Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop Engines, 43964-43967 [E6-12420]

Download as PDF 43964 Federal Register / Vol. 71, No. 149 / Thursday, August 3, 2006 / Rules and Regulations Installation or Replacement DEPARTMENT OF TRANSPORTATION (f) Within 7,500 flight hours or 60 months after the effective date of this AD, whichever occurs earlier: Install or replace with improved parts, as applicable, the bonding straps between the metallic frame of the fillet and the wing leading edge ribs, on both the left and right sides of the airplane, in accordance with the Accomplishment Instructions of the applicable service bulletin identified in Table 1 of this AD. Alternative Methods of Compliance (AMOCs) (g)(1) The Manager, Los Angeles Aircraft Certification Office, 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. Material Incorporated by Reference (h) You must use McDonnell Douglas DC– 10 Service Bulletin 53–109, Revision 4, dated October 7, 1992; or McDonnell Douglas DC– 10 Service Bulletin 53–111, Revision 3, dated August 24, 1992; as applicable, to perform the actions that are required by this AD, unless the AD specifies otherwise. The Director of the Federal Register approved the incorporation by reference of these documents in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Contact Boeing Commercial Airplanes, Long Beach Division, 3855 Lakewood Boulevard, Long Beach, California 90846, Attention: Data and Service Management, Dept. C1–L5A (D800–0024), for a copy of this service information. You may review copies at the Docket Management Facility, U.S. Department of Transportation, 400 Seventh Street, SW., Room PL–401, Nassif Building, Washington, DC; on the Internet at https://dms.dot.gov; or at the National Archives and Records Administration (NARA). For information on the availability of this material at the NARA, call (202) 741–6030, or go to https://www. archives.gov/federal_register/code_of_ federal_regulations/ibr_locations.html. Issued in Renton, Washington, on July 21, 2006. Ali Bahrami, Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. E6–12299 Filed 8–2–06; 8:45 am] rwilkins on PROD1PC63 with RULES BILLING CODE 4910–13–P VerDate Aug<31>2005 16:16 Aug 02, 2006 Jkt 208001 Federal Aviation Administration 14 CFR Part 39 [Docket No. 2004–NE–10–AD; Amendment 39–14704; AD 2006–16–04] RIN 2120–AA64 Airworthiness Directives; Rolls-Royce Corporation (Formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250–B and 250–C Series Turboshaft and Turboprop Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: SUMMARY: The FAA is superseding an existing airworthiness directive (AD) for RRC 250–B and 250–C series turboshaft and turboprop engines. That AD currently requires a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. That AD also requires replacing the fuel nozzle with a new design fuel nozzle, at the next fuel nozzle overhaul or by June 30, 2006, whichever occurs first. This AD requires the same actions, but would add additional part numbers (P/Ns) to the list of affected fuel nozzles. This AD would also explain that the existing AD, as worded, allows certain part number (P/N) fuel nozzles back into service. Those fuel nozzles must not be allowed back into service. This AD is prompted by the discovery that several P/Ns of fuel nozzles were inadvertently left out of AD 2004–24–09. We are issuing this AD to minimize the risk of sudden loss of engine power and uncommanded shutdown of the engine due to fuel contamination and collapse of the screen in the fuel nozzle. DATES: This AD becomes effective September 7, 2006. ADDRESSES: You may examine the AD docket at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA. FOR FURTHER INFORMATION CONTACT: John Tallarovic, Aerospace Engineer, Chicago Aircraft Certification Office, FAA, 2300 East Devon Avenue, Des Plaines, IL 60018–4696; telephone (847) 294–8180; fax (847) 294–7834. SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 with a proposed airworthiness directive (AD). The proposed AD applies to RRC 250– B and 250–C series turboshaft and turboprop engines. We published the PO 00000 Frm 00010 Fmt 4700 Sfmt 4700 proposed AD in the Federal Register on October 18, 2005 (70 FR 60453). That action proposed to require a onetime inspection of the fuel nozzle screen for contamination, and if contamination is found, inspection and cleaning of the entire aircraft fuel system before further flight. That AD also proposed to require replacing the fuel nozzle with a new design fuel nozzle, at the next fuel nozzle overhaul. Examining the AD Docket You may examine the AD Docket (including any comments and service information), by appointment, between 8 a.m. and 4:30 p.m., Monday through Friday, except Federal holidays. See ADDRESSES for the location. Comments We provided the public the opportunity to participate in the development of this AD. We have considered the comments received. Listing of Rule in DMS One commenter believes that we should have listed the proposed action in ‘‘dms’’. We do not agree. Although the commenter did not define ‘‘dms,’’ the only relevant system is the Docket Management System (DMS). When we began this proposed rule early in 2004, we were not using the DMS and we could not list it in the system. Change Goodrich Aerospace to Delavan One commenter notes that Goodrich Aerospace acquired the company with the Parts Manufacturer Approval (PMA) cited in the proposed AD (Delavan) and suggests changing the name in the final rule. We agree and have changed the name to Goodrich Delavan (Delavan was misspelled in the proposed rule.) Combine Tables 3 and 4 One commenter requests we combine Tables 3 and 4. The commenter believes that the nozzles listed in Table 3 manufactured under the PMA, which require an inspection within 50 operating hours, should be treated in the same manner as the nozzles listed in Table 4, which do not require an inspection until 150 operating hours. We do not agree. Operators have already inspected the nozzles listed in Table 4 under the requirements of AD 2004–24– 09. After we published that AD, we found that we omitted some fuel nozzle part numbers from the list of parts requiring inspection. This proposed rule adds those omitted part numbers and includes both Rolls-Royce Corporation and PMA parts. Because we omitted these parts from AD 2004–24–09, operators have not inspected them yet. E:\FR\FM\03AUR1.SGM 03AUR1 Federal Register / Vol. 71, No. 149 / Thursday, August 3, 2006 / Rules and Regulations Based on that, we intentionally shortened the compliance time for inspecting them. We have not changed this AD. Correct Applicability Errors One commenter asks that we correct errors and omissions in the listing of aircraft models on which the affected engines are installed in Table 2. We agree and we have corrected this information in Table 2 and in the Applicability. Change in Required Compliance Time We have changed the compliance time required in paragraph (h) of the proposed rule from, ‘‘At the next fuel nozzle overhaul after the effective date of this AD, or by June 30, 2006, whichever occurs first * * *’’, to ‘‘At the next fuel nozzle overhaul after the effective date of this AD * * *’’, because the June 30, 2006 date has past. Conclusion We have carefully reviewed the available data, including the comments received, and determined that air safety and the public interest require adopting the AD with the changes described previously. We have determined that these changes will neither increase the economic burden on any operator nor increase the scope of the AD. rwilkins on PROD1PC63 with RULES Costs of Compliance We estimate that this AD will affect 10,000 engines installed on aircraft of U.S. registry. We also estimate that it will take about one work-hour per engine to perform the required actions, and that the average labor rate is $65 per work-hour. In addition, operators can either replace the fuel nozzle with a new one at a cost of about $2,595 or have the existing nozzle overhauled at a cost of about $850. We estimate that about 80 percent of the fuel nozzles will be overhauled and 20 percent will be replaced with a new nozzle. Therefore, we estimate that the required parts will cost, on average, about $1,200 per engine. Based on these figures, we estimate the total cost of the AD to U.S. operators to be $12,650,000. 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, VerDate Aug<31>2005 16:16 Aug 02, 2006 Jkt 208001 ‘‘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 have determined that this AD will not have federalism implications under Executive Order 13132. This AD will 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 that this AD: (1) Is not a ‘‘significant regulatory action’’ under Executive Order 12866; (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) 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 summary of the costs to comply with this AD and placed it in the AD Docket. You may get a copy of this summary by sending a request to us at the address listed under ADDRESSES. Include ‘‘AD Docket No. 2004–NE–10– AD’’ in your request. List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety. Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the Federal Aviation Administration amends 14 CFR part 39 as follows: PART 39—AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: I Authority: 49 U.S.C. 106(g), 40113, 44701. § 39.13 [Amended] 2. The FAA amends § 39.13 by removing Amendment 39–13885 (69 FR 69807, December 1, 2004) and by adding a new airworthiness directive, Amendment 39–14704, to read as follows: I 2006–16–04 Rolls-Royce Corporation (formerly Allison Engine Company, PO 00000 Frm 00011 Fmt 4700 Sfmt 4700 43965 Allison Gas Turbine Division, and Detroit Diesel Allison): Amendment 39– 14704. Docket No. 2004–NE–10–AD. Effective Date (a) This airworthiness directive (AD) becomes effective September 7, 2006. Affected ADs (b) This AD supersedes AD 2004–24–09, Amendment 39–13885. Applicability (c) This AD applies to Rolls-Royce Corporation (formerly Allison Engine Company, Allison Gas Turbine Division, and Detroit Diesel Allison) (RRC) 250–B and 250– C series turboshaft and turboprop engines in the following Table 1: TABLE 1.—250–B AND 250–C SERIES TURBOSHAFT AND TURBOPROP ENGINES AFFECTED –B15A –B15E –B15G –B17 –B17B –B17C –B17D –B17E –B17F –B17F/1 –B17F/2 –C10 –C10B –C10D –C18 –C18A –C18B –C18C –C20 –C20B –C20C –C20F –C20J –C20R –C20R/1 –C20R/2 –C20R/4 –C20S –C20W –C28 –C28B –C28C –C30 –C30G –C30G/2 –C30M –C30P –C30R –C30R/1 –C30R/3 –C30R/3M –C30S –C30U –C40B –C47B –C47M These engines are installed on, but not limited to, the aircraft listed in the following Table 2: E:\FR\FM\03AUR1.SGM 03AUR1 43966 Federal Register / Vol. 71, No. 149 / Thursday, August 3, 2006 / Rules and Regulations TABLE 2.—ENGINES INSTALLED ON, BUT NOT LIMITED TO Manufacturer Model AeroSpace Technologies of Australia Pty Ltd ......................................... Agusta ....................................................................................................... Arrow Falcon Exporters ............................................................................ Bell Helicopter Textron ............................................................................. N22B, N22S, and N24A. A109, A109A, A109AII, and A109C. OH–58A, OH–58A+, and OH–58C. 206A, 206A–1, 206B, 206L, 206L–1, 206L–3, 206L–4, 230, 407, and 430. BN–2T and BN–2T–4R. TH28, 480; and 480B. BO 105 LS A–3. BO–105A, BO–105C, BO–105LS A–1, and BO–105S. AS355E, AS355F, AS355I, and AS355F2. 100, 420, and MX–7–420A. OH–58A, OH–58A+, OH–58C; Maule zm–7–420A, MT–7–420, MX–7– 420, MX–7–420A. 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, and 600N. OH–58A, OH–58A+, and OH–58C. TH269D. SF600 and SF600A. S–76A. AP68TP 300, and AP68TP 600. B–N Group ................................................................................................ Enstrom Helicopter ................................................................................... Eurocopter Canada Limited ...................................................................... Eurocopter Deutschland ........................................................................... Eurocopter France .................................................................................... FH–1100 Manufacturing Corporation ....................................................... Garlick Helicopters ................................................................................... MD Helicopters Inc ................................................................................... San Joaquin Helicopters .......................................................................... Schweizer ................................................................................................. SIAI Marchetti s.r.l .................................................................................... Sikorsky Aircraft Corporation .................................................................... Vulcanair S.p.A ......................................................................................... Unsafe Condition (d) This AD is prompted by the discovery that several part numbers (P/Ns) of fuel nozzles were inadvertently left out of AD 2004–24–09. That AD, as worded, allows certain P/N fuel nozzles back into service. Those fuel nozzles must not be allowed back into service. We are issuing this AD to minimize the risk of sudden loss of engine power and uncommanded shutdown of the engine due to fuel contamination and collapse of the screen in the fuel nozzle. Compliance (e) You are responsible for having the actions required by this AD performed within the compliance times specified unless the actions have already been done. (f) Perform a onetime inspection of the screens in fuel nozzles as follows: (1) For fuel nozzles with a P/N listed in Table 3 of this AD, inspect the screen for contamination within 50 operating hours after the effective date of this AD. TABLE 3.—FUEL NOZZLES TO BE INSPECTED WITHIN 50 OPERATING HOURS Manufacturer P/N RRC ......................................................................................................................................................................... 6874959 6894610 6898531 47069 47101 49445 Goodrich Delavan (Parts Manufacturer Approval (PMA)) ....................................................................................... (2) For fuel nozzles with a P/N listed in Table 4 of this AD, inspect the screen for Corresponding RRC vendor P/N 5232815 5233465 5233585 N/A N/A N/A contamination within 150 operating hours after January 5, 2005. TABLE 4.—FUEL NOZZLES TO BE INSPECTED WITHIN 150 OPERATING HOURS Manufacturer P/N rwilkins on PROD1PC63 with RULES RRC ......................................................................................................................................................................... (g) If you find contamination on the screen, inspect and clean the entire aircraft fuel system before further flight. (h) At the next fuel nozzle overhaul after the effective date of this AD, do the following: (1) Remove from service fuel nozzles listed in Table 3 and Table 4 of this AD. (2) Replace with a serviceable fuel nozzle. VerDate Aug<31>2005 16:16 Aug 02, 2006 Jkt 208001 Corresponding RRC vendor P/N 6852020 6890917 6899001 5232480 5233333 5233600 Definition (i) For the purposes of this AD, a serviceable fuel nozzle is defined as a nozzle that has a P/N not specified in, or addressed by, this AD. 6852020, 6890917, and 6899001 using AD 2004–24–09. Alternative Methods of Compliance Previous Credit (j) Previous credit is given for onetime inspections of fuel nozzles, RRC P/Ns PO 00000 Frm 00012 Fmt 4700 Sfmt 4700 (k) The Manager, Chicago Aircraft Certification Office, has the authority to approve alternative methods of compliance for this AD if requested using the procedures found in 14 CFR 39.19. E:\FR\FM\03AUR1.SGM 03AUR1 Federal Register / Vol. 71, No. 149 / Thursday, August 3, 2006 / Rules and Regulations Related Information (l) Information related to the subject of this AD can be found in Rolls-Royce Corporation Alert Commercial Engine Bulletins (CEBs), all at Revision 1, and all dated August 30, 2004, listed in the following Table 5: TABLE 5.—RELATED ALERT COMMERCIAL ENGINE BULLETINS CEB–A–313 ................... CEB–A–73–2075 ........... CEB–A–1394 ................. CEB–A–73–3118 ........... CEB–A–73–4056 ........... CEB–A–73–5029 CEB–A–73–6041 TP CEB–A–183 TP CEB–A–1336 TP CEB–A–73– 2032 Issued in Burlington, Massachusetts, on July 27, 2006. Francis A. Favara, Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. E6–12420 Filed 8–2–06; 8:45 am] Following these changes of sponsorship, Rhodia UK Ltd. is no longer the sponsor of an approved application. In addition, Nicholas Piramal India Ltd. UK is not currently listed in the animal drug regulations as a sponsor of an approved application. Accordingly, 21 CFR 510.600(c) is being amended to remove the entries for Rhodia UK Ltd. to add entries for Nicholas Piramal India Ltd. UK. This rule does not meet the definition of ‘‘rule’’ in 5 U.S.C. 804(3)(A) because it is a rule of ‘‘particular applicability.’’ Therefore, it is not subject to the congressional review requirements in 5 U.S.C. 801–808. Animal drugs. Therefore, under the Federal Food, Drug, and Cosmetic Act and under authority delegated to the Commissioner of Food and Drugs and redelegated to the Center for Veterinary Medicine, 21 CFR parts 510 and 529 are amended as follows: 21 CFR Parts 510 and 529 New Animal Drugs; Change of Sponsor; Isoflurane PART 529—OTHER DOSAGE FORM NEW ANIMAL DRUGS 3. The authority citation for 21 CFR part 529 continues to read as follows: I Authority: 21 U.S.C. 360b. I Isoflurane. (a) Specifications. The drug is a clear, colorless, stable liquid. * * * * * (c) Conditions of use. Administer by inhalation: * * * * * (3) Limitations. Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian. I Food and Drug Administration, HHS. Authority: 21 U.S.C. 321, 331, 351, 352, 353, 360b, 371, 379e. Dated: July 24, 2006. Bernadette A. Dunham, Deputy Director, Office of New Animal Drug Evaluation, Center for Veterinary Medicine. [FR Doc. E6–12570 Filed 8–2–06; 8:45 am] BILLING CODE 4160–01–S PART 510—NEW ANIMAL DRUGS 1. The authority citation for 21 CFR part 510 continues to read as follows: Final rule. SUMMARY: The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect a change of sponsor for an abbreviated new animal drug application (ANADA) for isoflurane, U.S.P., from Rhodia UK Ltd. to Nicholas Piramal India Ltd. UK. DATES: This rule is effective August 3, 2006. FOR FURTHER INFORMATION CONTACT: rwilkins on PROD1PC63 with RULES * § 529.1186 I Food and Drug Administration David R. Newkirk, Center for Veterinary Medicine (HFV–100), Food and Drug Administration, 7500 Standish Pl., Rockville, MD 20855, 301–827–6967, email: david.newkirk@fda.hhs.gov. SUPPLEMENTARY INFORMATION: Rhodia UK Ltd., P.O. Box 46, St. Andrews Rd., Avonmouth, Bristol BS11 9YF, England, UK, has informed FDA that it has transferred ownership of, and all rights and interest in, ANADA 200–237 for isoflurane, U.S.P., to Nicholas Piramal India Ltd. UK, 1st Floor, Alpine House, Unit II, Honeypot Lane, London, NW99RX, England, UK. Accordingly, the regulations are amended in 21 CFR 529.1186 to reflect this change of sponsorship and a current format. 16:16 Aug 02, 2006 * * * * Nicholas Piramal India Ltd. UK, 1st Floor, Alpine House, Unit II, Honeypot Lane, London, NW99RX, England, UK * * * Administrative practice and procedure, Animal drugs, Labeling, Reporting and recordkeeping requirements. 21 CFR Part 529 VerDate Aug<31>2005 * 21 CFR Part 510 DEPARTMENT OF HEALTH AND HUMAN SERVICES ACTION: * 066112 Firm name and address 4. In § 529.1186, in paragraph (b), remove ‘‘059258’’ and numerically add ‘‘066112’’; and revise paragraph (a), the introductory text of paragraph (c), and paragraph (c)(3) to read as follows: List of Subjects BILLING CODE 4910–13–P AGENCY: Drug labeler code 43967 Jkt 208001 2. In § 510.600, in the table in paragraph (c)(1), alphabetically add an entry for ‘‘Nicholas Piramal India Ltd. UK’’ and remove the entry for ‘‘Rhodia UK Limited’’; and in the table in paragraph (c)(2) remove the entry for ‘‘059258’’ and numerically add an entry for ‘‘066112’’ to read as follows: I DEPARTMENT OF HEALTH AND HUMAN SERVICES Food and Drug Administration 21 CFR Part 520 § 510.600 Names, addresses, and drug labeler codes of sponsors of approved applications. Oral Dosage Form New Animal Drugs; Kanamycin, Bismuth Subcarbonate, Activated Attapulgite * AGENCY: * * (c) * * * (1) * * * * * * * * Nicholas Piramal India Ltd. UK, 1st Floor, Alpine House, Unit II, Honeypot Lane, London, NW99RX, England, UK. * * * Drug labeler code * 066112 * * * (2) * * * Frm 00013 Final rule; technical amendment. ACTION: Firm name and address PO 00000 Food and Drug Administration, HHS. Fmt 4700 Sfmt 4700 SUMMARY: The Food and Drug Administration (FDA) is amending the animal drug regulations to remove inactive ingredients from the specifications for an oral suspension and for tablets containing kanamycin, bismuth subcarbonate, and activated attapulgite; and to consolidate and reformat these sections. These actions are being taken to improve the accuracy E:\FR\FM\03AUR1.SGM 03AUR1

Agencies

[Federal Register Volume 71, Number 149 (Thursday, August 3, 2006)]
[Rules and Regulations]
[Pages 43964-43967]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: E6-12420]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2004-NE-10-AD; Amendment 39-14704; AD 2006-16-04]
RIN 2120-AA64


Airworthiness Directives; Rolls-Royce Corporation (Formerly 
Allison Engine Company, Allison Gas Turbine Division, and Detroit 
Diesel Allison) (RRC) 250-B and 250-C Series Turboshaft and Turboprop 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: The FAA is superseding an existing airworthiness directive 
(AD) for RRC 250-B and 250-C series turboshaft and turboprop engines. 
That AD currently requires a onetime inspection of the fuel nozzle 
screen for contamination, and if contamination is found, inspection and 
cleaning of the entire aircraft fuel system before further flight. That 
AD also requires replacing the fuel nozzle with a new design fuel 
nozzle, at the next fuel nozzle overhaul or by June 30, 2006, whichever 
occurs first. This AD requires the same actions, but would add 
additional part numbers (P/Ns) to the list of affected fuel nozzles. 
This AD would also explain that the existing AD, as worded, allows 
certain part number (P/N) fuel nozzles back into service. Those fuel 
nozzles must not be allowed back into service. This AD is prompted by 
the discovery that several P/Ns of fuel nozzles were inadvertently left 
out of AD 2004-24-09. We are issuing this AD to minimize the risk of 
sudden loss of engine power and uncommanded shutdown of the engine due 
to fuel contamination and collapse of the screen in the fuel nozzle.

DATES: This AD becomes effective September 7, 2006.

ADDRESSES: You may examine the AD docket at the FAA, New England 
Region, Office of the Regional Counsel, 12 New England Executive Park, 
Burlington, MA.

FOR FURTHER INFORMATION CONTACT: John Tallarovic, Aerospace Engineer, 
Chicago Aircraft Certification Office, FAA, 2300 East Devon Avenue, Des 
Plaines, IL 60018-4696; telephone (847) 294-8180; fax (847) 294-7834.

SUPPLEMENTARY INFORMATION: The FAA proposed to amend 14 CFR part 39 
with a proposed airworthiness directive (AD). The proposed AD applies 
to RRC 250-B and 250-C series turboshaft and turboprop engines. We 
published the proposed AD in the Federal Register on October 18, 2005 
(70 FR 60453). That action proposed to require a onetime inspection of 
the fuel nozzle screen for contamination, and if contamination is 
found, inspection and cleaning of the entire aircraft fuel system 
before further flight. That AD also proposed to require replacing the 
fuel nozzle with a new design fuel nozzle, at the next fuel nozzle 
overhaul.

Examining the AD Docket

    You may examine the AD Docket (including any comments and service 
information), by appointment, between 8 a.m. and 4:30 p.m., Monday 
through Friday, except Federal holidays. See ADDRESSES for the 
location.

Comments

    We provided the public the opportunity to participate in the 
development of this AD. We have considered the comments received.

Listing of Rule in DMS

    One commenter believes that we should have listed the proposed 
action in ``dms''. We do not agree. Although the commenter did not 
define ``dms,'' the only relevant system is the Docket Management 
System (DMS). When we began this proposed rule early in 2004, we were 
not using the DMS and we could not list it in the system.

Change Goodrich Aerospace to Delavan

    One commenter notes that Goodrich Aerospace acquired the company 
with the Parts Manufacturer Approval (PMA) cited in the proposed AD 
(Delavan) and suggests changing the name in the final rule. We agree 
and have changed the name to Goodrich Delavan (Delavan was misspelled 
in the proposed rule.)

Combine Tables 3 and 4

    One commenter requests we combine Tables 3 and 4. The commenter 
believes that the nozzles listed in Table 3 manufactured under the PMA, 
which require an inspection within 50 operating hours, should be 
treated in the same manner as the nozzles listed in Table 4, which do 
not require an inspection until 150 operating hours. We do not agree. 
Operators have already inspected the nozzles listed in Table 4 under 
the requirements of AD 2004-24-09. After we published that AD, we found 
that we omitted some fuel nozzle part numbers from the list of parts 
requiring inspection. This proposed rule adds those omitted part 
numbers and includes both Rolls-Royce Corporation and PMA parts. 
Because we omitted these parts from AD 2004-24-09, operators have not 
inspected them yet.

[[Page 43965]]

Based on that, we intentionally shortened the compliance time for 
inspecting them. We have not changed this AD.

Correct Applicability Errors

    One commenter asks that we correct errors and omissions in the 
listing of aircraft models on which the affected engines are installed 
in Table 2. We agree and we have corrected this information in Table 2 
and in the Applicability.

Change in Required Compliance Time

    We have changed the compliance time required in paragraph (h) of 
the proposed rule from, ``At the next fuel nozzle overhaul after the 
effective date of this AD, or by June 30, 2006, whichever occurs first 
* * *'', to ``At the next fuel nozzle overhaul after the effective date 
of this AD * * *'', because the June 30, 2006 date has past.

Conclusion

    We have carefully reviewed the available data, including the 
comments received, and determined that air safety and the public 
interest require adopting the AD with the changes described previously. 
We have determined that these changes will neither increase the 
economic burden on any operator nor increase the scope of the AD.

Costs of Compliance

    We estimate that this AD will affect 10,000 engines installed on 
aircraft of U.S. registry. We also estimate that it will take about one 
work-hour per engine to perform the required actions, and that the 
average labor rate is $65 per work-hour. In addition, operators can 
either replace the fuel nozzle with a new one at a cost of about $2,595 
or have the existing nozzle overhauled at a cost of about $850. We 
estimate that about 80 percent of the fuel nozzles will be overhauled 
and 20 percent will be replaced with a new nozzle. Therefore, we 
estimate that the required parts will cost, on average, about $1,200 
per engine. Based on these figures, we estimate the total cost of the 
AD to U.S. operators to be $12,650,000.

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 have determined that this AD will not have federalism 
implications under Executive Order 13132. This AD will 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 that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866;
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979); and
    (3) 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 summary of the costs to comply with this AD and 
placed it in the AD Docket. You may get a copy of this summary by 
sending a request to us at the address listed under ADDRESSES. Include 
``AD Docket No. 2004-NE-10-AD'' in your request.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the Federal Aviation Administration amends 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 removing Amendment 39-13885 (69 FR 
69807, December 1, 2004) and by adding a new airworthiness directive, 
Amendment 39-14704, to read as follows:

2006-16-04 Rolls-Royce Corporation (formerly Allison Engine Company, 
Allison Gas Turbine Division, and Detroit Diesel Allison): Amendment 
39-14704. Docket No. 2004-NE-10-AD.

Effective Date

    (a) This airworthiness directive (AD) becomes effective 
September 7, 2006.

Affected ADs

    (b) This AD supersedes AD 2004-24-09, Amendment 39-13885.

Applicability

    (c) This AD applies to Rolls-Royce Corporation (formerly Allison 
Engine Company, Allison Gas Turbine Division, and Detroit Diesel 
Allison) (RRC) 250-B and 250-C series turboshaft and turboprop 
engines in the following Table 1:

    Table 1.--250-B and 250-C Series Turboshaft and Turboprop Engines
                                Affected
------------------------------------------------------------------------
 
-------------------------------------------------------------------------
                                    -B15A
                                    -B15E
                                    -B15G
                                     -B17
                                    -B17B
                                    -B17C
                                    -B17D
                                    -B17E
                                    -B17F
                                  -B17F/1
                                  -B17F/2
                                     -C10
                                    -C10B
                                    -C10D
                                     -C18
                                    -C18A
                                    -C18B
                                    -C18C
                                     -C20
                                    -C20B
                                    -C20C
                                    -C20F
                                    -C20J
                                    -C20R
                                  -C20R/1
                                  -C20R/2
                                  -C20R/4
                                    -C20S
                                    -C20W
                                     -C28
                                    -C28B
                                    -C28C
                                     -C30
                                    -C30G
                                  -C30G/2
                                    -C30M
                                    -C30P
                                    -C30R
                                  -C30R/1
                                  -C30R/3
                                 -C30R/3M
                                    -C30S
                                    -C30U
                                    -C40B
                                    -C47B
                                    -C47M
------------------------------------------------------------------------

    These engines are installed on, but not limited to, the aircraft 
listed in the following Table 2:

[[Page 43966]]



           Table 2.--Engines Installed on, But Not Limited To
------------------------------------------------------------------------
              Manufacturer                            Model
------------------------------------------------------------------------
AeroSpace Technologies of Australia Pty  N22B, N22S, and N24A.
 Ltd.
Agusta.................................  A109, A109A, A109AII, and
                                          A109C.
Arrow Falcon Exporters.................  OH-58A, OH-58A+, and OH-58C.
Bell Helicopter Textron................  206A, 206A-1, 206B, 206L, 206L-
                                          1, 206L-3, 206L-4, 230, 407,
                                          and 430.
B-N Group..............................  BN-2T and BN-2T-4R.
Enstrom Helicopter.....................  TH28, 480; and 480B.
Eurocopter Canada Limited..............  BO 105 LS A-3.
Eurocopter Deutschland.................  BO-105A, BO-105C, BO-105LS A-1,
                                          and BO-105S.
Eurocopter France......................  AS355E, AS355F, AS355I, and
                                          AS355F2.
FH-1100 Manufacturing Corporation......  100, 420, and MX-7-420A.
Garlick Helicopters....................  OH-58A, OH-58A+, OH-58C; Maule
                                          zm-7-420A, MT-7-420, MX-7-420,
                                          MX-7-420A.
MD Helicopters Inc.....................  369, 369A, 369D, 369E, 369F,
                                          369FF, 369H, 369HE, 369HM,
                                          369HS, 500N, and 600N.
San Joaquin Helicopters................  OH-58A, OH-58A+, and OH-58C.
Schweizer..............................  TH269D.
SIAI Marchetti s.r.l...................  SF600 and SF600A.
Sikorsky Aircraft Corporation..........  S-76A.
Vulcanair S.p.A........................  AP68TP 300, and AP68TP 600.
------------------------------------------------------------------------

Unsafe Condition

    (d) This AD is prompted by the discovery that several part 
numbers (P/Ns) of fuel nozzles were inadvertently left out of AD 
2004-24-09. That AD, as worded, allows certain P/N fuel nozzles back 
into service. Those fuel nozzles must not be allowed back into 
service. We are issuing this AD to minimize the risk of sudden loss 
of engine power and uncommanded shutdown of the engine due to fuel 
contamination and collapse of the screen in the fuel nozzle.

Compliance

    (e) You are responsible for having the actions required by this 
AD performed within the compliance times specified unless the 
actions have already been done.
    (f) Perform a onetime inspection of the screens in fuel nozzles 
as follows:
    (1) For fuel nozzles with a P/N listed in Table 3 of this AD, 
inspect the screen for contamination within 50 operating hours after 
the effective date of this AD.

    Table 3.--Fuel Nozzles To Be Inspected Within 50 Operating Hours
------------------------------------------------------------------------
                                                           Corresponding
              Manufacturer                      P/N       RRC vendor P/N
------------------------------------------------------------------------
RRC.....................................         6874959         5232815
                                                 6894610         5233465
                                                 6898531         5233585
Goodrich Delavan (Parts Manufacturer               47069             N/A
 Approval (PMA))........................           47101             N/A
                                                   49445             N/A
------------------------------------------------------------------------

    (2) For fuel nozzles with a P/N listed in Table 4 of this AD, 
inspect the screen for contamination within 150 operating hours 
after January 5, 2005.

    Table 4.--Fuel Nozzles To Be Inspected Within 150 Operating Hours
------------------------------------------------------------------------
                                                           Corresponding
              Manufacturer                      P/N       RRC vendor P/N
------------------------------------------------------------------------
RRC.....................................         6852020         5232480
                                                 6890917         5233333
                                                 6899001         5233600
------------------------------------------------------------------------

    (g) If you find contamination on the screen, inspect and clean 
the entire aircraft fuel system before further flight.
    (h) At the next fuel nozzle overhaul after the effective date of 
this AD, do the following:
    (1) Remove from service fuel nozzles listed in Table 3 and Table 
4 of this AD.
    (2) Replace with a serviceable fuel nozzle.

Definition

    (i) For the purposes of this AD, a serviceable fuel nozzle is 
defined as a nozzle that has a P/N not specified in, or addressed 
by, this AD.

Previous Credit

    (j) Previous credit is given for onetime inspections of fuel 
nozzles, RRC P/Ns 6852020, 6890917, and 6899001 using AD 2004-24-09.

Alternative Methods of Compliance

    (k) The Manager, Chicago Aircraft Certification Office, has the 
authority to approve alternative methods of compliance for this AD 
if requested using the procedures found in 14 CFR 39.19.

[[Page 43967]]

Related Information

    (l) Information related to the subject of this AD can be found 
in Rolls-Royce Corporation Alert Commercial Engine Bulletins (CEBs), 
all at Revision 1, and all dated August 30, 2004, listed in the 
following Table 5:

           Table 5.--Related Alert Commercial Engine Bulletins
------------------------------------------------------------------------
 
------------------------------------------------------------------------
CEB-A-313.............................  CEB-A-73-5029
CEB-A-73-2075.........................  CEB-A-73-6041
CEB-A-1394............................  TP CEB-A-183
CEB-A-73-3118.........................  TP CEB-A-1336
CEB-A-73-4056.........................  TP CEB-A-73-2032
------------------------------------------------------------------------


    Issued in Burlington, Massachusetts, on July 27, 2006.
Francis A. Favara,
Manager, Engine and Propeller Directorate, Aircraft Certification 
Service.
 [FR Doc. E6-12420 Filed 8-2-06; 8:45 am]
BILLING CODE 4910-13-P

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