004-FAA-2003-26-11

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[Federal Register: January 6, 2004 (Volume 69, Number 3)]
[Rules and Regulations]
[Page 494-495]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]
[DOCID:fr06ja04-5]
–––––––––––––––––––––––––––––––––––
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. 2003-NE-26-AD; Amendment 39-13409; AD 2003-26-11]
RIN 2120-AA64
Airworthiness Directives; General Electric Company (GE) CF6-80E1A2 and -80E1A4
Turbofan Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule; request for comments.
–––––––––––––––––––––––––––––––––––
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for General Electric
Company (GE) CF6-80E1A2 and -80E1A4 turbofan engines with left vertical link bolts part number
(P/N) 1304M26P02 installed, and pylon attachment bolts originally torqued to 450-500 lb ft. This AD
requires reducing the torque of pylon attachment bolts, and replacing left vertical link bolts with lifelimited
serialized bolts. This AD results from revised analyses by the airframe manufacturer of loads
on the forward engine mount. We are issuing this AD to prevent engine separation that could result
from a reduction of engine mount structural integrity due to failure of pylon attachment bolts or
vertical link bolts.
DATES: Effective February 5, 2004. The Director of the Federal Register approved the incorporation
by reference of certain publications listed in the regulations as of February 5, 2004.
We must receive any comments on this AD by March 8, 2004.
ADDRESSES: Use one of the following addresses to submit comments on this AD:
• By mail: The Federal Aviation Administration (FAA), New England Region, Office of the
Regional Counsel, Attention: Rules Docket No. 2003-NE-26-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 referenced in this AD from General Electric Company via
Lockheed Martin Technology Services, 10525 Chester Road, Suite C, Cincinnati, Ohio 45215;
telephone (513) 672-8400; fax (513) 672-8422.
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You may examine the AD docket, by appointment, at the FAA, New England Region, Office of
the Regional Counsel, 12 New England Executive Park, Burlington, MA. You may examine the
service information, by appointment, at the FAA, New England Region, Office of the Regional
Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register,
800 North Capitol Street, NW., suite 700, Washington, DC.
FOR FURTHER INFORMATION CONTACT: Karen Curtis, Aerospace Engineer, Engine
Certification Office, FAA, Engine and Propeller Directorate, 12 New England Executive Park,
Burlington, MA 01803-5299; telephone (781) 238-7192; fax (781) 238-7199.
Airbus Industrie has revised their analyses of Airbus A330-200 and A330-300 airplane forward
engine mount loads. The revised analyses predict higher loads than the loads used in the original
certification of the engine. The increased loads, in combination with the originally specified pylon
attachment bolt torque, result in a reduced low-cycle-fatigue (LCF) life capability for the pylon
attachment bolts. The increased load also results in a reduced LCF life capability for the left vertical
link bolts. This AD requires reducing the torque of pylon attachment bolts, and replacing left vertical
link bolts with life-limited serialized bolts. These actions restore the forward engine mount structural
integrity.
Relevant Service Information
We have reviewed and approved the technical contents of GE Alert Service Bulletin No. CF6-
80E1 S/B 72-A0184, Revision 1, dated February 26, 2002, that describes procedures for reducing the
torque on CF6-80E1A2 and -80E1A4 turbofan engine pylon attachment bolts.
FAA's Determination and Requirements of This AD
Although no airplanes that are registered in the United States use these GE CF6-80E1A2 and -
80E1A4 turbofan engines, the possibility exists that the engines could be used on airplanes that are
registered in the United States in the future. The unsafe condition described previously is likely to
exist or develop on other GE CF6-80E1A2 and -80E1A4 turbofan engines of the same type design.
We are issuing this AD to prevent engine separation that could result from a reduction of engine
mount structural integrity due to failure of pylon attachment bolts or vertical link bolts. This AD
requires reducing the torque of pylon attachment bolts, and replacing left vertical link bolts with lifelimited
serialized bolts. You must use the service information described previously to perform the
bolt torque reduction required by this AD.
FAA's Determination of the Effective Date
Since there are currently no domestic operators of GE CF6-80E1A2 and -80E1A4 turbofan
engines, notice and opportunity for public comment before issuing this AD are unnecessary.
Therefore, a situation exists that allows the immediate adoption of this regulation.
Changes to 14 CFR Part 39–Effect on the AD
On July 10, 2002, we issued a new version of 14 CFR part 39 (67 FR 47997, July 22, 2002),
which governs our AD system. This regulation now includes material that relates to special flight
permits, alternative methods of compliance, and altered products. This material previously was
included in each individual AD. Since this material is included in 14 CFR part 39, we will not include
it in future AD actions.
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Comments Invited
This AD is a final rule that involves requirements affecting flight safety and was not preceded by
notice and an opportunity for public comment; however, we invite you to submit any written relevant
data, views, or arguments regarding this AD. Send your comments to an address listed under
ADDRESSES. Include ''AD Docket No. 2003-NE-26-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 rule that might suggest a need to modify it. If a person contacts us verbally, and
that contact relates to a substantive part of this 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 AD in light of those comments.
We are reviewing the writing style we currently use in regulatory documents. We are interested
in your comments on whether the style of this document is clear, and your suggestions to improve the
clarity of our communications with you. You may get more information about plain language at
http://www.faa.gov/language and http://www.plainlanguage.gov.
Examining the 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.
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 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 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. 2003-NE-26-AD'' in your request.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the Administrator, the Federal Aviation
Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows:
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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 airworthiness directive:
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AIRWORTHINESS DIRECTIVE
Aircraft Certification Service
Washington, DC
U.S. Department
of Transportation
Federal Aviation
Administration
We post ADs on the internet at "www.faa.gov"
The following Airworthiness Directive issued by the Federal Aviation Administration in accordance with the provisions of Title 14 of the Code of Federal Regulations (14 CFR) part 39,
applies to an aircraft model of which our records indicate you may be the registered owner. Airworthiness Directives affect aviation safety and are regulations which require immediate
attention. You are cautioned that no person may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the requirements of the Airworthiness
Directive (reference 14 CFR part 39, subpart 39.3).
2003-26-11 General Electric Company: Amendment 39-13409. Docket No. 2003-NE-26-AD.
Effective Date
(a) This airworthiness directive (AD) becomes effective February 5, 2004.
Affected ADs
(b) None.
Applicability
(c) This AD applies to General Electric Company (GE) CF6-80E1A2 and -80E1A4 turbofan
engines with left vertical link bolts part number (P/N) 1304M26P02 installed, and pylon attachment
bolts originally torqued to 450-500 lb ft. These engines are installed on, but not limited to Airbus
Industrie A330-200 and A330-300 airplanes.
Unsafe Condition
(d) This AD is prompted by revised analyses of forward engine mount loads by the airframe
manufacturer. We are issuing this AD to prevent engine separation that could result from a reduction
of engine mount structural integrity due to failure of pylon attachment bolts or vertical link bolts.
Compliance
(e) You are responsible for having the actions required by this AD performed within the
compliance cycles and times specified unless the actions have already been done.
Torque Reduction of Pylon Attachment Bolts
(f) For CF6-80E1A2 engines, reduce the pylon attachment bolt torque on each of the five bolts to
400-450 lb ft, before exceeding 7,160 cycles-since-new (CSN) or before exceeding 5,120 cyclessince-
last-installation (CSLI), whichever is later. Use paragraph 3. of Accomplishment Instructions of
Alert Service Bulletin (ASB) No. CF6-80E1 S/B 72-A0184, Revision 1, dated February 26, 2002, to
reduce the torque.
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(g) For CF6-80E1A4 engines, reduce the pylon attachment bolt torque on each of the five bolts
to 400-450 lb ft, before exceeding 6,520 CSN or before exceeding 4,480 CSLI, whichever is later.
Use paragraph 3. of Accomplishment Instructions of ASB No. CF6-80E1 S/B 72-A0184, Revision 1,
dated February 26, 2002, to reduce the torque.
Replacement of Left Vertical Link Bolts
(h) For CF6-80E1A2 and -80E1A4 turbofan engines, remove the three left vertical link bolts,
P/N 1304M26P02, and replace with three left vertical link bolts, P/N 1304M26P05, at next shop visit.
Bolts P/N 1304M26P05 are serialized and have a calculated life limit published in the Life Limits
section of Chapter 5 of the engine manual.
Definitions
(i) For the purpose of this AD, CSLI is defined as cycles since the engine was last installed on
the pylon.
(j) For the purpose of this AD, next shop visit is defined as induction of the engine into a shop
for any reason.
Alternative Methods of Compliance
(k) The Manager, Engine 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.
Material Incorporated by Reference
(l) You must use GE Alert Service Bulletin No. CF6-80E1 S/B 72-A0184, Revision 1, dated
February 26, 2002, for reducing the bolt torque required by this AD. The Director of the Federal
Register approved the incorporation by reference of this service bulletin in accordance with 5 U.S.C.
552(a) and 1 CFR part 51. You can get a copy from General Electric Company via Lockheed Martin
Technology Services, 10525 Chester Road, Suite C, Cincinnati, Ohio 45215; telephone (513) 672-
8400; fax (513) 672-8422. You can review a copy at the FAA, New England Region, Office of the
Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal
Register, 800 North Capitol Street, NW., suite 700, Washington, DC.
Related Information
(m) The Direction Generale de L'Aviation Civile, which is the airworthiness authority for
France, issued AD 2001-556(B), which pertains to the subject of this AD.
Issued in Burlington, Massachusetts, on December 23, 2003.
Mark C. Fulmer,
Acting Manager, Engine and Propeller Directorate, Aircraft Certification Service.
[FR Doc. 04-144 Filed 1-5-04; 8:45 am]
BILLING CODE 4910-13-P

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