Airworthiness Directives; General Electric Company Turbofan Engines, 24671-24673 [2013-09650]

Download as PDF erowe on DSK2VPTVN1PROD with RULES Federal Register / Vol. 78, No. 81 / Friday, April 26, 2013 / Rules and Regulations to standards established by the World Organisation for Animal Health (OIE). Reconsideration of the status of the remainder of Italy is beyond the scope of this determination, which addresses APHIS’ evaluation and recognition of the SVD status of the Italian Regions of Lombardia, Emilia-Romagna, Veneto, and Piemonte and the autonomous provinces of Trento and Bolzano. We are willing to work with the European Commission or the Government of Italy, should they request an additional evaluation that considers the SVD status of the remainder of Italy. In order to declare Italy to be free of SVD, we would need to conduct our own evaluation to assess the SVD-status of any additional regions in Italy. The commenter said that Italy has already adopted all the safeguards necessary to avoid the spread of SVD and therefore additional requirements governing the importation of pork or pork products from regions that have been determined to be free of SVD, but that are subject to certain restrictions because of their proximity to or trading relationships with SVD-affected regions, are unnecessary. We disagree with the commenter’s assertion. As discussed in the risk analysis supporting the initial notice of availability, European Union and Italian regulations do not restrict the movement of pork or pork products from regions considered by APHIS to be SVD-affected into SVD-free regions, unless that pork is from swine that have tested positive for SVD or is from swine slaughtered as a result of an SVD outbreak. Therefore, there is the possibility that pork and pork products could be moved from an area considered to be SVD-affected by APHIS into a recognized free region of Italy, and subsequently be exported to the United States. To mitigate this risk, we will apply the restrictions listed in § 94.13, which prohibit the importation of fresh pork or pork products derived from swine originating in regions considered to be SVD-affected, to exports of pork and pork products from the Italian Regions of Lombardia, Emilia-Romagna, Veneto, and Piemonte and the autonomous provinces of Trento and Bolzano. The commenter requested that we provide a timeline concerning implementation of our final decision and action regarding the SVD status of the Italian Regions of Lombardia, Emilia-Romagna, Veneto, and Piemonte and the autonomous provinces of Trento and Bolzano. This final determination establishes the effective date for the action taken by APHIS in regards to the SVD status of Italy as May 28, 2013. VerDate Mar<15>2010 14:45 Apr 25, 2013 Jkt 229001 The initial notice of availability described the regulations in 9 CFR part 94 as governing the importation of certain animals and animal products into the United States in order to prevent the introduction of various communicable diseases, including SVD. The notice of availability further classed the diseases described in 9 CFR part 94 as ‘‘dangerous and destructive communicable diseases of ruminants and swine.’’ The commenter observed that, as the notice of availability was on the subject of SVD, it would be more appropriate to exclude the reference to ruminants to avoid any confusion. The language referenced by the commenter is what we commonly use to characterize the regulations in 9 CFR part 94, which also cover ruminant diseases. We have, however, altered the wording in this final determination in order to make our focus clear. In our December 2012 notice of availability we stated that we would consider any comments received and announce our decision regarding the disease status of the Italian Regions of Lombardia, Emilia-Romagna, Veneto, and Piemonte and the autonomous provinces of Trento and Bolzano with respect to SVD and the import status of pork and pork products. Based on the findings of our evaluation and the absence of comments that would lead us to reconsider those findings, we are announcing our determination to add the Italian Regions of Lombardia, Emilia-Romagna, Veneto, and Piemonte and the autonomous provinces of Trento and Bolzano to the list of regions declared free of SVD and to the list of regions that have been determined to be free of SVD, but that are subject to certain restrictions because of their proximity to or trading relationships with SVD-affected regions. These lists are available on the APHIS Web site at http://www.aphis.usda.gov/ import_export/animals/animal_import/ animal_imports_svd.shtml. Authority: 7 U.S.C. 450, 7701–7772, 7781– 7786, and 8301–8317; 21 U.S.C. 136 and 136a; 31 U.S.C. 9701; 7 CFR 2.22, 2.80, and 371.4. Done in Washington, DC, this 22nd day of April 2013. Kevin Shea, Acting Administrator, Animal and Plant Health Inspection Service. [FR Doc. 2013–09929 Filed 4–25–13; 8:45 am] BILLING CODE 3410–34–P PO 00000 Frm 00007 Fmt 4700 Sfmt 4700 24671 DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2012–0817; Directorate Identifier 99–NE–24–AD; Amendment 39– 17438; AD 2013–08–20] RIN 2120–AA64 Airworthiness Directives; General Electric Company Turbofan Engines Federal Aviation Administration (FAA), DOT. ACTION: Final rule. AGENCY: We are superseding an existing airworthiness directive (AD) for certain General Electric Company (GE) CF6–80C2 series turbofan engines. That AD currently requires replacement of the fuel tube connecting the flowmeter to the integrated drive generator (IDG) fuel-oil cooler and the fuel tube(s) connecting the main engine control (MEC) or hydromechanical (HMU) to the flowmeter, with improved fuel tubes. This new AD requires the same actions, requires installation of a new simplified one-piece supporting bracket, adds an engine model, alters the list of affected part numbers (P/Ns), changes the replacement schedule, and revises our estimated cost of compliance. This AD was prompted by several additional reports of fuel leaks and two reports of engine fire due to improper assembly of supporting brackets on the fuel tube connecting the flowmeter to the IDG fuel-oil cooler. We are issuing this AD to prevent high-pressure fuel leaks caused by improper seating of fuel tube flanges, which could result in an engine fire and damage to the airplane. DATES: This AD is effective May 31, 2013. SUMMARY: For service information identified in this AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513–552–3272; email: geae.aoc@ge.com. You may view the referenced service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. ADDRESSES: Examining the AD Docket You may examine the AD docket on the Internet at http:// www.regulations.gov; or in person at the Docket Management Facility between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this AD, the regulatory E:\FR\FM\26APR1.SGM 26APR1 24672 Federal Register / Vol. 78, No. 81 / Friday, April 26, 2013 / Rules and Regulations evaluation, any comments received, and other information. The address for the Docket Office (phone: 800–647–5527) is Document Management Facility, U.S. Department of Transportation, Docket Operations, M–30, West Building Ground Floor, Room W12–140, 1200 New Jersey Avenue SE., Washington, DC 20590. FOR FURTHER INFORMATION CONTACT: Kasra Sharifi, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7773; fax: 781–238 7199; email: kasra.sharifi@faa.gov. SUPPLEMENTARY INFORMATION: Discussion On February 29, 2000, the Office of the Federal Register (OFR) published AD 2000–04–14, Amendment 39–11597 (65 FR 10698). That AD applies to the specified products, and required replacement of the fuel tube connecting the flowmeter to the IDG fuel-oil cooler and the fuel tube(s) connecting the MEC or HMU to the flowmeter with improved fuel tubes. On August 13, 2012, the OFR published a notice of proposed rulemaking (NPRM) (77 FR 48110) to supersede AD 2000–04–14 (65 FR 10698, February 29, 2000). The NPRM proposed to require replacement of the fuel tubes connected to the fuel flowmeter and to install a new simplified one-piece bracket to eliminate improper assembly. Thereafter, based on comments received in response to the NPRM, we issued a supplemental notice of proposed rulemaking (SNPRM) to amend 14 CFR part 39 to change the proposed AD further. The SNPRM published in the Federal Register on December 31, 2012 (77 FR 76977). The SNPRM proposed to require the same actions as the original AD, to add an engine model, alter the list of affected P/Ns, change the replacement schedule, and revise our estimated cost of compliance. We agree. We changed the AD to identify the spray shield P/Ns in the AD. Request To Add Engine Shop Visit Definition Atlas Air requested that we add a definition for engine shop visit to clarify the compliance. We agree. We changed the AD to add a definition for shop visit. The definition states ‘‘For the purpose of this AD, an engine shop visit is the induction of an engine into the shop for maintenance involving separation of pairs of major mating engine flanges (lettered flanges), except that the separation of engine flanges solely for the purposes of transporting the engine without subsequent engine maintenance does not constitute an engine shop visit.’’ Request To Provide Instructions for Installation American Airlines requested that we provide instructions for installation of the mandated P/Ns to prevent the unsafe condition, or, require corrections to the Boeing and GE guidance documents before the AD is issued. They cite discrepancies in the guidance documents. We do not agree. An operator may use any method, technique, or practice acceptable to the Administrator when performing maintenance. We did not change the AD. We recognize that discrepancies may exist in manufacturers’ service information. However, correcting errors in manufacturers’ service information is not within the scope of this AD. We did not change the AD. erowe on DSK2VPTVN1PROD with RULES Comments We gave the public the opportunity to participate in developing this AD. The following presents the comments received on the proposal and the FAA’s response to each comment. Request To Address Another Possible Unsafe Condition American Airlines requested that we also address another possible unsafe condition caused by improper assembly of the two-piece spray shield bracket on the forward end of the flowmeter transmitter. The commenter states that this bracket has the same potential to be improperly assembled as the subject bracket of this AD. We do not agree. To-date, we have received no reports of improper assembly or fuel leaks occurring at that location. We did not change the AD. Request To Identify Spray Shield Part Numbers (P/Ns) Lufthansa Technik and Air France Industries requested that we identify which P/Ns are the spray shield P/Ns. As-written, the applicability does not distinguish between the tube P/Ns and the spray shield P/Ns. Conclusion We reviewed the relevant data, considered 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 minor changes: VerDate Mar<15>2010 14:45 Apr 25, 2013 Jkt 229001 PO 00000 Frm 00008 Fmt 4700 Sfmt 4700 • Are consistent with the intent that was proposed in the SNPRM (77 FR 76977, December 31, 2012) for correcting the unsafe condition; and • Do not add any additional burden upon the public than was already proposed in the SNPRM (77 FR 76977, December 31, 2012). We also determined that these changes will not increase the economic burden on any operator or increase the scope of the AD. Costs of Compliance We estimate that this AD will affect 926 GE CF6–80C2 engines installed on airplanes of U.S. registry. We also estimate that one hour will be required per engine to accomplish the actions required by this AD. The average labor rate is $85 per hour. We also estimate that the required parts will cost about $370 per engine. We estimate that the cost of the idle leak check is $1,000 per engine. Based on these figures, we estimate the total cost of the AD to U.S. operators is $3,275,231. 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, E:\FR\FM\26APR1.SGM 26APR1 Federal Register / Vol. 78, No. 81 / Friday, April 26, 2013 / Rules and Regulations (2) Is not a ‘‘significant rule’’ under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska to the extent that it justifies making a regulatory distinction, and (4) Will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of the Regulatory Flexibility Act. 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 FAA amends 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 airworthiness directive (AD) 2000–04–14, Amendment 39–11597 (65 FR 10698, February 29, 2000), and adding the following new AD: ■ 2013–08–20 General Electric Company: Amendment 39–17438; Docket No. FAA–2012–0817; Directorate Identifier 99–NE–24–AD. (a) Effective Date This AD is effective May 31, 2013. (b) Affected ADs This AD supersedes AD 2000–04–14, Amendment 39–11597 (65 FR 10698, February 29, 2000). erowe on DSK2VPTVN1PROD with RULES (c) Applicability This AD applies to all General Electric Company (GE) CF6–80C2 A1/A2/A3/A5/A8/ A5F/B1/B2/B4/B5F/B6/B1F/B2F/B4F/B6F/ B7F/D1F turbofan engines with any of the following installed: (1) Fuel tube, part number (P/N) 1321M42G01, 1334M88G01, 1374M30G01, or 1383M12G01. (2) Spray shield, P/N 1606M57G01, 1606M57G03, or 1775M61G01. (3) Supporting bracket, P/N 1321M88P001A. (d) Unsafe Condition This AD was prompted by several additional reports of fuel leaks and two reports of engine fire due to improper assembly of supporting brackets on the fuel tube connecting the flowmeter to the integrated drive generator (IDG) fuel-oil cooler. We are issuing this AD to prevent high-pressure fuel leaks caused by improper seating of fuel tube flanges, which could VerDate Mar<15>2010 14:45 Apr 25, 2013 Jkt 229001 result in an engine fire and damage to the airplane. (e) Compliance Comply with this AD within the compliance times specified, unless already done. (f) Replacement After the effective date of this AD, if the fuel tubes are disconnected for any reason, or at the next engine shop visit, whichever occurs first, replace the fuel tubes and brackets with improved tubes and brackets eligible for installation. For on-wing maintenance, replace only tubes and brackets that have been disconnected. Do the following: (1) Replace the fuel flowmeter to IDG fueloil cooler fuel tube, P/N 1321M42G01, with a part eligible for installation. (2) For engines with Power Management Controls, replace the main engine control to fuel flowmeter fuel tube, P/N 1334M88G01, with a part eligible for installation. (3) For engines with full authority digital electronic controls, replace the hydromechanical unit to fuel flowmeter fuel tubes, P/Ns 1383M12G01 and 1374M30G01, with a part eligible for installation. (4) Replace supporting bracket, P/N 1321M88P001A, and spray shields, P/Ns 1606M57G01, 1606M57G03, and 1775M61G01 with one-piece supporting bracket, P/N 2021M83G01. (5) Perform an idle leak check after accomplishing paragraphs (f)(1), (f)(2), (f)(3), or (f)(4), or any combination thereof. (g) Prohibition After the effective date of this AD, do not install any of the following parts into any GE CF6–80C2 series turbofan engines: fuel tubes P/Ns 1321M42G01, 1334M88G01, 1374M30G01, and 1383M12G01, supporting bracket P/N 1321M88P001A, and spray shields P/Ns 1606M57G01, 1606M57G03, and 1775M61G01. (h) Definition For the purpose of this AD, an engine shop visit is the induction of an engine into the shop for maintenance involving separation of pairs of major mating engine flanges (lettered flanges), except that the separation of engine flanges solely for the purposes of transporting the engine without subsequent engine maintenance does not constitute an engine shop visit. (i) Alternative Methods of Compliance (AMOCs) The Manager, Engine Certification Office, FAA, may approve AMOCs for this AD. Use the procedures found in 14 CFR 39.19 to make your request. (j) Related Information (1) For more information about this AD, contact Kasra Sharifi, Aerospace Engineer, Engine Certification Office, FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA 01803; phone: 781–238–7773; fax: 781–238 7199; email: kasra.sharifi@faa.gov. (2) For guidance on the replacements, refer to GE Alert Service Bulletins CF6–80C2 SB PO 00000 Frm 00009 Fmt 4700 Sfmt 4700 24673 73–A0224, CF6–80C2 SB 73–A0231, CF6– 80C2 SB 73–A0401, and CF6–80C2 SB 73– 0242. (3) For service information identified in this AD, contact General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215, phone: 513–552–3272; email: geae.aoc@ge.com. You may view this service information at the FAA, Engine & Propeller Directorate, 12 New England Executive Park, Burlington, MA. For information on the availability of this material at the FAA, call 781–238–7125. (k) Material Incorporated by Reference None. Issued in Burlington, Massachusetts, on April 16, 2013. Frank P. Paskiewicz, Acting Director, Aircraft Certification Service. [FR Doc. 2013–09650 Filed 4–25–13; 8:45 am] BILLING CODE 4910–13–P DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA–2013–0333; Directorate Identifier 2013–NM–080–AD; Amendment 39–17436; AD 2013–08–12] RIN 2120–AA64 Airworthiness Directives; The Boeing Company Airplanes Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. AGENCY: We are superseding an existing airworthiness directive (AD) for The Boeing Company Model 787–8 airplanes. That AD currently requires modification of the battery system, or other actions. This AD requires installing main and auxiliary power unit (APU) battery enclosures and environmental control system (ECS) ducts; and replacing the main battery, APU battery, and their respective battery chargers. This AD also requires revising the maintenance program to include an airworthiness limitation. This AD also revises the applicability by removing airplanes on which these changes have been incorporated in production prior to delivery. This AD was prompted by recent incidents involving lithium ion battery failures that resulted in release of flammable electrolytes, heat damage, and smoke on two Model 787–8 airplanes. We are issuing this AD to minimize the occurrence of battery cell failures and propagation of such failures to other cells and to contain any flammable electrolytes, heat, and smoke released SUMMARY: E:\FR\FM\26APR1.SGM 26APR1

Agencies

[Federal Register Volume 78, Number 81 (Friday, April 26, 2013)]
[Rules and Regulations]
[Pages 24671-24673]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-09650]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2012-0817; Directorate Identifier 99-NE-24-AD; 
Amendment 39-17438; AD 2013-08-20]
RIN 2120-AA64


Airworthiness Directives; General Electric Company Turbofan 
Engines

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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

SUMMARY: We are superseding an existing airworthiness directive (AD) 
for certain General Electric Company (GE) CF6-80C2 series turbofan 
engines. That AD currently requires replacement of the fuel tube 
connecting the flowmeter to the integrated drive generator (IDG) fuel-
oil cooler and the fuel tube(s) connecting the main engine control 
(MEC) or hydromechanical (HMU) to the flowmeter, with improved fuel 
tubes. This new AD requires the same actions, requires installation of 
a new simplified one-piece supporting bracket, adds an engine model, 
alters the list of affected part numbers (P/Ns), changes the 
replacement schedule, and revises our estimated cost of compliance. 
This AD was prompted by several additional reports of fuel leaks and 
two reports of engine fire due to improper assembly of supporting 
brackets on the fuel tube connecting the flowmeter to the IDG fuel-oil 
cooler. We are issuing this AD to prevent high-pressure fuel leaks 
caused by improper seating of fuel tube flanges, which could result in 
an engine fire and damage to the airplane.

DATES: This AD is effective May 31, 2013.

ADDRESSES: For service information identified in this AD, contact 
General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, 
Cincinnati, OH 45215, phone: 513-552-3272; email: geae.aoc@ge.com. You 
may view the referenced service information at the FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA. 
For information on the availability of this material at the FAA, call 
781-238-7125.

Examining the AD Docket

    You may examine the AD docket on the Internet at http://www.regulations.gov; or in person at the Docket Management Facility 
between 9 a.m. and 5 p.m., Monday through Friday, except Federal 
holidays. The AD docket contains this AD, the regulatory

[[Page 24672]]

evaluation, any comments received, and other information. The address 
for the Docket Office (phone: 800-647-5527) is Document Management 
Facility, U.S. Department of Transportation, Docket Operations, M-30, 
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Kasra Sharifi, Aerospace Engineer, 
Engine Certification Office, FAA, Engine & Propeller Directorate, 12 
New England Executive Park, Burlington, MA 01803; phone: 781-238-7773; 
fax: 781-238 7199; email: kasra.sharifi@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    On February 29, 2000, the Office of the Federal Register (OFR) 
published AD 2000-04-14, Amendment 39-11597 (65 FR 10698). That AD 
applies to the specified products, and required replacement of the fuel 
tube connecting the flowmeter to the IDG fuel-oil cooler and the fuel 
tube(s) connecting the MEC or HMU to the flowmeter with improved fuel 
tubes.
    On August 13, 2012, the OFR published a notice of proposed 
rulemaking (NPRM) (77 FR 48110) to supersede AD 2000-04-14 (65 FR 
10698, February 29, 2000). The NPRM proposed to require replacement of 
the fuel tubes connected to the fuel flowmeter and to install a new 
simplified one-piece bracket to eliminate improper assembly. 
Thereafter, based on comments received in response to the NPRM, we 
issued a supplemental notice of proposed rulemaking (SNPRM) to amend 14 
CFR part 39 to change the proposed AD further. The SNPRM published in 
the Federal Register on December 31, 2012 (77 FR 76977).
    The SNPRM proposed to require the same actions as the original AD, 
to add an engine model, alter the list of affected P/Ns, change the 
replacement schedule, and revise our estimated cost of compliance.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the proposal 
and the FAA's response to each comment.

Request To Identify Spray Shield Part Numbers (P/Ns)

    Lufthansa Technik and Air France Industries requested that we 
identify which P/Ns are the spray shield P/Ns. As-written, the 
applicability does not distinguish between the tube P/Ns and the spray 
shield P/Ns.
    We agree. We changed the AD to identify the spray shield P/Ns in 
the AD.

Request To Add Engine Shop Visit Definition

    Atlas Air requested that we add a definition for engine shop visit 
to clarify the compliance.
    We agree. We changed the AD to add a definition for shop visit. The 
definition states ``For the purpose of this AD, an engine shop visit is 
the induction of an engine into the shop for maintenance involving 
separation of pairs of major mating engine flanges (lettered flanges), 
except that the separation of engine flanges solely for the purposes of 
transporting the engine without subsequent engine maintenance does not 
constitute an engine shop visit.''

Request To Provide Instructions for Installation

    American Airlines requested that we provide instructions for 
installation of the mandated P/Ns to prevent the unsafe condition, or, 
require corrections to the Boeing and GE guidance documents before the 
AD is issued. They cite discrepancies in the guidance documents.
    We do not agree. An operator may use any method, technique, or 
practice acceptable to the Administrator when performing maintenance. 
We did not change the AD.
    We recognize that discrepancies may exist in manufacturers' service 
information. However, correcting errors in manufacturers' service 
information is not within the scope of this AD. We did not change the 
AD.

Request To Address Another Possible Unsafe Condition

    American Airlines requested that we also address another possible 
unsafe condition caused by improper assembly of the two-piece spray 
shield bracket on the forward end of the flowmeter transmitter. The 
commenter states that this bracket has the same potential to be 
improperly assembled as the subject bracket of this AD.
    We do not agree. To-date, we have received no reports of improper 
assembly or fuel leaks occurring at that location. We did not change 
the AD.

Conclusion

    We reviewed the relevant data, considered 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 minor changes:
     Are consistent with the intent that was proposed in the 
SNPRM (77 FR 76977, December 31, 2012) for correcting the unsafe 
condition; and
     Do not add any additional burden upon the public than was 
already proposed in the SNPRM (77 FR 76977, December 31, 2012).
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of the AD.

Costs of Compliance

    We estimate that this AD will affect 926 GE CF6-80C2 engines 
installed on airplanes of U.S. registry. We also estimate that one hour 
will be required per engine to accomplish the actions required by this 
AD. The average labor rate is $85 per hour. We also estimate that the 
required parts will cost about $370 per engine. We estimate that the 
cost of the idle leak check is $1,000 per engine. Based on these 
figures, we estimate the total cost of the AD to U.S. operators is 
$3,275,231.

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,

[[Page 24673]]

    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska to the extent 
that it justifies making a regulatory distinction, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

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 FAA 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 airworthiness directive (AD) 
2000-04-14, Amendment 39-11597 (65 FR 10698, February 29, 2000), and 
adding the following new AD:

2013-08-20 General Electric Company: Amendment 39-17438; Docket No. 
FAA-2012-0817; Directorate Identifier 99-NE-24-AD.

(a) Effective Date

    This AD is effective May 31, 2013.

(b) Affected ADs

    This AD supersedes AD 2000-04-14, Amendment 39-11597 (65 FR 
10698, February 29, 2000).

(c) Applicability

    This AD applies to all General Electric Company (GE) CF6-80C2 
A1/A2/A3/A5/A8/A5F/B1/B2/B4/B5F/B6/B1F/B2F/B4F/B6F/B7F/D1F turbofan 
engines with any of the following installed:
    (1) Fuel tube, part number (P/N) 1321M42G01, 1334M88G01, 
1374M30G01, or 1383M12G01.
    (2) Spray shield, P/N 1606M57G01, 1606M57G03, or 1775M61G01.
    (3) Supporting bracket, P/N 1321M88P001A.

(d) Unsafe Condition

    This AD was prompted by several additional reports of fuel leaks 
and two reports of engine fire due to improper assembly of 
supporting brackets on the fuel tube connecting the flowmeter to the 
integrated drive generator (IDG) fuel-oil cooler. We are issuing 
this AD to prevent high-pressure fuel leaks caused by improper 
seating of fuel tube flanges, which could result in an engine fire 
and damage to the airplane.

(e) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(f) Replacement

    After the effective date of this AD, if the fuel tubes are 
disconnected for any reason, or at the next engine shop visit, 
whichever occurs first, replace the fuel tubes and brackets with 
improved tubes and brackets eligible for installation. For on-wing 
maintenance, replace only tubes and brackets that have been 
disconnected. Do the following:
    (1) Replace the fuel flowmeter to IDG fuel-oil cooler fuel tube, 
P/N 1321M42G01, with a part eligible for installation.
    (2) For engines with Power Management Controls, replace the main 
engine control to fuel flowmeter fuel tube, P/N 1334M88G01, with a 
part eligible for installation.
    (3) For engines with full authority digital electronic controls, 
replace the hydromechanical unit to fuel flowmeter fuel tubes, P/Ns 
1383M12G01 and 1374M30G01, with a part eligible for installation.
    (4) Replace supporting bracket, P/N 1321M88P001A, and spray 
shields, P/Ns 1606M57G01, 1606M57G03, and 1775M61G01 with one-piece 
supporting bracket, P/N 2021M83G01.
    (5) Perform an idle leak check after accomplishing paragraphs 
(f)(1), (f)(2), (f)(3), or (f)(4), or any combination thereof.

(g) Prohibition

    After the effective date of this AD, do not install any of the 
following parts into any GE CF6-80C2 series turbofan engines: fuel 
tubes P/Ns 1321M42G01, 1334M88G01, 1374M30G01, and 1383M12G01, 
supporting bracket P/N 1321M88P001A, and spray shields P/Ns 
1606M57G01, 1606M57G03, and 1775M61G01.

(h) Definition

    For the purpose of this AD, an engine shop visit is the 
induction of an engine into the shop for maintenance involving 
separation of pairs of major mating engine flanges (lettered 
flanges), except that the separation of engine flanges solely for 
the purposes of transporting the engine without subsequent engine 
maintenance does not constitute an engine shop visit.

(i) Alternative Methods of Compliance (AMOCs)

    The Manager, Engine Certification Office, FAA, may approve AMOCs 
for this AD. Use the procedures found in 14 CFR 39.19 to make your 
request.

(j) Related Information

    (1) For more information about this AD, contact Kasra Sharifi, 
Aerospace Engineer, Engine Certification Office, FAA, Engine & 
Propeller Directorate, 12 New England Executive Park, Burlington, MA 
01803; phone: 781-238-7773; fax: 781-238 7199; email: 
kasra.sharifi@faa.gov.
    (2) For guidance on the replacements, refer to GE Alert Service 
Bulletins CF6-80C2 SB 73-A0224, CF6-80C2 SB 73-A0231, CF6-80C2 SB 
73-A0401, and CF6-80C2 SB 73-0242.
    (3) For service information identified in this AD, contact 
General Electric Company, GE-Aviation, Room 285, 1 Neumann Way, 
Cincinnati, OH 45215, phone: 513-552-3272; email: geae.aoc@ge.com. 
You may view this service information at the FAA, Engine & Propeller 
Directorate, 12 New England Executive Park, Burlington, MA. For 
information on the availability of this material at the FAA, call 
781-238-7125.

(k) Material Incorporated by Reference

    None.

    Issued in Burlington, Massachusetts, on April 16, 2013.
Frank P. Paskiewicz,
Acting Director, Aircraft Certification Service.
[FR Doc. 2013-09650 Filed 4-25-13; 8:45 am]
BILLING CODE 4910-13-P