[Federal Register Volume 78, Number 232 (Tuesday, December 3, 2013)]
[Rules and Regulations]
[Pages 72567-72568]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2013-28866]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2013-0499; Directorate Identifier 2013-NE-20-AD;
Amendment 39-17673; AD 2013-23-18]
RIN 2120-AA64
Airworthiness Directives; General Electric Company Turbofan
Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are adopting a new airworthiness directive (AD) for certain
General Electric Company (GE) GE90-110B1 and -115B turbofan engines.
This AD was prompted by multiple events of a leaking variable bypass
valve (VBV) actuator fuel supply tube. This AD requires replacement of
this VBV actuator fuel supply tube with a part eligible for
installation. We are issuing this AD to prevent failure of the affected
fuel supply tube, fuel leakage, engine fire, and damage to the
airplane.
DATES: This AD is effective January 7, 2014.
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 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: Jason Yang, Aerospace Engineer, Engine
Certification Office, FAA, Engine & Propeller Directorate, 12 New
England Executive Park, Burlington, MA 01803; phone: 781-238-7747; fax:
781-238-7199; email: [email protected].
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would apply to the specified products. The
NPRM published in the Federal Register on July, 25, 2013 (78 FR 44899,
July 25, 2013). The NPRM proposed to require replacement of the
affected VBV actuator fuel supply tube, part number 2165M22P01, with a
part eligible for installation.
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.
Agreement With the Proposed AD
The Boeing Company and FedEx Express agreed with the AD as
proposed.
Request To Change the Compliance Time
GE requested that we change the compliance time in this AD from
``at the next shop visit, after the effective date of this AD'' to ``as
soon as possible without effect on revenue service, but before April 1,
2014.'' No justification was provided for the change.
We do not agree. Replacement of the VBV actuator fuel supply tube
at the next shop visit maintains an acceptable level of safety for the
fleet, based on safety risk analysis. We have no data to support that a
more aggressive replacement schedule is required to maintain that
acceptable level of safety. 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
this AD as proposed.
[[Page 72568]]
Costs of Compliance
We estimate that this AD will affect about 59 engines installed on
airplanes of U.S. registry. We also estimate that it will take about
eight hours per engine to replace the VBV actuator fuel supply tube.
The cost of this part is about $14,310. The average labor rate is $85
per hour. Based on these figures, we estimate the cost of this AD on
U.S. operators to be $884,410.
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
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),
(3) Will not affect intrastate aviation in Alaska to the extent
that if 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 adding the following new airworthiness
directive (AD):
2013-23-18 General Electric Company: Amendment 39-17673; Docket No.
FAA-2013-0499; Directorate Identifier 2013-NE-20-AD.
(a) Effective Date
This AD is effective January 7, 2014.
(b) Affected ADs
None.
(c) Applicability
This AD applies to General Electric Company (GE) GE90-110B1 and
-115B turbofan engines with variable bypass valve (VBV) actuator
fuel supply tube, part number (P/N) 2165M22P01, installed.
(d) Unsafe Condition
This AD was prompted by multiple events of a leaking VBV
actuator fuel supply tube. We are issuing this AD to prevent failure
of the affected fuel supply tube, fuel leakage, engine fire, and
damage to the airplane.
(e) Compliance
(1) Comply with this AD within the compliance times specified,
unless already done.
(2) At the next shop visit, after the effective date of this AD,
replace the VBV actuator fuel supply tube, P/N 2165M22P01, with a
part eligible for installation.
(f) Definition
For the purpose of this AD, a shop visit is the induction of an
engine into the shop for maintenance or overhaul. The separation of
engine flanges solely for the purposes of transporting the engine
without subsequent engine maintenance does not constitute an engine
shop visit.
(g) Installation Prohibition
After the effective date of this AD, do not install any VBV
actuator fuel supply tube, P/N 2165M22P01, onto any engine.
(h) Alternative Methods of Compliance (AMOCs)
The Manager, Engine Certification Office, FAA, may approve AMOCs
for this AD. Use the procedures in 14 CFR 39.19 to make your
request.
(i) Related Information
For more information about this AD, contact Jason Yang,
Aerospace Engineer, Engine Certification Office, FAA, 12 New England
Executive Park, Burlington, MA 01803; phone: 781-238-7747; fax: 781-
238-7199; email: [email protected].
(j) Material Incorporated by Reference
None.
Issued in Burlington, Massachusetts, on November 14, 2013.
Frank P. Paskiewicz,
Acting Director, Aircraft Certification Service.
[FR Doc. 2013-28866 Filed 12-2-13; 8:45 am]
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