Airworthiness Directives; Bombardier, Inc. Airplanes, 15655-15658 [2013-05597]

Download as PDF Federal Register / Vol. 78, No. 48 / Tuesday, March 12, 2013 / Proposed Rules willingness to bring all issues to the bargaining table in an attempt to reach a consensus, as opposed to keeping key issues in reserve. The second is a willingness to keep the issues at the table and not take them to other forums. Finally, good faith includes a willingness to move away from some of the positions often taken in a more traditional rulemaking process, and instead explore openly with other parties all ideas that may emerge from the working group’s discussions. E. Facilitator The facilitator will act as a neutral in the substantive development of the proposed standard. The facilitator’s role generally includes: • Impartially assisting the members of the working group in conducting discussions and negotiations; and • Impartially assisting in performing the duties of the Designated Federal Official under FACA. pmangrum on DSK3VPTVN1PROD with PROPOSALS F. Department Representative The DOE representative will be a full and active participant in the consensusbuilding negotiations. The Department’s representative will meet regularly with senior Department officials, briefing them on the negotiations and receiving their suggestions and advice so that he or she can effectively represent the Department’s views regarding the issues before the working group. DOE’s representative also will ensure that the entire spectrum of governmental interests affected by the rulemaking, including the Office of Management and Budget, the Attorney General, and other Departmental offices, are kept informed of the negotiations and encouraged to make their concerns known in a timely fashion. G. Working Group and Schedule After evaluating the comments submitted in response to this notice of intent and the requests for nominations, DOE will inform the members of the working group that they have been selected. DOE and ASRAC plan for the working group to have its first meeting in April 2013 and have determined a need for an update from the working group on negotiation efforts by Wednesday, June 26, 2013, and final recommendations to ASRAC by Friday, August 30, 2013. At the initial working group meeting, DOE and ASRAC representatives on the working group will advise working group members of administrative matters related to the functions of the working group, lay out the working group’s scope, and confirm deadlines. Given the outlined scope and VerDate Mar<15>2010 14:46 Mar 11, 2013 Jkt 229001 established deadlines, the working group will develop a work plan to accomplish the proposed objectives. While the negotiated rulemaking process is underway, DOE is committed to performing much of the same analysis as it would during a normal process and to providing information and technical support to the working group. IV. Nominations Requested DOE requests nominations of which parties should be included in a negotiation efforts of certification requirements of commercial HVAC, WH, and refrigeration equipment and suggestions of additional interests and/ or stakeholders that should be represented on the working group. Please include the nominee’s name, contact information, resume, biography, and any letters of support. Nominations must be submitted in electronic format via email to asrac@ee.doe.gov. V. Approval of the Office of the Secretary The Secretary of Energy has approved publication of today’s notice of proposed rulemaking. Issued in Washington, DC, on March 5, 2013. Kathleen B. Hogan, Deputy Assistant Secretary for Energy Efficiency and Renewable Energy. [FR Doc. 2013–05615 Filed 3–11–13; 8:45 am] BILLING CODE 6450–01–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–0594; Directorate Identifier 2012–NM–019–AD] RIN 2120–AA64 Airworthiness Directives; Bombardier, Inc. Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of comment period. AGENCY: We are revising an earlier proposed airworthiness directive (AD) for certain Bombardier, Inc. Model DHC–8–400, –401, and –402 airplanes. That NPRM proposed to require an inspection to determine if certain rudder feel trim units (RFTUs) are installed, an operational check for signs of seizure of affected parts, repetitive lubrication for certain RFTUs, and replacement of the RFTU if necessary. SUMMARY: PO 00000 Frm 00011 Fmt 4702 Sfmt 4702 15655 Installing replaced RFTUs with conformal bushings would terminate the repetitive lubrication requirements. That NPRM was prompted by reports of movement of the rudder pedals being impeded due to corrosion of the trunnion shaft of the RFTU. This action revises that NPRM by reducing compliance times, increasing compliance costs, expanding affected parts to include additional serial numbers and include those parts with a suffix ‘A,’ and adding the condition of rough movement to the operational check. We are proposing this AD to detect and correct any sign of rough movement or seizure of the trunnion shaft and its bushing, which could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes. DATES: We must receive comments on this proposed AD by April 26, 2013. ADDRESSES: You may send comments by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: (202) 493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375– 4000; fax 416–375–4539; email thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227– 1221. Examining the AD Docket You may examine the AD docket on the Internet at https:// www.regulations.gov; or in person at the Docket Operations office between 9 a.m. E:\FR\FM\12MRP1.SGM 12MRP1 15656 Federal Register / Vol. 78, No. 48 / Tuesday, March 12, 2013 / Proposed Rules and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Operations office (telephone (800) 647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE–171, FAA, New York Aircraft Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone (516) 228– 7318; fax (516) 794–5531. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposed AD. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA–2012–0594; Directorate Identifier 2012–NM–019–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD based on those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. pmangrum on DSK3VPTVN1PROD with PROPOSALS Discussion We proposed to amend 14 CFR part 39 with an earlier NPRM for the specified products, which was published in the Federal Register on June 12, 2012 (77 FR 34874). That earlier NPRM proposed to require actions intended to address the unsafe condition for certain Bombardier, Inc. Model DHC–8–400, –401, and –402 airplanes. Since that NPRM (77 FR 34874, June 12, 2012) was issued, we have determined that a reduction to the compliance times is needed in order to address the identified specified unsafe condition. We are reducing the compliance times for the inspection in paragraph (g) of this supplemental NPRM from within 600 flight hours or six months, whichever occurs first, to within 200 flight hours or two months, whichever occurs first after the effective date of this AD. We are reducing the compliance time for the replacement VerDate Mar<15>2010 14:46 Mar 11, 2013 Jkt 229001 specified in paragraph (h) of this supplemental NPRM from within 6,000 flight hours to within 5,000 flight hours or 3 years, whichever occurs first. We have also determined that it is necessary to increase the costs of compliance, expand the affected parts, and revise the operational check specified in the NPRM. The affected parts for the action specified in paragraphs (g)(1) and (g)(2) have been expanded in this supplemental NPRM to include additional serial numbers (S/N) 0008 through 0509 inclusive, and to include those parts with suffix ‘A.’ Also, the operational check specified in paragraph (g)(2) of this supplemental NPRM now includes an additional condition of ‘‘any sign of rough movement.’’ Since the NPRM (77 FR 34874, June 12, 2012) was issued, Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian Airworthiness Directive CF–2012–02R1, dated October 12, 2012 (referred to after this as Mandatory Continuing Airworthiness Information, or ‘‘the MCAI’’), to correct an unsafe condition for the specified products. The MCAI reduced compliance times, expanded the affected parts to include the new part serial numbers and parts with suffix ‘A,’ and added the condition of ‘‘rough movement’’ to the operational check. You may obtain further information by examining the MCAI in the AD docket. for RFTU (S/Ns) 0009 through 0388 inclusive. Horizon noted RFTUs modified by that service bulletin are identified by a suffix ‘B’ to the unit serial number. Horizon stated the addition of units with suffix ‘B’’ would allow operators that have taken actions to incorporate Parker Aerospace Service Bulletin 399500–27–003, dated April 19, 2012, suffix ‘B’ units into their fleet, to be in compliance with the NPRM and to keep operators from having to request an alternative means of compliance (AMOC) to keep suffix ‘B’ units in service once the final rule is issued. We partially agree with the commenter. This supplemental NPRM does allow installation of units with suffix ‘B.’ However, as stated previously, units with suffix ‘A,’ are now affected parts and this supplemental NPRM would not allow installations of units with suffix ‘A.’ We have changed paragraphs (g), (h), and (i) of this supplemental NPRM to include the addition of units with suffix ‘B.’ Comments We gave the public the opportunity to comment on the NPRM (77 FR 34874, June 12, 2012). The following presents the comments received on the NPRM and the FAA’s response to each comment. Request To Revise Paragraph (g)(2)(i) of the NPRM (77 FR 34874, June 12, 2012) Horizon requested that we revise paragraph (g)(2)(i) of the NPRM (77 FR 34874, June 12, 2012) to allow installing serviceable RFTUs and RFTUs having suffix ‘B.’ Horizon added that paragraph (g)(2)(i) of the NPRM requires ‘‘replacing the RFTU with a new RFTU.’’ Horizon stated that the word ‘new’ implies a zero-time unit that is new from the manufacturer, and that operators should not be required to purchase a new unit to meet the requirements of paragraph (g)(2)(i) of the NPRM when a serviceable RFTU outside the serial number range, or that has a serial number with a suffix ‘A,’ would address the unsafe condition. Horizon pointed out that requiring use of a new unit since it adds an additional financial cost that is unnecessary to address the unsafe condition. We agree. We have revised paragraph (g)(2)(i) of this supplemental NPRM to specify replacing RFTUs with new or serviceable RFTUs, which includes those with suffix ‘B.’ Request To Allow Additional Replacement Units Horizon Air (Horizon) requested that we add units with suffix ‘B,’ in addition to units with suffix ‘A,’ to the RFTUs allowed as replacement parts in paragraphs (g), (h), and (i) of the NPRM (77 FR 34874, June 12, 2012). Horizon stated that Parker Aerospace, which manufacturers RFTU part number (P/N) 399500–1007, has since issued Parker Aerospace Service Bulletin 399500–27– 003, dated April 19, 2012, which introduced an additional modification FAA’s Determination and Requirements of This Proposed AD This product has been approved by the aviation authority of another country, and is approved for operation in the United States. Pursuant to our bilateral agreement with the State of Design Authority, we have been notified of the unsafe condition described in the MCAI and service information referenced above. We are proposing this AD because we evaluated all pertinent information and determined an unsafe condition exists and is likely to exist or Relevant Service Information Bombardier has issued Service Bulletin 84–27–60, dated July 12, 2012. The actions described in this service information are intended to correct the unsafe condition identified in the MCAI. PO 00000 Frm 00012 Fmt 4702 Sfmt 4702 E:\FR\FM\12MRP1.SGM 12MRP1 Federal Register / Vol. 78, No. 48 / Tuesday, March 12, 2013 / Proposed Rules develop on other products of the same type design. Certain changes described above expand the scope of the earlier NPRM (77 FR 34874, June 12, 2012). As a result, we have determined that it is necessary to reopen the comment period to provide additional opportunity for the public to comment on this proposed AD. pmangrum on DSK3VPTVN1PROD with PROPOSALS Costs of Compliance Based on the service information, we estimate that this proposed AD would affect about 83 products of U.S. registry. We also estimate that it would take about 5 work-hours per product to comply with the basic requirements of this proposed AD. The average labor rate is $85 per work-hour. Required parts would cost about $0 per product. Where the service information lists required parts costs that are covered under warranty, we have assumed that there will be no charge for these parts. As we do not control warranty coverage for affected parties, some parties may incur costs higher than estimated here. Based on these figures, we estimate the cost of the proposed AD on U.S. operators to be $35,275, or $425 per product. In addition, we estimate that any necessary follow-on actions would take about 17 work-hours and require parts costing $0, for a cost of $1,445 per product. We have no way of determining the number of products that may need these actions. 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 Findings We determined that this proposed AD would not have federalism implications under Executive Order 13132. This VerDate Mar<15>2010 14:46 Mar 11, 2013 Jkt 229001 proposed AD 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. For the reasons discussed above, I certify 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); 3. Will not affect intrastate aviation in Alaska; and 4. 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. We prepared a regulatory evaluation of the estimated costs to comply with this proposed AD and placed it in the AD docket. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety. The Proposed Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA proposes to amend 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. The FAA amends § 39.13 by adding the following new AD: ■ Bombardier, Inc.: Docket No. FAA–2012– 0594; Directorate Identifier 2012–NM– 019–AD. (a) Comments Due Date We must receive comments by April 26, 2013. (b) Affected ADs None. (c) Applicability This AD applies to Bombardier, Inc. Model DHC–8–400, -401, and -402 airplanes; certificated in any category; serial numbers (S/N) 4001, 4003 and subsequent, equipped with rudder feel trim unit (RFTU) part number (P/N) 399500–1007. (d) Subject Air Transport Association (ATA) of America Code 27: Flight Controls. PO 00000 Frm 00013 Fmt 4702 Sfmt 4702 15657 (e) Reason This AD was prompted by reports of movement of the rudder pedals being impeded due to corrosion of the trunnion shaft of the RFTU. We are issuing this AD to detect and correct any sign of rough movement or seizure of the trunnion shaft and its bushing, which could cause a rudder control jam or a large and rapid alternating rudder input leading to a structural failure of the vertical fin. (f) Compliance You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done. (g) Inspection, Replacement, and Lubrication Within 200 flight hours or two months after the effective date of this AD whichever occurs first: Inspect the RTFU to determine whether the serial number is in the range from S/N 0008 through 0509 inclusive without a suffix ‘B,’ in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. A review of airplane maintenance records is acceptable in lieu of this inspection if the serial number of the RFTU can be conclusively determined from that review. (1) If the RFTU’s serial number is not in the range from S/N 0008 through 0509 inclusive, or if the serial number has a suffix ‘B,’ no further action is required for this paragraph. (2) If the RFTU’s serial number is in the range from (S/N) 0008 through 0509 inclusive, including those with a suffix ‘A,’ but not including those with suffix ‘B’: Before further flight, perform an operational check of the RFTU for any sign of rough movement or seizure of the trunnion or center shaft, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. (i) If rough movement or seizure of the RFTU trunnion or center shaft is found: Before further flight, replace the RFTU with a new or serviceable RFTU, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. (ii) If no rough movement or seizure of the RFTU trunnion or center shaft is found: Before further flight, lubricate the RFTU, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. Repeat the lubrication of the RFTU at intervals not to exceed 600 flight hours or 3 months, whichever occurs first, until the RFTU is replaced with a unit that has a serial number outside the affected range or a serial number with a suffix ‘B.’ (h) Replacement For airplanes having an RFTU identified in paragraph (g)(2) of this AD: Except as required by paragraph (g)(2)(i) of this AD, within 5,000 flight hours or 3 years after the effective date of this AD, whichever occurs first, replace all affected RFTUs with units that have a serial number outside the range from S/Ns 0008 through 0509 inclusive, or E:\FR\FM\12MRP1.SGM 12MRP1 15658 Federal Register / Vol. 78, No. 48 / Tuesday, March 12, 2013 / Proposed Rules that have a serial number with a suffix ‘B,’ in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84–27–60, dated July 12, 2012. DEPARTMENT OF TRANSPORTATION (i) Parts Installation Prohibition 14 CFR Part 39 As of the effective date of this AD, no person may install an RFTU P/N 399500– 1007 with a serial number from (S/N) 0008 through 0509 inclusive, including serial numbers with suffix ‘A,’ on any airplane, except RFTUs that have a serial number with suffix ‘B,’ may be installed. [Docket No. FAA–2013–0206; Directorate Identifier 2012–NM–068–AD] (j) Other FAA AD Provisions AGENCY: The following provisions also apply to this AD: (1) Alternative Methods of Compliance (AMOCs): The Manager, New York Aircraft Certification Office (ACO), ANE–170, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the ACO, send it to ATTN: Program Manager, Continuing Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 410, Westbury, New York 11590; telephone 516–228–7300; fax 516– 794–5531. Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/ certificate holding district office. The AMOC approval letter must specifically reference this AD. (2) Airworthy Product: For any requirement in this AD to obtain corrective actions from a manufacturer or other source, use these actions if they are FAA-approved. Corrective actions are considered FAAapproved if they are approved by the State of Design Authority (or their delegated agent). You are required to assure the product is airworthy before it is returned to service. pmangrum on DSK3VPTVN1PROD with PROPOSALS (k) Related Information (1) Refer to MCAI Canadian Airworthiness Directive CF–2012–02R1, dated October 12, 2012; and Bombardier Service Bulletin 84– 27–60, dated July 12, 2012; for related information. (2) For service information identified in this AD, contact Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416–375–4000; fax 416–375–4539; email thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW., Renton, Washington. For information on the availability of this material at the FAA, call 425–227–1221. Issued in Renton, Washington, on February 28, 2013. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 2013–05597 Filed 3–11–13; 8:45 am] BILLING CODE 4910–13–P VerDate Mar<15>2010 14:46 Mar 11, 2013 Jkt 229001 Federal Aviation Administration RIN 2120–AA64 Examining the AD Docket Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 727 airplanes. This proposed AD was prompted by reports of spanwise cracks and corrosion in the wing center box upper skin and rear spar upper chord between left buttock line (LBL) 70.50 and right buttock line (RBL) 70.50 at body station (STA) 870. This proposed AD would require repetitive inspections of the wing center box for cracking around certain fastener rows on the rear spar upper chord horizontal flange; for certain airplanes, repetitive inspections for cracking of the rear spar upper chord radius; for certain other airplanes, repetitive inspections for damage, cracking, and corrosion of the pressure seal; and repair if necessary. We are proposing this AD to detect and correct cracking and corrosion of the upper skin and rear spar upper chord of the wing center box, which could result in loss of the airplane wing and consequent loss of control of the airplane. DATES: We must receive comments on this proposed AD by April 26, 2013. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: • Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments. • Fax: 202–493–2251. • Mail: U.S. Department of Transportation, Docket Operations, M– 30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. • Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC 2H–65, Seattle, WA 98124–2207; telephone 206–544–5000, extension 1; SUMMARY: PO 00000 Frm 00014 Fmt 4702 fax 206–766–5680; Internet https:// www.myboeingfleet.com. You may review copies of the referenced service information at the FAA, Transport Airplane Directorate, 1601 Lind Ave SW., Renton, WA. For information on the availability of this material at the FAA, call 425–227–1221. Sfmt 4702 You may examine the AD docket on the Internet at https:// www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this proposed AD, the regulatory evaluation, any comments received, and other information. The street address for the Docket Office (phone: 800–647–5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. FOR FURTHER INFORMATION CONTACT: Berhane Alazar, Aerospace Engineer, Airframe Branch, ANM–120S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW., Renton, WA 98057–3356; phone: (425) 917–6577; fax: (425) 917–6590; email: berhane.alazar@faa.gov. SUPPLEMENTARY INFORMATION: Comments Invited We invite you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under the ADDRESSES section. Include ‘‘Docket No. FAA– 2013–0206; Directorate Identifier 2012– NM–068–AD’’ at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing date and may amend this proposed AD because of those comments. We will post all comments we receive, without change, to https:// www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this proposed AD. Discussion We have received reports of spanwise cracks and corrosion in the wing center box upper skin and rear spar upper chord between LBL 70.50 and RBL 70.50 at STA 870. The crack sizes ranged from 0.125 inches to 12 inches. The airplanes had accumulated between 31,679 and 61,359 total flight hours and between 17,754 and 58,796 total flight E:\FR\FM\12MRP1.SGM 12MRP1

Agencies

[Federal Register Volume 78, Number 48 (Tuesday, March 12, 2013)]
[Proposed Rules]
[Pages 15655-15658]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-05597]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0594; Directorate Identifier 2012-NM-019-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

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

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

SUMMARY: We are revising an earlier proposed airworthiness directive 
(AD) for certain Bombardier, Inc. Model DHC-8-400, -401, and -402 
airplanes. That NPRM proposed to require an inspection to determine if 
certain rudder feel trim units (RFTUs) are installed, an operational 
check for signs of seizure of affected parts, repetitive lubrication 
for certain RFTUs, and replacement of the RFTU if necessary. Installing 
replaced RFTUs with conformal bushings would terminate the repetitive 
lubrication requirements. That NPRM was prompted by reports of movement 
of the rudder pedals being impeded due to corrosion of the trunnion 
shaft of the RFTU. This action revises that NPRM by reducing compliance 
times, increasing compliance costs, expanding affected parts to include 
additional serial numbers and include those parts with a suffix `A,' 
and adding the condition of rough movement to the operational check. We 
are proposing this AD to detect and correct any sign of rough movement 
or seizure of the trunnion shaft and its bushing, which could cause a 
rudder control jam or a large and rapid alternating rudder input 
leading to a structural failure of the vertical fin. Since these 
actions impose an additional burden over that proposed in the NPRM, we 
are reopening the comment period to allow the public the chance to 
comment on these proposed changes.

DATES: We must receive comments on this proposed AD by April 26, 2013.

ADDRESSES: You may send comments by any of the following methods:
     Federal eRulemaking Portal: Go to https://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: (202) 493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC 20590.
     Hand Delivery: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE., Washington, DC, between 9 a.m. and 5 p.m., Monday 
through Friday, except Federal holidays.
    For service information identified in this proposed AD, contact 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, 
Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000; fax 416-375-
4539; email thd.qseries@aero.bombardier.com; Internet https://www.bombardier.com. You may review copies of the referenced service 
information at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221.

Examining the AD Docket

    You may examine the AD docket on the Internet at https://www.regulations.gov; or in person at the Docket Operations office 
between 9 a.m.

[[Page 15656]]

and 5 p.m., Monday through Friday, except Federal holidays. The AD 
docket contains this proposed AD, the regulatory evaluation, any 
comments received, and other information. The street address for the 
Docket Operations office (telephone (800) 647-5527) is in the ADDRESSES 
section. Comments will be available in the AD docket shortly after 
receipt.

FOR FURTHER INFORMATION CONTACT: Cesar Gomez, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office, 1600 Stewart Avenue, Suite 410, Westbury, New 
York 11590; telephone (516) 228-7318; fax (516) 794-5531.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposed AD. Send your comments to an address 
listed under the ADDRESSES section. Include ``Docket No. FAA-2012-0594; 
Directorate Identifier 2012-NM-019-AD'' at the beginning of your 
comments. We specifically invite comments on the overall regulatory, 
economic, environmental, and energy aspects of this proposed AD. We 
will consider all comments received by the closing date and may amend 
this proposed AD based on those comments.
    We will post all comments we receive, without change, to https://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We proposed to amend 14 CFR part 39 with an earlier NPRM for the 
specified products, which was published in the Federal Register on June 
12, 2012 (77 FR 34874). That earlier NPRM proposed to require actions 
intended to address the unsafe condition for certain Bombardier, Inc. 
Model DHC-8-400, -401, and -402 airplanes.
    Since that NPRM (77 FR 34874, June 12, 2012) was issued, we have 
determined that a reduction to the compliance times is needed in order 
to address the identified specified unsafe condition. We are reducing 
the compliance times for the inspection in paragraph (g) of this 
supplemental NPRM from within 600 flight hours or six months, whichever 
occurs first, to within 200 flight hours or two months, whichever 
occurs first after the effective date of this AD. We are reducing the 
compliance time for the replacement specified in paragraph (h) of this 
supplemental NPRM from within 6,000 flight hours to within 5,000 flight 
hours or 3 years, whichever occurs first. We have also determined that 
it is necessary to increase the costs of compliance, expand the 
affected parts, and revise the operational check specified in the NPRM. 
The affected parts for the action specified in paragraphs (g)(1) and 
(g)(2) have been expanded in this supplemental NPRM to include 
additional serial numbers (S/N) 0008 through 0509 inclusive, and to 
include those parts with suffix `A.' Also, the operational check 
specified in paragraph (g)(2) of this supplemental NPRM now includes an 
additional condition of ``any sign of rough movement.''
    Since the NPRM (77 FR 34874, June 12, 2012) was issued, Transport 
Canada Civil Aviation (TCCA), which is the aviation authority for 
Canada, has issued Canadian Airworthiness Directive CF-2012-02R1, dated 
October 12, 2012 (referred to after this as Mandatory Continuing 
Airworthiness Information, or ``the MCAI''), to correct an unsafe 
condition for the specified products. The MCAI reduced compliance 
times, expanded the affected parts to include the new part serial 
numbers and parts with suffix `A,' and added the condition of ``rough 
movement'' to the operational check. You may obtain further information 
by examining the MCAI in the AD docket.

Relevant Service Information

    Bombardier has issued Service Bulletin 84-27-60, dated July 12, 
2012. The actions described in this service information are intended to 
correct the unsafe condition identified in the MCAI.

Comments

    We gave the public the opportunity to comment on the NPRM (77 FR 
34874, June 12, 2012). The following presents the comments received on 
the NPRM and the FAA's response to each comment.

Request To Allow Additional Replacement Units

    Horizon Air (Horizon) requested that we add units with suffix `B,' 
in addition to units with suffix `A,' to the RFTUs allowed as 
replacement parts in paragraphs (g), (h), and (i) of the NPRM (77 FR 
34874, June 12, 2012). Horizon stated that Parker Aerospace, which 
manufacturers RFTU part number (P/N) 399500-1007, has since issued 
Parker Aerospace Service Bulletin 399500-27-003, dated April 19, 2012, 
which introduced an additional modification for RFTU (S/Ns) 0009 
through 0388 inclusive. Horizon noted RFTUs modified by that service 
bulletin are identified by a suffix `B' to the unit serial number. 
Horizon stated the addition of units with suffix `B'' would allow 
operators that have taken actions to incorporate Parker Aerospace 
Service Bulletin 399500-27-003, dated April 19, 2012, suffix `B' units 
into their fleet, to be in compliance with the NPRM and to keep 
operators from having to request an alternative means of compliance 
(AMOC) to keep suffix `B' units in service once the final rule is 
issued.
    We partially agree with the commenter. This supplemental NPRM does 
allow installation of units with suffix `B.' However, as stated 
previously, units with suffix `A,' are now affected parts and this 
supplemental NPRM would not allow installations of units with suffix 
`A.' We have changed paragraphs (g), (h), and (i) of this supplemental 
NPRM to include the addition of units with suffix `B.'

Request To Revise Paragraph (g)(2)(i) of the NPRM (77 FR 34874, June 
12, 2012)

    Horizon requested that we revise paragraph (g)(2)(i) of the NPRM 
(77 FR 34874, June 12, 2012) to allow installing serviceable RFTUs and 
RFTUs having suffix `B.' Horizon added that paragraph (g)(2)(i) of the 
NPRM requires ``replacing the RFTU with a new RFTU.'' Horizon stated 
that the word `new' implies a zero-time unit that is new from the 
manufacturer, and that operators should not be required to purchase a 
new unit to meet the requirements of paragraph (g)(2)(i) of the NPRM 
when a serviceable RFTU outside the serial number range, or that has a 
serial number with a suffix `A,' would address the unsafe condition. 
Horizon pointed out that requiring use of a new unit since it adds an 
additional financial cost that is unnecessary to address the unsafe 
condition.
    We agree. We have revised paragraph (g)(2)(i) of this supplemental 
NPRM to specify replacing RFTUs with new or serviceable RFTUs, which 
includes those with suffix `B.'

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or

[[Page 15657]]

develop on other products of the same type design.
    Certain changes described above expand the scope of the earlier 
NPRM (77 FR 34874, June 12, 2012). As a result, we have determined that 
it is necessary to reopen the comment period to provide additional 
opportunity for the public to comment on this proposed AD.

Costs of Compliance

    Based on the service information, we estimate that this proposed AD 
would affect about 83 products of U.S. registry. We also estimate that 
it would take about 5 work-hours per product to comply with the basic 
requirements of this proposed AD. The average labor rate is $85 per 
work-hour. Required parts would cost about $0 per product. Where the 
service information lists required parts costs that are covered under 
warranty, we have assumed that there will be no charge for these parts. 
As we do not control warranty coverage for affected parties, some 
parties may incur costs higher than estimated here. Based on these 
figures, we estimate the cost of the proposed AD on U.S. operators to 
be $35,275, or $425 per product.
    In addition, we estimate that any necessary follow-on actions would 
take about 17 work-hours and require parts costing $0, for a cost of 
$1,445 per product. We have no way of determining the number of 
products that may need these actions.

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 Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD 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.
    For the reasons discussed above, I certify 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);
    3. Will not affect intrastate aviation in Alaska; and
    4. 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.
    We prepared a regulatory evaluation of the estimated costs to 
comply with this proposed AD and placed it in the AD docket.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
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]

0
2. The FAA amends Sec.  39.13 by adding the following new AD:

Bombardier, Inc.: Docket No. FAA-2012-0594; Directorate Identifier 
2012-NM-019-AD.

(a) Comments Due Date

    We must receive comments by April 26, 2013.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -
402 airplanes; certificated in any category; serial numbers (S/N) 
4001, 4003 and subsequent, equipped with rudder feel trim unit 
(RFTU) part number (P/N) 399500-1007.

(d) Subject

    Air Transport Association (ATA) of America Code 27: Flight 
Controls.

(e) Reason

    This AD was prompted by reports of movement of the rudder pedals 
being impeded due to corrosion of the trunnion shaft of the RFTU. We 
are issuing this AD to detect and correct any sign of rough movement 
or seizure of the trunnion shaft and its bushing, which could cause 
a rudder control jam or a large and rapid alternating rudder input 
leading to a structural failure of the vertical fin.

(f) Compliance

    You are responsible for having the actions required by this AD 
performed within the compliance times specified, unless the actions 
have already been done.

(g) Inspection, Replacement, and Lubrication

    Within 200 flight hours or two months after the effective date 
of this AD whichever occurs first: Inspect the RTFU to determine 
whether the serial number is in the range from S/N 0008 through 0509 
inclusive without a suffix `B,' in accordance with the 
Accomplishment Instructions of Bombardier Service Bulletin 84-27-60, 
dated July 12, 2012. A review of airplane maintenance records is 
acceptable in lieu of this inspection if the serial number of the 
RFTU can be conclusively determined from that review.
    (1) If the RFTU's serial number is not in the range from S/N 
0008 through 0509 inclusive, or if the serial number has a suffix 
`B,' no further action is required for this paragraph.
    (2) If the RFTU's serial number is in the range from (S/N) 0008 
through 0509 inclusive, including those with a suffix `A,' but not 
including those with suffix `B': Before further flight, perform an 
operational check of the RFTU for any sign of rough movement or 
seizure of the trunnion or center shaft, in accordance with the 
Accomplishment Instructions of Bombardier Service Bulletin 84-27-60, 
dated July 12, 2012.
    (i) If rough movement or seizure of the RFTU trunnion or center 
shaft is found: Before further flight, replace the RFTU with a new 
or serviceable RFTU, in accordance with the Accomplishment 
Instructions of Bombardier Service Bulletin 84-27-60, dated July 12, 
2012.
    (ii) If no rough movement or seizure of the RFTU trunnion or 
center shaft is found: Before further flight, lubricate the RFTU, in 
accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 84-27-60, dated July 12, 2012. Repeat the 
lubrication of the RFTU at intervals not to exceed 600 flight hours 
or 3 months, whichever occurs first, until the RFTU is replaced with 
a unit that has a serial number outside the affected range or a 
serial number with a suffix `B.'

(h) Replacement

    For airplanes having an RFTU identified in paragraph (g)(2) of 
this AD: Except as required by paragraph (g)(2)(i) of this AD, 
within 5,000 flight hours or 3 years after the effective date of 
this AD, whichever occurs first, replace all affected RFTUs with 
units that have a serial number outside the range from S/Ns 0008 
through 0509 inclusive, or

[[Page 15658]]

that have a serial number with a suffix `B,' in accordance with the 
Accomplishment Instructions of Bombardier Service Bulletin 84-27-60, 
dated July 12, 2012.

(i) Parts Installation Prohibition

    As of the effective date of this AD, no person may install an 
RFTU P/N 399500-1007 with a serial number from (S/N) 0008 through 
0509 inclusive, including serial numbers with suffix `A,' on any 
airplane, except RFTUs that have a serial number with suffix `B,' 
may be installed.

(j) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office (ACO), ANE-170, FAA, has the 
authority to approve AMOCs for this AD, if requested using the 
procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, 
send your request to your principal inspector or local Flight 
Standards District Office, as appropriate. If sending information 
directly to the ACO, send it to ATTN: Program Manager, Continuing 
Operational Safety, FAA, New York ACO, 1600 Stewart Avenue, Suite 
410, Westbury, New York 11590; telephone 516-228-7300; fax 516-794-
5531. Before using any approved AMOC, notify your appropriate 
principal inspector, or lacking a principal inspector, the manager 
of the local flight standards district office/certificate holding 
district office. The AMOC approval letter must specifically 
reference this AD.
    (2) Airworthy Product: For any requirement in this AD to obtain 
corrective actions from a manufacturer or other source, use these 
actions if they are FAA-approved. Corrective actions are considered 
FAA-approved if they are approved by the State of Design Authority 
(or their delegated agent). You are required to assure the product 
is airworthy before it is returned to service.

(k) Related Information

    (1) Refer to MCAI Canadian Airworthiness Directive CF-2012-02R1, 
dated October 12, 2012; and Bombardier Service Bulletin 84-27-60, 
dated July 12, 2012; for related information.
    (2) For service information identified in this AD, contact 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt 
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone 416-375-4000; 
fax 416-375-4539; email thd.qseries@aero.bombardier.com; Internet 
https://www.bombardier.com. You may review copies of the referenced 
service information at the FAA, Transport Airplane Directorate, 1601 
Lind Avenue SW., Renton, Washington. For information on the 
availability of this material at the FAA, call 425-227-1221.

    Issued in Renton, Washington, on February 28, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-05597 Filed 3-11-13; 8:45 am]
BILLING CODE 4910-13-P
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