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, 60453-60456 [05-20779]

Download as PDF 60453 Proposed Rules Federal Register Vol. 70, No. 200 Tuesday, October 18, 2005 This section of the FEDERAL REGISTER contains notices to the public of the proposed issuance of rules and regulations. The purpose of these notices is to give interested persons an opportunity to participate in the rule making prior to the adoption of the final rules. DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 2004–NE–10–AD] 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: Notice of proposed rulemaking (NPRM). AGENCY: SUMMARY: The FAA proposes to supersede an existing airworthiness directive (AD) for certain 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 proposed AD would require the same actions, but would add additional part numbers (P/Ns) to the list of affected fuel nozzles. This proposed 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 proposed AD results from the discovery that several P/Ns of fuel nozzles were inadvertently left out of AD 2004–24–09. We are proposing 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: We must receive any comments on this proposed AD by December 19, 2005. VerDate Aug<31>2005 16:51 Oct 17, 2005 Jkt 208001 Use one of the following addresses to submit comments on this proposed AD: • By mail: Federal Aviation Administration (FAA), New England Region, Office of the Regional Counsel, Attention: Rules Docket No. 2004–NE– 10–AD, 12 New England Executive Park, Burlington, MA 01803–5299. • By fax: (781) 238–7055. • By e-mail: 9-aneadcomment@faa.gov. You can get the service information identified in this proposed AD from Rolls-Royce Corporation, P.O. Box 420, Indianapolis, IN 46206–0420; telephone (317) 230–6400; fax (317) 230–4243. 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: ADDRESSES: Comments Invited We invite you to submit any written relevant data, views, or arguments regarding this proposal. Send your comments to an address listed under ADDRESSES. Include ‘‘AD Docket No. 2004–NE–10–AD’’ in the subject line of your comments. If you want us to acknowledge receipt of your mailed comments, send us a self-addressed, stamped postcard with the docket number written on it; we will datestamp your postcard and mail it back to you. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of the proposed AD. If a person contacts us verbally, and that contact relates to a substantive part of this proposed AD, we will summarize the contact and place the summary in the docket. We will consider all comments received by the closing date and may amend the proposed AD in light of those comments. 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. PO 00000 Frm 00001 Fmt 4702 Sfmt 4702 Discussion On November 22, 2004, we issued AD 2004–24–09, Amendment 39–13885 (69 FR 69807, December 1, 2004). That AD 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. That AD was the result of 10 reports of engine power loss with accompanying collapse of the fuel nozzle screen, due to fuel contamination. That condition, if not corrected, could result in sudden loss of engine power and uncommanded shutdown of the engine due to fuel contamination and collapse of the screen in the fuel nozzle. Actions Since AD 2004–24–09 Was Issued Since AD 2004–24–09 was issued, we discovered that several RRC and Parts Manufacturer Approval (PMA) fuel nozzle part numbers were inadvertently left out of the AD. Additionally, we discovered that certain RRC fuel nozzles are only identified by their vendor part number. Because AD 2004–24–09 defined a serviceable fuel nozzle as a nozzle that has a P/N not specified in, or addressed by, that AD, it is possible that operators could return to service fuel nozzles, P/Ns 6874959, 6894610, and 6898531, and then record being in compliance with AD 2004–24–09. In those cases, the minimizing of 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, has not been achieved. We have added these additional RRC, PMA, and vendor part numbers to this proposed AD. FAA’s Determination and Requirements of the Proposed AD We have evaluated all pertinent information and identified an unsafe condition that is likely to exist or develop on other products of this same type design. We are proposing this AD, which would 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. This proposed AD requires: E:\FR\FM\18OCP1.SGM 18OCP1 60454 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Proposed Rules • A onetime inspection of the screens in certain P/N fuel nozzles for contamination within 50 operating hours after the effective date of the proposed AD; or • A onetime inspection of the screens in certain P/N fuel nozzles for contamination within 150 operating hours after January 5, 2005, unless already done using AD 2004–24–09; and • If contamination is found, inspecting and cleaning the entire aircraft fuel system, before further flight; and • Replacing the fuel nozzles listed in this AD with a new design fuel nozzle, at the next fuel nozzle overhaul or by June 30, 2006, whichever occurs first. Costs of Compliance There are about 15,000 RRC 250–B and 250–C series turboshaft and turboprop engines of the affected design in the worldwide fleet. We estimate that 10,000 engines installed on aircraft of U.S. registry would be affected by this proposed AD. We also estimate that it would take about one work hour per engine to perform the proposed 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% of the fuel nozzles will be overhauled and 20% will be replaced with a new nozzle. Therefore, we estimate that the required parts would cost, on average, about $1,200 per engine. Based on these figures, we estimate the total cost of the proposed 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 VerDate Aug<31>2005 17:09 Oct 17, 2005 Jkt 208001 that is likely to exist or develop on products identified in this rulemaking action. Regulatory Findings We have determined that this proposed AD will not have federalism implications under Executive Order 13132. This proposed 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 the 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. 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 proposed 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. The Proposed Amendment Under the authority delegated to me by the Administrator, the Federal Aviation Administration 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 removing Amendment 39–13885 (69 FR 69807, December 1, 2004), and by adding a new airworthiness directive to read as follows: Rolls-Royce Corporation: Docket No. 2004–NE–10–AD. directive (AD) action by December 19, 2005. Affected ADs (b) This AD supersedes AD 2004–24– 09. 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 –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 Comments Due Date (a) The Federal Aviation Administration (FAA) must receive comments on this airworthiness PO 00000 Frm 00002 Fmt 4702 Sfmt 4702 These engines are installed on, but not limited to, the aircraft listed in the following Table 2: E:\FR\FM\18OCP1.SGM 18OCP1 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Proposed Rules 60455 TABLE 2.—ENGINES INSTALLED ON, BUT NOT LIMITED TO Manufacturer Model Agusta ....................................................................................................... Bell Helicopter Textron ............................................................................. B–N Group ................................................................................................ Enstrom .................................................................................................... Eurocopter Canada Limited ...................................................................... Eurocopter France .................................................................................... Eurocopter Deutschland ........................................................................... Hiller Aviation ............................................................................................ McDonnell Douglas .................................................................................. Schweizer ................................................................................................. SIAI Marchetti s.r.l. ................................................................................... Sikorsky .................................................................................................... Unsafe Condition (d) This AD results from 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 A109, A109A, A109AII, and A109C. 47, 206A, 206B, 206L, 206L–1, 206L–3, 206L–4, 407, and 430. BN–2T and BN–2T–4R. TH28, 480; and 480B. BO 105 LS A–3. AS355E, AS355F, AS355I, and AS355F2. BO–105A, BO–105C, BO–105S, and BO–105LS A–1. FH–1100. 369D, 369E, 369F, 369H, 369HE, 369HM, 369HS, 369FF, and 500N. TH269D. SF600 and SF600A. S–76A. 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 49445 47069 47101 Delevan Inc. (PMA) ................................................................................................................................................. (2) For fuel nozzles with a P/N listed in Table 4 of this AD, inspect the screen Corresponding RRC vendor P/N 5232815 5233465 5233585 N/A N/A N/A for contamination within 150 operating hours after January 5, 2005. TABLE 4.—FUEL NOZZLES TO BE INSPECTED WITHIN 150 OPERATING HOURS Manufacturer P/N RRC ......................................................................................................................................................................... (g) Before further flight, inspect and clean the entire aircraft fuel system if you find any contamination on the screen. (h) At the next fuel nozzle overhaul after the effective date of this AD, or by June 30, 2006, whichever occurs first, 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 16:51 Oct 17, 2005 Jkt 208001 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 6899001 Corresponding RRC vendor P/N 5232480 5233333 5233600 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. 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. 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: PO 00000 Frm 00003 Fmt 4702 Sfmt 4702 E:\FR\FM\18OCP1.SGM 18OCP1 60456 Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / Proposed Rules 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 ...................................................................................... Issued in Burlington, Massachusetts, on October 11, 2005. Ann C. Mollica, Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 05–20779 Filed 10–17–05; 8:45 am] BILLING CODE 4910–13–P NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 14 CFR Part 1260 RIN 2700–AC63 NASA Grant and Cooperative Agreement Handbook—Research and Development Abstracts National Aeronautics and Space Administration. ACTION: Withdrawal of proposed rule. AGENCY: SUMMARY: This action withdraws the proposed rule published Friday, October 31, 2003 (68 FR 62031–62033). NASA will issue internal guidance to automate the collection and transfer of Research and Development (R&D) abstracts to an appropriate central repository where they will be available for use by government agencies and other users. DATES: October 18, 2005. FOR FURTHER INFORMATION CONTACT: Monique Sullivan, NASA Headquarters, Contract Management Division, Washington, DC, (703) 553–2560, email: Monique.sullivan-1@nasa.gov. SUPPLEMENTARY INFORMATION: Background In the proposed rule published Friday, October 31, 2003 (68 FR 62031– 62033), NASA proposed to amend the NASA Grant and Cooperative Agreement Handbook to include a requirement for the electronic submission of abstracts of the planned research to be conducted under grants and cooperative agreements containing research and development (R&D) effort valued at over $25,000. The proposed rule added a new provision, 1260.40, NASA Research and Development (R&D) Abstracts, and related instructions, 1260.18, NASA Research and Development (R&D) Abstract Collection, to the Grant and Cooperative Agreement Handbook. The VerDate Aug<31>2005 16:51 Oct 17, 2005 Jkt 208001 CEB–A–73–5029. CEB–A–73–6041. TP CEB–A–183. TP CEB–A–1336. TP CEB–A–73–2032. new provision provided for the collections of abstracts or summaries for NASA-funded-awards with R&D effort greater than $25,000. The requirements of section 207(g) of the E-Government Act of 2002 (Pub. L. 107–347) provide the basis for this change. Section 207(g) mandates the development and maintenance of a repository that integrates information on research and development funded by the FederalGovernment. In furtherance of this requirement, NASA established a Web-based database system to collect summaries or abstracts for all the Agency’s procurements containing research and development effort valued over $25,000. A NASA Web site was also established for recipients of NASA R&D grants and cooperative agreements to enter their abstract data. The proposed rule is withdrawn because the automation of the requirements of section 207(g) of the E-Government Act of 2002 (Pub. L. 107–347) voids the need for the proposed rule. James A. Balinskas, Acting Assistant Administrator for Procurement. [FR Doc. 05–20845 Filed 10–17–05; 8:45 am] BILLING CODE 7510–01–P DEPARTMENT OF ENERGY Federal Energy Regulatory Commission 18 CFR Parts 131 and 292 [Docket No. RM05–36–000] Revised Regulations Governing Small Power Production and Cogeneration Facilities October 11, 2005. Federal Energy Regulatory Commission, DOE. ACTION: Notice of proposed rulemaking. AGENCY: SUMMARY: The Federal Energy Regulatory Commission (Commission) is proposing to amend its regulations governing small power production and cogeneration pursuant to section 1253 of the Energy Policy Act of 2005 (EPAct 2005), and section 210 of the Public Utility Regulatory Policies Act of 1978 (PURPA). Specifically, the Commission PO 00000 Frm 00004 Fmt 4702 Sfmt 4702 is proposing to (1) issue a rule ensuring that new qualifying cogeneration facilities are using their thermal output in a productive and beneficial manner; that the electrical, thermal, chemical and mechanical output of the new qualifying cogeneration facilities is used fundamentally for industrial, commercial or institutional purposes; and that there is continuing progress in the development of efficient electric energy generating technology; (2) amend Form 556 to reflect the criteria for new qualifying cogeneration facilities, (3) issue a rule eliminating ownership limitations for qualifying cogeneration and small power production facilities; and (4) amend the exemptions available to qualifying facilities from the requirements of the Federal Power Act and the Public Utility Holding Company Act of 1935. Comments are due November 8, 2005. Reply Comments are due November 15, 2005. DATES: Comments may be filed electronically via the eFiling link on the Commission’s Web site at https:// www.ferc.gov. Commenters unable to file comments electronically must send an original and 14 copies of their comments to: Federal Energy Regulatory Commission, Office of the Secretary, 888 First Street, NE., Washington, DC 20426. Refer to the Comment Procedures section of the preamble for additional information on how to file comments. ADDRESSES: FOR FURTHER INFORMATION CONTACT: Daniel Hedberg (Technical Information), Office of Markets, Tariffs and Rates, Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426, (202) 502– 6243. Samuel Higginbottom (Legal Information), Office of the General Counsel, Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426, (202) 502– 8561. Eric D. Winterbauer (Legal Information), Office of the General Counsel, Federal Energy Regulatory Commission, 888 First Street, NE., Washington, DC 20426, (202) 502–8329. SUPPLEMENTARY INFORMATION: E:\FR\FM\18OCP1.SGM 18OCP1

Agencies

[Federal Register Volume 70, Number 200 (Tuesday, October 18, 2005)]
[Proposed Rules]
[Pages 60453-60456]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 05-20779]


========================================================================
Proposed Rules
                                                Federal Register
________________________________________________________________________

This section of the FEDERAL REGISTER contains notices to the public of 
the proposed issuance of rules and regulations. The purpose of these 
notices is to give interested persons an opportunity to participate in 
the rule making prior to the adoption of the final rules.

========================================================================


Federal Register / Vol. 70, No. 200 / Tuesday, October 18, 2005 / 
Proposed Rules

[[Page 60453]]



DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. 2004-NE-10-AD]
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: Notice of proposed rulemaking (NPRM).

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

SUMMARY: The FAA proposes to supersede an existing airworthiness 
directive (AD) for certain 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 proposed AD would require 
the same actions, but would add additional part numbers (P/Ns) to the 
list of affected fuel nozzles. This proposed 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 proposed AD results from the discovery that several 
P/Ns of fuel nozzles were inadvertently left out of AD 2004-24-09. We 
are proposing 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: We must receive any comments on this proposed AD by December 19, 
2005.

ADDRESSES: Use one of the following addresses to submit comments on 
this proposed AD:
     By mail: Federal Aviation Administration (FAA), New 
England Region, Office of the Regional Counsel, Attention: Rules Docket 
No. 2004-NE-10-AD, 12 New England Executive Park, Burlington, MA 01803-
5299.
     By fax: (781) 238-7055.
     By e-mail: 9-ane-adcomment@faa.gov.
    You can get the service information identified in this proposed AD 
from Rolls-Royce Corporation, P.O. Box 420, Indianapolis, IN 46206-
0420; telephone (317) 230-6400; fax (317) 230-4243.
    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:

Comments Invited

    We invite you to submit any written relevant data, views, or 
arguments regarding this proposal. Send your comments to an address 
listed under ADDRESSES. Include ``AD Docket No. 2004-NE-10-AD'' in the 
subject line of your comments. If you want us to acknowledge receipt of 
your mailed comments, send us a self-addressed, stamped postcard with 
the docket number written on it; we will date-stamp your postcard and 
mail it back to you. We specifically invite comments on the overall 
regulatory, economic, environmental, and energy aspects of the proposed 
AD. If a person contacts us verbally, and that contact relates to a 
substantive part of this proposed AD, we will summarize the contact and 
place the summary in the docket. We will consider all comments received 
by the closing date and may amend the proposed AD in light of those 
comments.

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.

Discussion

    On November 22, 2004, we issued AD 2004-24-09, Amendment 39-13885 
(69 FR 69807, December 1, 2004). That AD 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. That AD was the result of 10 
reports of engine power loss with accompanying collapse of the fuel 
nozzle screen, due to fuel contamination. That condition, if not 
corrected, could result in sudden loss of engine power and uncommanded 
shutdown of the engine due to fuel contamination and collapse of the 
screen in the fuel nozzle.

Actions Since AD 2004-24-09 Was Issued

    Since AD 2004-24-09 was issued, we discovered that several RRC and 
Parts Manufacturer Approval (PMA) fuel nozzle part numbers were 
inadvertently left out of the AD. Additionally, we discovered that 
certain RRC fuel nozzles are only identified by their vendor part 
number. Because AD 2004-24-09 defined a serviceable fuel nozzle as a 
nozzle that has a P/N not specified in, or addressed by, that AD, it is 
possible that operators could return to service fuel nozzles, P/Ns 
6874959, 6894610, and 6898531, and then record being in compliance with 
AD 2004-24-09. In those cases, the minimizing of 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, has not 
been achieved. We have added these additional RRC, PMA, and vendor part 
numbers to this proposed AD.

FAA's Determination and Requirements of the Proposed AD

    We have evaluated all pertinent information and identified an 
unsafe condition that is likely to exist or develop on other products 
of this same type design. We are proposing this AD, which would 
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. This proposed AD requires:

[[Page 60454]]

     A onetime inspection of the screens in certain P/N fuel 
nozzles for contamination within 50 operating hours after the effective 
date of the proposed AD; or
     A onetime inspection of the screens in certain P/N fuel 
nozzles for contamination within 150 operating hours after January 5, 
2005, unless already done using AD 2004-24-09; and
     If contamination is found, inspecting and cleaning the 
entire aircraft fuel system, before further flight; and
     Replacing the fuel nozzles listed in this AD with a new 
design fuel nozzle, at the next fuel nozzle overhaul or by June 30, 
2006, whichever occurs first.

Costs of Compliance

    There are about 15,000 RRC 250-B and 250-C series turboshaft and 
turboprop engines of the affected design in the worldwide fleet. We 
estimate that 10,000 engines installed on aircraft of U.S. registry 
would be affected by this proposed AD. We also estimate that it would 
take about one work hour per engine to perform the proposed 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% of the fuel nozzles will be 
overhauled and 20% will be replaced with a new nozzle. Therefore, we 
estimate that the required parts would cost, on average, about $1,200 
per engine. Based on these figures, we estimate the total cost of the 
proposed 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 proposed AD will not have federalism 
implications under Executive Order 13132. This proposed 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 the 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. 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 proposed 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.

The Proposed Amendment

    Under the authority delegated to me by the Administrator, the 
Federal Aviation Administration 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.


Sec.  39.13  [Amended]

    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 
to read as follows:

Rolls-Royce Corporation: Docket No. 2004-NE-10-AD.

Comments Due Date

    (a) The Federal Aviation Administration (FAA) must receive comments 
on this airworthiness directive (AD) action by December 19, 2005.

Affected ADs

    (b) This AD supersedes AD 2004-24-09.

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
-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 60455]]



           Table 2.--Engines Installed On, But Not Limited To
------------------------------------------------------------------------
              Manufacturer                            Model
------------------------------------------------------------------------
Agusta.................................  A109, A109A, A109AII, and
                                          A109C.
Bell Helicopter Textron................  47, 206A, 206B, 206L, 206L-1,
                                          206L-3, 206L-4, 407, and 430.
B-N Group..............................  BN-2T and BN-2T-4R.
Enstrom................................  TH28, 480; and 480B.
Eurocopter Canada Limited..............  BO 105 LS A-3.
Eurocopter France......................  AS355E, AS355F, AS355I, and
                                          AS355F2.
Eurocopter Deutschland.................  BO-105A, BO-105C, BO-105S, and
                                          BO-105LS A-1.
Hiller Aviation........................  FH-1100.
McDonnell Douglas......................  369D, 369E, 369F, 369H, 369HE,
                                          369HM, 369HS, 369FF, and 500N.
Schweizer..............................  TH269D.
SIAI Marchetti s.r.l...................  SF600 and SF600A.
Sikorsky...............................  S-76A.
------------------------------------------------------------------------

Unsafe Condition

    (d) This AD results from 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
Delevan Inc. (PMA)......................           49445             N/A
                                                   47069             N/A
                                                   47101             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) Before further flight, inspect and clean the entire aircraft 
fuel system if you find any contamination on the screen.
    (h) At the next fuel nozzle overhaul after the effective date of 
this AD, or by June 30, 2006, whichever occurs first, 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.

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:

[[Page 60456]]



           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 October 11, 2005.
Ann C. Mollica,
Acting Manager, Engine and Propeller Directorate, Aircraft 
Certification Service.
[FR Doc. 05-20779 Filed 10-17-05; 8:45 am]
BILLING CODE 4910-13-P

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