[Federal Register Volume 76, Number 136 (Friday, July 15, 2011)]
[Rules and Regulations]
[Pages 41659-41662]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2011-17404]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2010-1158; Directorate Identifier 2010-NM-125-AD;
Amendment 39-16750; AD 2011-15-03]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 747 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: We are superseding an existing airworthiness directive (AD)
that applies to the products listed above. That AD currently requires
repetitive inspections to detect damage of the sleeving and wire
bundles of the boost pumps of the numbers 1 and 4 main fuel tanks, and
of the auxiliary tank jettison pumps (if installed); replacement of any
damaged sleeving with new sleeving; and repair or replacement of any
damaged wires with new wires. For airplanes on which any burned wires
are found, that AD also requires an inspection to detect damage of the
conduit, and replacement of any damaged conduit with a serviceable
conduit. This new AD reduces the initial compliance time and repetitive
inspection interval in the existing AD. This AD was prompted by fleet
information indicating that the repetitive inspection interval in the
existing AD is too long because excessive chafing of the sleeving
continues to occur much earlier than expected between scheduled
inspections. We are issuing this AD to detect and correct abrasion of
the Teflon sleeving and wires in the bundles of the fuel boost pumps
for the numbers 1 and 4 main fuel tanks and of the auxiliary tank
jettison pumps (if installed), which could result in electrical arcing
between the wires and aluminum conduit and consequent fire or explosion
of the fuel tank.
DATES: This AD is effective August 19, 2011.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of August 19,
2011.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone 206-
544-5000, extension 1, fax 206-766-5680; e-mail [email protected];
Internet https://www.myboeingfleet.com. You may review copies of the
referenced service information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue, SW., Renton, Washington 98057-3356. For
information on the availability of this material at the FAA, call 425-
227-1221.
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
[[Page 41660]]
New Jersey Avenue, SE., Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Tung Tran, Aerospace Engineer,
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue, SW., Renton, Washington 98057-3356; telephone
(425) 917-6505; fax (425) 917-6590.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede an airworthiness directive (AD) 97-26-07,
Amendment 39-10250 (62 FR 65352, December 12, 1997). That AD applies to
the specified products. The NPRM published in the Federal Register on
December 14, 2010 (75 FR 77793). That NPRM proposed to continue to
require repetitive inspections to detect damage of the sleeving and
wire bundles of the boost pumps of the numbers 1 and 4 main fuel tanks,
and of the auxiliary tank jettison pumps (if installed); replacement of
any damaged sleeving with new sleeving; and repair or replacement of
any damaged wires with new wires. For airplanes on which any burned
wires are found, that NPRM also proposed to continue to require an
inspection to detect damage of the conduit, and replacement of any
damaged conduit with a serviceable conduit. That NPRM proposed to
reduce the initial compliance time and repetitive inspection interval
in the existing AD.
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 Change Heading for Restated Requirements
United Airlines (UA) asked that we change the heading titled
``Restatement of Requirements of AD 96-26-06, Amendment 39-9870,''
which precedes paragraph (g) of the NPRM, to ``Restatement of
Requirements of AD 97-26-07, Amendment 39-10250. UA pointed out that AD
97-26-07 superseded AD 96-26-06.
We agree with UA for the reason provided. Although certain
requirements in AD 96-26-06 are carried over in AD 97-26-07--and in
this AD--those requirements are identified by the AD number within the
applicable paragraphs. We have changed the heading preceding paragraph
(g) of this AD accordingly.
Request To Add Approved Alternate Method of Compliance
UA asked that Boeing Alert Service Bulletin 747-28A2204, Revision
2, dated September 1, 2005, be included in paragraphs (g), (i), (j),
and (k) of the NPRM. UA stated that Boeing Alert Service Bulletin 747-
28A2204, Revision 2, dated September 1, 2005, was approved as an
alternative method of compliance (AMOC) to the requirements of
paragraph (a) of AD 97-26-07.
We partially agree with UA. We agree that Revision 2, dated
September 1, 2005, of Boeing Alert Service Bulletin 747-28A2204, was
reviewed by the FAA, and approved as an AMOC to the requirements of
paragraph (a) of AD 97-26-07. We do not agree that Boeing Alert Service
Bulletin 747-28A2204, Revision 2, dated September 1, 2005, should be
added to the requested paragraphs because those paragraphs are part of
the restatement of the requirements of AD 97-26-07. However, we have
added a new paragraph (p) to this AD (and reidentified subsequent
paragraphs) to give operators credit for using Boeing Alert Service
Bulletin 747-28A2204, Revision 2, dated September 1, 2005, to
accomplish the specified actions.
Request To Include Terminating Action
UA asked that terminating action be included in the NPRM. UA stated
that it believes Boeing is developing a solution that would terminate
the inspections required by the NPRM.
We acknowledge the comment from UA. However, Boeing has not
submitted a revised service bulletin with terminating action for the
repetitive inspections. We are aware that Boeing is developing a
solution to the wire chafing issue, but until a modification is
approved and available we are unable to reference it in the AD.
However, under the provisions of paragraph (q) of this AD, we will
consider requests for accomplishing a terminating modification if data
are submitted to substantiate that it would provide an acceptable level
of safety. We have made no change to the AD in this regard.
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 changes will neither increase the economic burden on any operator
nor increase the scope of the AD.
Costs of Compliance
We estimate that this AD affects 215 airplanes of U.S. registry.
The new requirements of this AD add no additional economic burden. The
current costs for this AD are repeated below for the convenience of
affected operators.
The actions that are required by AD 97-26-07 and retained in this
AD take about 4 work-hours per airplane, at an average labor rate of
$85 per work-hour. Based on these figures, the estimated cost of the
currently required actions is $73,100, or $340 per airplane, per
inspection cycle.
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, 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.
[[Page 41661]]
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)
97-26-07, Amendment 39-10250 (62 FR 65352, December 12, 1997), and
adding the following new AD:
2011-15-03 The Boeing Company: Amendment 39-16750; Docket No. FAA-
2010-1158; Directorate Identifier 2010-NM-125-AD.
Effective Date
(a) This AD is effective August 19, 2011.
Affected ADs
(b) This AD supersedes AD 97-26-07, Amendment 39-10250.
Applicability
(c) This AD applies to all The Boeing Company Model 747-100, -
100B, -100B SUD, -200B, -200C, -200F, -300, -400, -400D, -400F,
747SR, and 747SP series airplanes, certificated in any category.
Subject
(d) Air Transport Association (ATA) of America Code 28: Fuel.
Unsafe Condition
(e) This AD was prompted by fleet information indicating that
the repetitive inspection interval in the existing AD is too long
because excessive chafing of the sleeving continues to occur much
earlier than expected between scheduled inspections. The Federal
Aviation Administration is issuing this AD to detect and correct
abrasion of the Teflon sleeving and wires in the bundles of the fuel
boost pumps for the numbers 1 and 4 main fuel tanks and of the
auxiliary tank jettison pumps (if installed), which could result in
electrical arcing between the wires and aluminum conduit and
consequent fire or explosion of the fuel tank.
Compliance
(f) You are responsible for having the actions required by this
AD performed within the compliance times specified, unless the
actions have already been done.
Restatement of Requirements of AD 97-26-07, Amendment 39-10250
Inspections/Repair or Replace if Necessary
(g) Perform an initial inspection to detect damage of the
sleeving and wire bundles of the forward and aft boost pumps of the
numbers 1 and 4 main fuel tanks, and of the wire bundles of the
auxiliary tank jettison pumps (if installed), in accordance with
Boeing Alert Service Bulletin 747-28A2204, dated December 19, 1996;
Boeing Service Bulletin 747-28A2204, Revision 1, dated October 30,
1997; or Boeing Alert Service Bulletin 747-28A2204, Revision 3,
dated March 11, 2010; at the time specified in paragraph (g)(1) or
(g)(2) of this AD, as applicable. After the effective date of this
AD, only Revision 3 of Boeing Alert Service Bulletin 747-28A2204 may
be used.
(1) For airplanes having line numbers 001 through 432 inclusive:
Inspect within 120 days after January 21, 1997 (the effective date
of AD 96-26-06, amendment 39-9870, which was superseded by AD 97-26-
07).
(2) For airplanes having line numbers 433 and subsequent:
Inspect at the later of the times specified in paragraphs (g)(2)(i)
or (g)(2)(ii) of this AD.
(i) Prior to the accumulation of 20,000 flight cycles or 60,000
flight hours, whichever occurs first; or
(ii) Within 120 days after December 29, 1997 (the effective date
of AD 97-26-07).
(h) Repeat the inspection required by paragraph (g) of this AD
at intervals not to exceed 20,000 flight cycles or 60,000 flight
hours since the last inspection, whichever occurs first, until the
first inspection required by paragraph (n) of this AD has been
accomplished.
(i) If any damaged sleeving is found, prior to further flight,
replace the sleeving with new sleeving, in accordance with Boeing
Alert Service Bulletin 747-28A2204, dated December 19, 1996; Boeing
Service Bulletin 747-28A2204, Revision 1, dated October 30, 1997; or
Boeing Alert Service Bulletin 747-28A2204, Revision 3, dated March
11, 2010. After the effective date of this AD, only Revision 3 of
Boeing Alert Service Bulletin 747-28A2204 may be used.
(j) If any damaged wire is found, prior to further flight,
repair or replace the wire with a new wire, in accordance with
Boeing Alert Service Bulletin 747-28A2204, dated December 19, 1996,
Boeing Service Bulletin 747-28A2204, Revision 1, dated October 30,
1997; or Boeing Alert Service Bulletin 747-28A2204, Revision 3,
dated March 11, 2010. After the effective date of this AD, only
Revision 3 of Boeing Alert Service Bulletin 747-28A2204 may be used.
(k) If any burned wire is found, prior to further flight,
perform an inspection to detect damage of the conduit, in accordance
with Boeing Alert Service Bulletin 747-28A2204, dated December 19,
1996; Boeing Service Bulletin 747-28A2204, Revision 1, dated October
30, 1997; or Boeing Alert Service Bulletin 747-28A2204, Revision 3,
dated March 11, 2010. If any damage is found, prior to further
flight, replace the conduit with a serviceable conduit, in
accordance with Boeing Alert Service Bulletin 747-28A2204, dated
December 19, 1996; Boeing Service Bulletin 747-28A2204, Revision 1,
dated October 30, 1997; or Boeing Alert Service Bulletin 747-
28A2204, Revision 3, dated March 11, 2010. After the effective date
of this AD, only Revision 3 of Boeing Alert Service Bulletin 747-
28A2204 may be used.
(l) For airplanes having line numbers 433 and subsequent: Within
14 days after accomplishing the initial inspection required by
paragraph (g) of this AD, submit a report of any damaged sleeving
(i.e., holes, breaks, cuts, splits), damaged wire (i.e., worn or
cracked insulation, exposed conductor, indication of arcing/
burning), or damaged conduit to the Manager, Seattle Aircraft
Certification Office (ACO), FAA, Transport Airplane Directorate,
1601 Lind Avenue, SW., Renton, WA 98057-3356; fax (425) 227-1181.
The report shall include the information specified in paragraphs
(l)(1), (l)(2), (l)(3), (l)(4), and (l)(5) of this AD. Information
collection requirements contained in this regulation have been
approved by the Office of Management and Budget (OMB) under the
provisions of the Paperwork Reduction Act of 1980 (44 U.S.C. 3501 et
seq.) and have been assigned OMB Control Number 2120-0056.
(1) The airplane serial number.
(2) The total hours' time-in-service accumulated on the
airplane.
(3) The total number of flight cycles accumulated on the
airplane.
(4) A description of any damage found.
(5) The location of where the damaged part was installed.
(m) For airplanes having line numbers 433 and subsequent: Within
14 days after accomplishing the initial inspection required by
paragraph (g) of this AD, submit any damaged part to the Manager,
Seattle ACO. The damaged part shall be tagged to include the
information specified in paragraphs (l)(1), (l)(2), (l)(3), (l)(4),
and (l)(5) of this AD. Additionally, operators shall align the inner
sleeving, outer sleeving, and wire as installed in the airplane, and
secure the sleeving and wiring in place by taping or other means
when submitting the damaged part to the Manager, Seattle ACO.
Information collection requirements contained in this regulation
have been approved by the OMB under the provisions of the Paperwork
Reduction Act of 1980 (44 U.S.C. 3501 et seq.) and have been
assigned OMB Control Number 2120-0056.
New Reduced Inspection Intervals
Repetitive Inspections
(n) Do the next inspection required by paragraph (h) of this AD
at the time specified in paragraph (n)(1) or (n)(2) of this AD, as
applicable, in accordance with Boeing Alert Service Bulletin 747-
28A2204, Revision 3, dated March 11, 2010. Repeat the inspection
thereafter at intervals not to exceed 15,000 flight hours.
Accomplishing the initial inspection in this paragraph ends the
repetitive inspection requirements of paragraph (h) of this AD.
(1) For airplanes on which the inspection required by paragraph
(g) of this AD has been done as of the effective date of this AD: Do
the inspection at the earlier of the times specified in paragraph
(n)(1)(i) and (n)(1)(ii) of this AD.
(i) Within 15,000 flight hours after the most recent inspection,
or within 6,000 flight
[[Page 41662]]
hours after the effective date of this AD, whichever occurs later.
(ii) Within 20,000 flight cycles or 60,000 flight hours after
the most recent inspection required by paragraph (g) or (h) of this
AD, whichever occurs first.
(2) For airplanes on which the inspection required by paragraph
(g) of this AD has not been done as of the effective date of this
AD: Do the inspection before the accumulation of 15,000 total flight
hours, or within 6,000 flight hours after the effective date of this
AD, whichever occurs later.
Paperwork Reduction Act Burden Statement
(o) A federal agency may not conduct or sponsor, and a person is
not required to respond to, nor shall a person be subject to a
penalty for failure to comply with a collection of information
subject to the requirements of the Paperwork Reduction Act unless
that collection of information displays a current valid OMB Control
Number. The OMB Control Number for this information collection is
2120-0056. Public reporting for this collection of information is
estimated to be approximately 5 minutes per response, including the
time for reviewing instructions, completing and reviewing the
collection of information. All responses to this collection of
information are mandatory. Comments concerning the accuracy of this
burden and suggestions for reducing the burden should be directed to
the FAA at: 800 Independence Ave., SW., Washington, DC 20591, Attn:
Information Collection Clearance Officer, AES-200.
Credit for Actions Accomplished in Accordance With Previous Service
Information
(p) Actions done before the effective date of this AD in
accordance with Boeing Alert Service Bulletin 747-28A2204, Revision
2, dated September 1, 2005, are acceptable for compliance with the
corresponding requirements of this AD.
Alternative Methods of Compliance (AMOCs)
(q)(1) The Manager, Seattle ACO, FAA, has the authority to
approve AMOCs for this AD, if requested using the procedures found
in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request
to your principal inspector or local Flight Standards District
Office, as appropriate. If sending information directly to the
manager of the ACO, send it to ATTN: Tung Tran, Aerospace Engineer,
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification
Office, 1601 Lind Avenue, SW., Renton, Washington 98057-3356;
telephone (425) 917-6505; fax (425) 917-6590. Information may be e-
mailed to: [email protected].
(2) Before using any approved AMOC, notify your Principal
Maintenance Inspector or Principal Avionics Inspector, as
appropriate, or lacking a principal inspector, your local Flight
Standards District Office.
(3) AMOCs approved previously in accordance with AD 97-26-07,
Amendment 39-10250, are approved as alternative methods of
compliance with the corresponding requirements of this AD.
Compliance time extensions approved previously in accordance with AD
97-26-07, are not approved as alternative methods of compliance for
the compliance times required by paragraph (n) of this AD.
Material Incorporated by Reference
(r) You must use Boeing Alert Service Bulletin 747-28A2204,
Revision 3, dated March 11, 2010, to do the actions required by this
AD, unless the AD specifies otherwise.
(1) The Director of the Federal Register approved the
incorporation by reference of Boeing Alert Service Bulletin 747-
28A2204, Revision 3, dated March 11, 2010, under 5 U.S.C. 552(a) and
1 CFR part 51.
(2) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone
206-544-5000, extension 1; fax 206-766-5680; e-mail
[email protected]; Internet https://www.myboeingfleet.com.
(3) You may review copies of the service information at the FAA,
Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton,
Washington. For information on the availability of this material at
the FAA, call 425-227-1221.
(4) You may also review copies of the service information that
is incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at an NARA facility, call 202-741-6030, or go to http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
Issued in Renton, Washington, on July 1, 2011.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2011-17404 Filed 7-14-11; 8:45 am]
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