modification

(g) For all airplanes: At the applicable time specified in
paragraph (g)(1) or (g)(2) of this AD, modify the NLG as specified
in Table 2 of this AD, as applicable.
(1) For NLGs overhauled before the effective date of this AD: At
the later of the times specified in paragraphs (g)(1)(i) and
(g)(1)(ii) of this AD:
(i) Within 60 months since the NLG was overhauled or 180 months
since the NLG was new, whichever occurs first.
(ii) Within 6 months after the effective date of this AD.
(2) For NLGs not overhauled before the effective date of this
AD: Within 120 months since the NLG was new, or within 6 months
after the effective date of this AD, whichever occurs later.

Table 2.--Modification
------------------------------------------------------------------------
Modify the NLG in accordance
For airplanes-- with--
------------------------------------------------------------------------
Without Airbus Modifications 51381 and Both Airbus Service Bulletins
53073 done in production. A330-32-3164, dated June 27,
2003, or Revision 1, dated
March 21, 2006; and A330-32-
3192, dated December 8, 2005;
Or both Airbus Service
Bulletins A340-32-4204, dated
June 27, 2003, or Revision 1,
dated March 21, 2006; and A340-
32-4227, dated December 8,
2005.
With Airbus Modification 51381 but not Airbus Service Bulletin A330-32-
Airbus Modification 53073 done in 3192, dated December 8, 2005;
production. or A340-32-4227, dated
December 8, 2005.
With Airbus Modification 53073 but not Airbus Service Bulletin A330-32-
Airbus Modification 51381 done in 3164, dated June 27, 2003, or
production. Revision 01, dated March 21,
2006; or A340-32-4204, dated
June 27, 2003, or Revision 01,
dated March 21, 2006.
------------------------------------------------------------------------

Terminating Action

(h) Accomplishment of both NLG modifications specified in
paragraph (g) of this AD terminates the repetitive inspection
requirements of this AD.

Note 3: Airbus Service Bulletins A330-32-3164 and A340-32-4204
refer to Messier-Dowty Service Bulletin D23285-32-042, dated June
19, 2003, as an additional source of service information for the
modification.

Note 4: Airbus Service Bulletins A330-32-3192 and A340-32-4227
refer to Messier-Dowty Service Bulletin D23581-32-047, dated
December 1, 2005, as an additional source of service information for
the modification.

Reporting

(i) Certain service bulletins specify to submit a report to the
manufacturer. This AD does not require a report, unless the grease
analysis required by paragraph (a)(1) of this AD is done at a lab
chosen by the operator, which requires the results to be evaluated
by Messier-Dowty.

Alternative Methods of Compliance

(j)(1) In accordance with 14 CFR 39.19, the Manager,
International Branch, ANM-116, is authorized to approve alternative
methods of compliance for this AD.
(2) Before using any AMOC approved in accordance with 14 CFR
39.19 on any airplane to which the AMOC applies, notify the
appropriate principal inspector in the FAA Flight Standards
Certificate Holding District Office.

Note 5: The subject of this AD is addressed in French
airworthiness directives F-2005-209 and F-2005-210, both dated
December 21, 2005.

Issued in Renton, Washington, on July 31, 2006.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. E6-12834 Filed 8-7-06; 8:45 am]
BILLING CODE 4910-13-P

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