Airworthiness Directives; The Boeing Company Airplanes, 17290-17294 [2013-05199]
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Federal Register / Vol. 78, No. 55 / Thursday, March 21, 2013 / Rules and Regulations
(ii) For Model 767–400ER series airplanes:
Boeing Service Bulletin 767–27–0205, dated
January 27, 2005; or Boeing Service Bulletin
767–27–0205, Revision 1, dated February 12,
2009.
(2) This paragraph provides credit for the
actions required by paragraphs (h) and (l) of
this AD, if the actions were performed before
the effective date of this AD using Boeing
Alert Service Bulletin 767–27A0224, dated
June 23, 2011, which is not incorporated by
reference.
(3) This paragraph provides credit for the
actions required by paragraph (i) of this AD,
if the actions were performed before the
effective date of this AD using Boeing Alert
Service Bulletin 767–49A0035, Revision 1,
dated December 11, 2003, which is not
incorporated by reference.
(4) This paragraph provides credit for the
actions required by paragraph (j) of this AD,
if the actions were performed before the
effective date of this AD using Boeing Alert
Service Bulletin 767–51A0027, dated
December 9, 2004 (for Model 767–200, –300,
and –300F series airplanes); or Boeing Alert
Service Bulletin 767–51A0028, dated
December 9, 2004 (for Model 767–400ER
series airplanes); which are not incorporated
by reference.
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(n) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Seattle Aircraft
Certification Office (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 the
attention of the person identified in the
Related Information section of this AD.
Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the local flight standards district office/
certificate holding district office.
(3) An AMOC that provides an acceptable
level of safety may be used for any repair
required by this AD if it is approved by the
Boeing Commercial Airplanes Organization
Designation Authorization (ODA) that has
been authorized by the Manager, Seattle
ACO, to make those findings. For a repair
method to be approved, the repair must meet
the certification basis of the airplane, and the
approval must specifically refer to this AD.
(o) Related Information
For more information about this AD,
contact Kelly McGuckin, Aerospace
Engineer, Systems and Equipment Branch,
ANM–130S, FAA, Seattle Aircraft
Certification Office, 1601 Lind Avenue SW.,
Renton, WA 98057–3356; phone: (425) 917–
6490; fax: (425) 917–6590; email:
Kelly.McGuckin@faa.gov.
(p) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
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paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless the AD specifies otherwise.
(i) Boeing Service Bulletin 767–27–0204,
Revision 2, dated August 16, 2011.
(ii) Boeing Service Bulletin 767–27–0205,
Revision 2, dated August 30, 2011.
(iii) Boeing Service Bulletin 767–27A0224,
Revision 1, dated December 16, 2011.
(iv) Boeing Service Bulletin 767–49A0035,
Revision 2, dated June 2, 2006.
(v) Boeing Service Bulletin 767–51A0027,
Revision 1, dated October 12, 2006.
(vi) Boeing Service Bulletin 767–51A0028,
Revision 1, dated October 12, 2006.
(3) 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; Internet https://
www.myboeingfleet.com.
(4) You may view this 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.
(5) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Renton, Washington, on February
28, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2013–05588 Filed 3–20–13; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2008–0847; Directorate
Identifier 2008–NM–056–AD; Amendment
39–17375; AD 2013–05–03]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
SUMMARY: We are adopting a new
airworthiness directive (AD) for certain
The Boeing Company Model 777–200,
–200LR, –300, and –300ER series
airplanes. This AD was prompted by
fuel system reviews conducted by the
manufacturer. This AD requires doing
an inspection to identify the part
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number of the motor-operated valve
(MOV) actuators of the main and center
fuel tanks; replacing certain MOV
actuators with new MOV actuators; and
measuring the electrical resistance of
the bond from the adapter plate to the
airplane structure, and doing corrective
actions if necessary. We are issuing this
AD to prevent electrical current from
flowing through an MOV actuator into
a fuel tank, which could create a
potential ignition source inside the fuel
tank. This condition, in combination
with flammable fuel vapors, could result
in a fuel tank explosion and consequent
loss of the airplane.
DATES: This AD is effective April 25,
2013.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in the AD
as of April 25, 2013.
ADDRESSES: For service information
identified in this AD, contact Boeing
Commercial Airplanes, Attention: Data
& Services Management, P.O. Box 3707,
MC 2H–65, Seattle, WA 98124–2207;
telephone 206–544–5000, extension 1;
fax 206–766–5680; 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, WA. 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 https://
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:
Rebel Nichols, Aerospace Engineer,
Propulsion Branch, ANM–140S, Seattle
Aircraft Certification Office (ACO),
FAA, 1601 Lind Avenue SW., Renton,
WA 98057–3356; phone: 425–917–6509;
fax: 425–917–6590; email:
rebel.nichols@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a supplemental notice of
proposed rulemaking (SNPRM) to
amend 14 CFR part 39 to include an
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airworthiness directive (AD) that would
apply to the specified products. That
SNPRM published in the Federal
Register on December 23, 2010 (75 FR
80738). The original NPRM (73 FR
45893, August 7, 2008) proposed to
require doing an inspection of the MOV
actuators of the main and center fuel
tanks for a certain part number (P/N);
replacing the MOV actuator with a new
MOV actuator if necessary; and
measuring the electrical resistance of
the bond from the adapter plate to the
airplane structure, and corrective
actions if necessary. The original NPRM
also proposed to require revising the
Airworthiness Limitations section of the
Instructions for Continued
Airworthiness. The SNPRM proposed to
revise the original NPRM by adding
airplanes and removing the requirement
for revising the Airworthiness
Limitations section of the Instructions
for Continued Airworthiness.
Comments
We gave the public the opportunity to
participate in developing this AD. The
following presents the comments
received on the SNPRM (75 FR 80738,
December 23, 2010) and the FAA’s
response to each comment.
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Support for the SNPRM (75 FR 80738,
December 23, 2010)
Continental Airlines has no technical
objections, issues, or comments to the
SNPRM (75 FR 80738, December 23,
2010).
Request To Revise Applicability To
Include Part Number
Boeing requested that the
applicability of the SNPRM (75 FR
80738, December 23, 2010) be revised to
include the phrase, ‘‘with MOV actuator
part number MA20A1001–1 installed.’’
Boeing stated that the change will avoid
future alternative methods of
compliance (AMOC) requests.
We disagree with revising the
applicability of this AD because
paragraph (c) of this AD clearly defines
the airplanes affected by this AD. For
those affected airplanes, paragraph (g) of
this AD requires inspection of the MOV
actuators to determine their part
number. If an MOV actuator with P/N
MA20A1001–1 is found, that actuator
must be replaced, as required by
paragraph (h) of this AD. No change has
been made to the AD in this regard.
Request To Allow Installation of
Certain Parts
Boeing requested that, if the
applicability of the SNPRM (75 FR
80738, December 23, 2010) is not
revised, we add a statement allowing
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MOV actuators certified after P/N
MA30A1001 to be installed without
AMOC approval. Boeing stated that this
would allow normal maintenance to
resume once P/N MA20A1001–1 is
removed. Boeing stated that the aircraft
configuration with an MOV actuator
having P/N MA30A1001 becomes the
mandated configuration, because the
SNPRM requires the installation of that
specific part number. Boeing stated that
the SNPRM would not allow the
installation of actuators approved after
P/N MA30A1001 without AMOC
approval.
We agree with the commenter’s
request. In the case of this MOV
actuator, we will allow—without AMOC
approval—replacement of the affected
MOV actuator with a Boeing part. The
replacement part must be fully
interchangeable with the part specified
in Boeing Service Bulletin 777–
28A0034, Revision 2, dated September
20, 2010, and must be approved by the
FAA after September 20, 2010.
Paragraph (h) of this AD has been
revised to include this provision.
Request for Further Investigation
China Southern Airlines requested
that we further investigate the ignition
potential of P/N MA20A1001–1 to find
a better solution that does not require
installing the new P/N MA30A1001.
The commenter stated that it would like
to see P/N MA30A1001 experience
better reliability than P/N MA20A1001
before we require a big cost burden on
operators.
We disagree with the request to
further investigate P/N MA20A1001–1.
That part number was identified as
unsafe during the Special Federal
Aviation Regulation No. 88 (SFAR 88)
(66 FR 23086, May 7, 2001) system
safety assessment reviews conducted by
the manufacturer and must be replaced.
Steps have been taken to improve the
reliability of P/N MA30A1001, and that
part does not have the identified unsafe
condition that is the subject of this AD.
No change has been made to this AD in
this regard.
Request To Remove Paragraph (i) of the
SNPRM (75 FR 80738, December 23,
2010)
United Airlines (UAL) requested that
we remove paragraph (i) of the SNPRM
(75 FR 80738, December 23, 2010),
which prohibits installation of MOV
actuators having P/N MA20A1001–1 on
any airplane as of the effective date of
this AD. UAL stated that the 777
Aircraft Maintenance Manual (AMM)
does not provide sufficient replacement
instructions for operators to maintain
compliance with paragraph (i) of the
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SNPRM. UAL stated that the proposed
rule will cause undue economic
hardship on operators. UAL also noted
that similar ADs do not contain a
similar parts prohibition paragraph.
UAL also stated that paragraph (h) of the
SNPRM specifies to do ‘‘all applicable
corrective actions before further flight’’;
therefore, an operator would have to
replace all MOV actuators at the same
time.
We disagree with the request to
remove paragraph (i) of this AD.
Because an unsafe condition has been
identified on P/N MA20A1001–1, we
have determined that P/N MA20A1001–
1 cannot be allowed for installation.
This AD requires the replacement of all
affected MOV actuators from an
operator’s fleet within the specified
compliance time; however, the AD does
not require replacement of all affected
MOV actuators on an airplane at the
same time. Operators are allowed to
replace only one MOV actuator and then
bring the aircraft back into service.
Paragraph (h) of this AD does specify
doing all applicable corrective actions
before further flight, but the applicable
corrective actions are those associated
with the measurement of the electrical
resistance of the bond. If an operator
encountered unscheduled removal of P/
N MA20A1001–1, that part should be
replaced with a part having an accepted
part number (i.e., P/N MA30A1001 or
other FAA-approved replacement).
However, according to the provisions of
paragraph (m) of this AD, operators may
request approval of an AMOC if the
request is submitted with substantiating
data that prove the requested action will
provide an adequate level of safety. No
change has been made to the AD in this
regard.
Request To Revise Proposed Costs of
Compliance
UAL requested that we revise or
clarify the Costs of Compliance section
of the SNPRM (75 FR 80738, December
23, 2010). UAL considered that the
maximum costs are understated in the
SNPRM. UAL stated that, since there are
11 actuators on each airplane, the parts
costs need to be changed to include 11
actuators.
We agree to revise the cost of parts in
the Costs of Compliance section of this
AD. Since the labor cost is based on the
total number of work-hours required to
replace all 11 actuators, the parts cost
should also be based on the total cost of
11 actuators. The Costs of Compliance
section has been revised accordingly.
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Request To Permit Omission of Parts
Inspection or Record Check
UAL requested that paragraph (g) of
the SNPRM (75 FR 80738, December 23,
2010) be revised to include an
additional paragraph that permits
operators to omit the parts inspection or
records check and to permit removal of
the installed MOV, regardless of the part
number, and install the new part
number, in accordance with Boeing
Service Bulletin 777–28A0034, Revision
2, dated September 20, 2010. UAL
stated that this will allow operators to
avoid costs associated with inspections
and records checks while achieving the
same level of safety by ensuring that P/
N MA30A1001 is installed.
We agree to add replacement of the
MOV actuators as an optional method of
compliance with the inspection or
records check required by paragraph (g)
of this AD. Replacing actuators with
actuators having part numbers other
than P/N MA20A1001–1 addresses the
identified unsafe condition. We have
added new paragraph (l) to this AD to
allow the option. We have re-identified
subsequent paragraphs accordingly.
Request To Incorporate New
Information in Information Notice
UAL requests that operators be
allowed to incorporate the information
contained in Boeing Service Bulletin
Information Notice (IN) 777–28A0034
IN 04, dated January 6, 2011, as an
option for compliance with the SNPRM
(75 FR 80738, December 23, 1010).
We agree that certain information
identified in Boeing Service Bulletin IN
777–28A0034 IN 04, dated January 6,
2011, should be included in this AD.
We have added paragraph (k)(1) to this
AD to specify the correct equipment
number in the title of the work package
specified in the Accomplishment
Instructions of Boeing Service Bulletin
777–28A0034, Revision 2, dated
September 20, 2010. Boeing Service
Bulletin IN 777–28A0034 IN 04, dated
January 6, 2011, also clarifies certain
weight and balance changes; however,
because this AD does not refer to that
section of Boeing Service Bulletin 777–
28A0034, Revision 2, dated September
20, 2010, no change to this AD is
necessary in this regard.
Other Changes Made to This AD
We have added paragraph (k)(2) to
this AD to exclude airplanes with
Airline Information Management
System (AIMS) V1 installed from the
requirement to replace actuators at the
spar valve location. The currently
available MOV actuator installed in
those locations presents a risk of a latent
failure of the indication portion of the
actuator, which could lead to the
inability to shut fuel off to an engine.
For AIMS V1-equipped airplanes, the
risk associated with the creation of an
ignition source inside the fuel tank will
need to be eliminated by means other
than replacing the actuator with P/N
MA30A1001. Future rulemaking for the
AIMS V1-equipped airplanes might be
needed to address this SFAR 88 (66 FR
23086, May 7, 2001) issue. We have
coordinated this issue with Boeing.
We have also clarified paragraph (j) of
this AD by specifying that credit is
given for certain actions done ‘‘before
the effective date of this AD’’ using
specific service information. We have
also revised the heading and wording of
paragraph (j) of this AD. This change
does not affect the intent of that
paragraph.
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
and minor editorial changes. We have
determined that these minor changes:
• Are consistent with the intent that
was proposed in the SNPRM (75 FR
80738, December 23, 2010) for
correcting the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the SNPRM (75 FR 80738,
December 23, 2010).
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
127 airplanes of U.S. registry. We
estimate the following costs to comply
with this AD:
ESTIMATED COSTS
Action
Labor cost
Inspection of MOV Actuators ..................
Up to 6 work-hours × $85 per hour =
$510.
We estimate the following costs to do
any necessary replacements that would
Parts cost
Cost per product
$0
be required based on the results of the
inspection. We have no way of
Up to $510 ............
Cost on U.S. operators
Up to $64,770.
determining the number of aircraft that
might need these replacements.
ON-CONDITION COSTS
Labor cost
Parts cost
Replacement of 11 MOV Actuators Without Fuel
Tank Access.
Replacement of 11 MOV Actuators With Fuel
Tank Access.
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Action
Up to 47 work-hours × $85 per hour = $3,995 ....
Up to $60,247 .......
Up to $64,242.
Up to 423 work-hours × $85 per hour = $35,955
Up to $60,247 .......
Up to $96,202.
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
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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
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Cost per product
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
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that is likely to exist or develop on
products identified in this rulemaking
action.
(d) Subject
Air Transport Association (ATA) of
America Code 28, Fuel.
Regulatory Findings
(e) Unsafe Condition
This AD results from fuel system reviews
conducted by the manufacturer. The Federal
Aviation Administration is issuing this AD to
prevent electrical current from flowing
through a motor-operated valve (MOV)
actuator into a fuel tank, which could create
a potential ignition source inside the fuel
tank. This condition, in combination with
flammable fuel vapors, could result in a fuel
tank explosion and consequent loss of the
airplane.
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.
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 adding
the following new airworthiness
directive (AD):
■
2013–05–03 The Boeing Company:
Amendment 39–17375; Docket No.
FAA–2008–0847; Directorate Identifier
2008–NM–056–AD.
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(a) Effective Date
This AD is effective April 25, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company
Model 777–200, –200LR, –300, and –300ER
series airplanes, certificated in any category,
as identified in Boeing Service Bulletin 777–
28A0034, Revision 2, dated September 20,
2010.
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(f) Compliance
You are responsible for having the actions
required by this AD performed within the
compliance times specified, unless the
actions have already been done.
(g) Inspection
Except as provided by paragraph (l) of this
AD: Within 60 months after the effective date
of this AD, do an inspection of the MOV
actuators of the main and center fuel tanks
for part number (P/N) MA20A1001–1, in
accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777–
28A0034, Revision 2, dated September 20,
2010. A review of airplane maintenance
records is acceptable in lieu of this
inspection if the part number can be
conclusively determined from that review.
(h) Replacement
Except as provided by paragraphs (k)(1)
and (k)(2) of this AD, if any MOV actuator
having P/N MA20A1001–1 is found during
the inspection required by paragraph (g) of
this AD, within 60 months after the effective
date of this AD, replace the MOV actuator
with either a new or serviceable MOV
actuator having P/N MA30A1001, or with an
MOV actuator that meets the criteria
specified in paragraphs (h)(1) and (h)(2) of
this AD; and, as applicable, measure the
electrical resistance of the bond from the
adapter plate to the airplane structure and do
all applicable corrective actions; in
accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777–
28A0034, Revision 2, dated September 20,
2010. Do all applicable corrective actions
before further flight.
(1) The replacement MOV actuator must be
a Boeing part that is approved after the
issuance of Boeing Service Bulletin 777–
28A0034, Revision 2, dated September 20,
2010, by the Manager, Seattle Aircraft
Certification Office (ACO), FAA; or the
Boeing Commercial Airplanes Organization
Designation Authorization (ODA) that has
been authorized by the Manager, Seattle
ACO, to approve the part.
(2) The replacement MOV actuator must be
fully interchangeable with the part specified
in Boeing Service Bulletin 777–28A0034,
Revision 2, dated September 20, 2010.
(i) Part Installation Prohibition
As of the effective date of this AD, no
person may install an MOV actuator, P/N
MA20A1001–1, on any airplane.
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17293
(j) Credit for Previous Actions
This paragraph provides credit for the
actions required by paragraphs (g) and (h) of
this AD, if those actions were performed
before the effective date of this AD using
Boeing Alert Service Bulletin 777–28A0034,
dated August 2, 2007; or Boeing Alert Service
Bulletin 777–28A0034, Revision 1, dated
May 20, 2010; except that replacement of an
MOV actuator must also include cap sealing
the bonding jumper, as described in Boeing
Alert Service Bulletin 777–28A0034,
Revision 2, dated September 20, 2010; and
provided that the replacement is an MOV
actuator identified in paragraph (j)(1) or (j)(2)
of this AD. Boeing Alert Service Bulletin
777–28A0034, dated August 2, 2007; and
Boeing Alert Service Bulletin 777–28A0034,
Revision 1, dated May 20, 2010; are not
incorporated by reference in this AD.
(1) An MOV actuator that has P/N
MA30A1001.
(2) An MOV actuator that has a part
number other than P/N MA20A1001–1 and
meets the criteria specified in paragraphs
(h)(1) and (h)(2) of this AD.
(k) Exceptions to Service Information
(1) Work Package 9 of the Accomplishment
Instructions of Boeing Service Bulletin 777–
28A0034, Revision 2, dated September 20,
2010, refers to an incorrect part number,
P/N V8166; the correct part number that must
be used is P/N V28166.
(2) For airplanes with Airline Information
Management System (AIMS) V1 installed:
MOV actuators at the spar valve locations
(Work Packages 1 and 2 of the
Accomplishment Instructions of Boeing
Service Bulletin 777–28A0034, Revision 2,
dated September 20, 2010), are not required
to be replaced.
(l) Optional Method of Compliance
Replacing all MOV actuators at the main
and center fuel tanks, as specified in Boeing
Service Bulletin 777–28A0034, Revision 2,
dated September 20, 2010, with new or
serviceable MOV actuators identified in
paragraph (l)(1) or (l)(2) of this AD; and, as
applicable, measuring the electrical
resistance of the bond from the adapter plate
to the airplane structure and doing all
applicable corrective actions; in accordance
with the Accomplishment Instructions of
Boeing Service Bulletin 777–28A0034,
Revision 2, dated September 20, 2010; is an
acceptable method of compliance with the
actions required by paragraph (g) of this AD.
(1) MOV actuators that have P/N
MA30A1001.
(2) MOV actuators that have a part number
other than P/N MA20A1001–1 and meet the
criteria specified in paragraphs (h)(1) and
(h)(2) of this AD.
(m) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Seattle Aircraft
Certification Office (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
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21MRR1
17294
Federal Register / Vol. 78, No. 55 / Thursday, March 21, 2013 / Rules and Regulations
to the manager of the ACO, send it to the
attention of the person identified in the
Related Information section of this AD.
Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC,
notify your appropriate principal inspector,
or lacking a principal inspector, the manager
of the local flight standards district office/
certificate holding district office.
(3) An AMOC that provides an acceptable
level of safety may be used for any repair
required by this AD if it is approved by the
Boeing Commercial Airplanes Organization
Designation Authorization (ODA) that has
been authorized by the Manager, Seattle
ACO, to make those findings. For a repair
method to be approved, the repair must meet
the certification basis of the airplane, and the
approval must specifically refer to this AD.
wreier-aviles on DSK5TPTVN1PROD with RULES
(n) Related Information
(1) For more information about this AD,
contact Rebel Nichols, Aerospace Engineer,
Propulsion Branch, ANM–140S, FAA, 1601
Lind Avenue SW., Renton, WA 98057–3356;
phone: 425–917–6509; fax: 425–917–6590;
email: rebel.nichols@faa.gov.
(2) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H–65,
Seattle, WA 98124–2207; telephone 206–
544–5000, extension 1; fax 206–766–5680;
Internet https://www.myboeingfleet.com.
(o) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless the AD specifies otherwise.
(i) Boeing Service Bulletin 777–28A0034,
Revision 2, dated September 20, 2010.
(ii) Reserved.
(3) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Data & Services
Management, P.O. Box 3707, MC 2H–65,
Seattle, WA 98124–2207; telephone 206–
544–5000, extension 1; fax 206–766–5680;
Internet https://www.myboeingfleet.com.
(4) You may view this service information
at FAA, Transport Airplane Directorate, 1601
Lind Avenue SW., Renton, WA. For
information on the availability of this
material at the FAA, call 425–227–1221.
(5) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Renton, Washington, on February
25, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate,
Aircraft Certification Service.
[FR Doc. 2013–05199 Filed 3–20–13; 8:45 am]
BILLING CODE 4910–13–P
VerDate Mar<14>2013
14:39 Mar 20, 2013
Jkt 229001
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2012–0597; Directorate
Identifier 2012–NM–054–AD; Amendment
39–17377; AD 2013–05–05]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
SUMMARY: We are adopting a new
airworthiness directive (AD) for certain
The Boeing Company Model 777–200,
–200LR, –300, and –300ER series
airplanes. This AD was prompted by
reports of in-service events related to
electrical power system malfunctions
resulting in damage to electrical load
management system (ELMS) P200 and
P300 power panels and the surrounding
area. This AD requires installing
enclosure trays to contain debris in
certain ELMS panels, and replacing
certain ELMS contactors. We are issuing
this AD to prevent contactor failures,
which could result in uncontained hot
debris flow due to ELMS contactor
breakdown, consequent smoke and heat
damage to airplane structure and
equipment during ground operations,
and possible injuries to passengers and
crew.
DATES: This AD is effective April 25,
2013.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in the AD
as of April 25, 2013.
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; Internet
https://www.myboeingfleet.com. You
may review copies of the referenced
service information at the FAA, 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.
Examining the AD Docket
You may examine the AD docket on
the Internet at https://
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
PO 00000
Frm 00010
Fmt 4700
Sfmt 4700
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:
Georgios Roussos, Aerospace Engineer,
Systems and Equipment Branch, ANM–
130S, Seattle Aircraft Certification
Office (ACO), FAA, 1601 Lind Avenue
SW., Renton, Washington 98057–3356;
phone: 425–917–6482; fax: 425–917–
6590; email: georgios.roussos@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM published in the Federal
Register on June 18, 2012 (77 FR 36206).
That NPRM proposed to require
installing enclosure trays to contain
debris in certain ELMS panels, and
replacing certain ELMS contactors in
the P200 and P300 ELMS panels.
Comments
We gave the public the opportunity to
participate in developing this AD. The
following presents the comments
received on the proposal (77 FR 36206,
June 18, 2012) and the FAA’s response
to each comment.
Request To Allow Certain Installations
of Removed Contactors
Cathay Pacific Airways (Cathay) and
All Nippon Airways (All Nippon)
requested that we clarify the proposed
requirement to discard the removed
contactors. The commenters requested
that we identify certain inspection
criteria that would allow further use of
these contactors on non-AD-affected
locations and ease the financial burden
of discarding removed but serviceable
power contactors.
We partially agree with the request.
The note in paragraphs 3.B.3 and 3.B.4
of the Accomplishment Instructions of
Boeing Special Attention Service
Bulletin 777–24–0112, Revision 2, dated
December 14, 2011, specifies discarding
these parts. We agree that power
contactors that have been appropriately
overhauled to the manufacturer’s
original specifications may meet criteria
for safe operation in non-AD-affected
locations. But this AD applies to the
affected airplanes, not the contactors;
the AD therefore cannot mandate the
disposition of contactors removed from
E:\FR\FM\21MRR1.SGM
21MRR1
Agencies
[Federal Register Volume 78, Number 55 (Thursday, March 21, 2013)]
[Rules and Regulations]
[Pages 17290-17294]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-05199]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0847; Directorate Identifier 2008-NM-056-AD;
Amendment 39-17375; AD 2013-05-03]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are adopting a new airworthiness directive (AD) for certain
The Boeing Company Model 777-200, -200LR, -300, and -300ER series
airplanes. This AD was prompted by fuel system reviews conducted by the
manufacturer. This AD requires doing an inspection to identify the part
number of the motor-operated valve (MOV) actuators of the main and
center fuel tanks; replacing certain MOV actuators with new MOV
actuators; and measuring the electrical resistance of the bond from the
adapter plate to the airplane structure, and doing corrective actions
if necessary. We are issuing this AD to prevent electrical current from
flowing through an MOV actuator into a fuel tank, which could create a
potential ignition source inside the fuel tank. This condition, in
combination with flammable fuel vapors, could result in a fuel tank
explosion and consequent loss of the airplane.
DATES: This AD is effective April 25, 2013.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in the AD as of April 25,
2013.
ADDRESSES: For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; 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, WA. 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 https://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: Rebel Nichols, Aerospace Engineer,
Propulsion Branch, ANM-140S, Seattle Aircraft Certification Office
(ACO), FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-
917-6509; fax: 425-917-6590; email: rebel.nichols@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a supplemental notice of proposed rulemaking (SNPRM) to
amend 14 CFR part 39 to include an
[[Page 17291]]
airworthiness directive (AD) that would apply to the specified
products. That SNPRM published in the Federal Register on December 23,
2010 (75 FR 80738). The original NPRM (73 FR 45893, August 7, 2008)
proposed to require doing an inspection of the MOV actuators of the
main and center fuel tanks for a certain part number (P/N); replacing
the MOV actuator with a new MOV actuator if necessary; and measuring
the electrical resistance of the bond from the adapter plate to the
airplane structure, and corrective actions if necessary. The original
NPRM also proposed to require revising the Airworthiness Limitations
section of the Instructions for Continued Airworthiness. The SNPRM
proposed to revise the original NPRM by adding airplanes and removing
the requirement for revising the Airworthiness Limitations section of
the Instructions for Continued Airworthiness.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comments received on the SNPRM (75
FR 80738, December 23, 2010) and the FAA's response to each comment.
Support for the SNPRM (75 FR 80738, December 23, 2010)
Continental Airlines has no technical objections, issues, or
comments to the SNPRM (75 FR 80738, December 23, 2010).
Request To Revise Applicability To Include Part Number
Boeing requested that the applicability of the SNPRM (75 FR 80738,
December 23, 2010) be revised to include the phrase, ``with MOV
actuator part number MA20A1001-1 installed.'' Boeing stated that the
change will avoid future alternative methods of compliance (AMOC)
requests.
We disagree with revising the applicability of this AD because
paragraph (c) of this AD clearly defines the airplanes affected by this
AD. For those affected airplanes, paragraph (g) of this AD requires
inspection of the MOV actuators to determine their part number. If an
MOV actuator with P/N MA20A1001-1 is found, that actuator must be
replaced, as required by paragraph (h) of this AD. No change has been
made to the AD in this regard.
Request To Allow Installation of Certain Parts
Boeing requested that, if the applicability of the SNPRM (75 FR
80738, December 23, 2010) is not revised, we add a statement allowing
MOV actuators certified after P/N MA30A1001 to be installed without
AMOC approval. Boeing stated that this would allow normal maintenance
to resume once P/N MA20A1001-1 is removed. Boeing stated that the
aircraft configuration with an MOV actuator having P/N MA30A1001
becomes the mandated configuration, because the SNPRM requires the
installation of that specific part number. Boeing stated that the SNPRM
would not allow the installation of actuators approved after P/N
MA30A1001 without AMOC approval.
We agree with the commenter's request. In the case of this MOV
actuator, we will allow--without AMOC approval--replacement of the
affected MOV actuator with a Boeing part. The replacement part must be
fully interchangeable with the part specified in Boeing Service
Bulletin 777-28A0034, Revision 2, dated September 20, 2010, and must be
approved by the FAA after September 20, 2010. Paragraph (h) of this AD
has been revised to include this provision.
Request for Further Investigation
China Southern Airlines requested that we further investigate the
ignition potential of P/N MA20A1001-1 to find a better solution that
does not require installing the new P/N MA30A1001. The commenter stated
that it would like to see P/N MA30A1001 experience better reliability
than P/N MA20A1001 before we require a big cost burden on operators.
We disagree with the request to further investigate P/N MA20A1001-
1. That part number was identified as unsafe during the Special Federal
Aviation Regulation No. 88 (SFAR 88) (66 FR 23086, May 7, 2001) system
safety assessment reviews conducted by the manufacturer and must be
replaced. Steps have been taken to improve the reliability of P/N
MA30A1001, and that part does not have the identified unsafe condition
that is the subject of this AD. No change has been made to this AD in
this regard.
Request To Remove Paragraph (i) of the SNPRM (75 FR 80738, December 23,
2010)
United Airlines (UAL) requested that we remove paragraph (i) of the
SNPRM (75 FR 80738, December 23, 2010), which prohibits installation of
MOV actuators having P/N MA20A1001-1 on any airplane as of the
effective date of this AD. UAL stated that the 777 Aircraft Maintenance
Manual (AMM) does not provide sufficient replacement instructions for
operators to maintain compliance with paragraph (i) of the SNPRM. UAL
stated that the proposed rule will cause undue economic hardship on
operators. UAL also noted that similar ADs do not contain a similar
parts prohibition paragraph. UAL also stated that paragraph (h) of the
SNPRM specifies to do ``all applicable corrective actions before
further flight''; therefore, an operator would have to replace all MOV
actuators at the same time.
We disagree with the request to remove paragraph (i) of this AD.
Because an unsafe condition has been identified on P/N MA20A1001-1, we
have determined that P/N MA20A1001-1 cannot be allowed for
installation. This AD requires the replacement of all affected MOV
actuators from an operator's fleet within the specified compliance
time; however, the AD does not require replacement of all affected MOV
actuators on an airplane at the same time. Operators are allowed to
replace only one MOV actuator and then bring the aircraft back into
service. Paragraph (h) of this AD does specify doing all applicable
corrective actions before further flight, but the applicable corrective
actions are those associated with the measurement of the electrical
resistance of the bond. If an operator encountered unscheduled removal
of P/N MA20A1001-1, that part should be replaced with a part having an
accepted part number (i.e., P/N MA30A1001 or other FAA-approved
replacement). However, according to the provisions of paragraph (m) of
this AD, operators may request approval of an AMOC if the request is
submitted with substantiating data that prove the requested action will
provide an adequate level of safety. No change has been made to the AD
in this regard.
Request To Revise Proposed Costs of Compliance
UAL requested that we revise or clarify the Costs of Compliance
section of the SNPRM (75 FR 80738, December 23, 2010). UAL considered
that the maximum costs are understated in the SNPRM. UAL stated that,
since there are 11 actuators on each airplane, the parts costs need to
be changed to include 11 actuators.
We agree to revise the cost of parts in the Costs of Compliance
section of this AD. Since the labor cost is based on the total number
of work-hours required to replace all 11 actuators, the parts cost
should also be based on the total cost of 11 actuators. The Costs of
Compliance section has been revised accordingly.
[[Page 17292]]
Request To Permit Omission of Parts Inspection or Record Check
UAL requested that paragraph (g) of the SNPRM (75 FR 80738,
December 23, 2010) be revised to include an additional paragraph that
permits operators to omit the parts inspection or records check and to
permit removal of the installed MOV, regardless of the part number, and
install the new part number, in accordance with Boeing Service Bulletin
777-28A0034, Revision 2, dated September 20, 2010. UAL stated that this
will allow operators to avoid costs associated with inspections and
records checks while achieving the same level of safety by ensuring
that P/N MA30A1001 is installed.
We agree to add replacement of the MOV actuators as an optional
method of compliance with the inspection or records check required by
paragraph (g) of this AD. Replacing actuators with actuators having
part numbers other than P/N MA20A1001-1 addresses the identified unsafe
condition. We have added new paragraph (l) to this AD to allow the
option. We have re-identified subsequent paragraphs accordingly.
Request To Incorporate New Information in Information Notice
UAL requests that operators be allowed to incorporate the
information contained in Boeing Service Bulletin Information Notice
(IN) 777-28A0034 IN 04, dated January 6, 2011, as an option for
compliance with the SNPRM (75 FR 80738, December 23, 1010).
We agree that certain information identified in Boeing Service
Bulletin IN 777-28A0034 IN 04, dated January 6, 2011, should be
included in this AD. We have added paragraph (k)(1) to this AD to
specify the correct equipment number in the title of the work package
specified in the Accomplishment Instructions of Boeing Service Bulletin
777-28A0034, Revision 2, dated September 20, 2010. Boeing Service
Bulletin IN 777-28A0034 IN 04, dated January 6, 2011, also clarifies
certain weight and balance changes; however, because this AD does not
refer to that section of Boeing Service Bulletin 777-28A0034, Revision
2, dated September 20, 2010, no change to this AD is necessary in this
regard.
Other Changes Made to This AD
We have added paragraph (k)(2) to this AD to exclude airplanes with
Airline Information Management System (AIMS) V1 installed from the
requirement to replace actuators at the spar valve location. The
currently available MOV actuator installed in those locations presents
a risk of a latent failure of the indication portion of the actuator,
which could lead to the inability to shut fuel off to an engine. For
AIMS V1-equipped airplanes, the risk associated with the creation of an
ignition source inside the fuel tank will need to be eliminated by
means other than replacing the actuator with P/N MA30A1001. Future
rulemaking for the AIMS V1-equipped airplanes might be needed to
address this SFAR 88 (66 FR 23086, May 7, 2001) issue. We have
coordinated this issue with Boeing.
We have also clarified paragraph (j) of this AD by specifying that
credit is given for certain actions done ``before the effective date of
this AD'' using specific service information. We have also revised the
heading and wording of paragraph (j) of this AD. This change does not
affect the intent of that paragraph.
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 and minor editorial
changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
SNPRM (75 FR 80738, December 23, 2010) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM (75 FR 80738, December 23, 2010).
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 127 airplanes of U.S.
registry. We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Inspection of MOV Actuators.. Up to 6 work- $0 Up to $510............. Up to $64,770.
hours x $85
per hour =
$510.
----------------------------------------------------------------------------------------------------------------
We estimate the following costs to do any necessary replacements
that would be required based on the results of the inspection. We have
no way of determining the number of aircraft that might need these
replacements.
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Replacement of 11 MOV Actuators Up to 47 work-hours Up to $60,247.............. Up to $64,242.
Without Fuel Tank Access. x $85 per hour =
$3,995.
Replacement of 11 MOV Actuators Up to 423 work- Up to $60,247.............. Up to $96,202.
With Fuel Tank Access. hours x $85 per
hour = $35,955.
----------------------------------------------------------------------------------------------------------------
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
[[Page 17293]]
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.
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):
2013-05-03 The Boeing Company: Amendment 39-17375; Docket No. FAA-
2008-0847; Directorate Identifier 2008-NM-056-AD.
(a) Effective Date
This AD is effective April 25, 2013.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 777-200, -200LR, -
300, and -300ER series airplanes, certificated in any category, as
identified in Boeing Service Bulletin 777-28A0034, Revision 2, dated
September 20, 2010.
(d) Subject
Air Transport Association (ATA) of America Code 28, Fuel.
(e) Unsafe Condition
This AD results from fuel system reviews conducted by the
manufacturer. The Federal Aviation Administration is issuing this AD
to prevent electrical current from flowing through a motor-operated
valve (MOV) actuator into a fuel tank, which could create a
potential ignition source inside the fuel tank. This condition, in
combination with flammable fuel vapors, could result in a fuel tank
explosion and consequent loss of the airplane.
(f) Compliance
You are responsible for having the actions required by this AD
performed within the compliance times specified, unless the actions
have already been done.
(g) Inspection
Except as provided by paragraph (l) of this AD: Within 60 months
after the effective date of this AD, do an inspection of the MOV
actuators of the main and center fuel tanks for part number (P/N)
MA20A1001-1, in accordance with the Accomplishment Instructions of
Boeing Service Bulletin 777-28A0034, Revision 2, dated September 20,
2010. A review of airplane maintenance records is acceptable in lieu
of this inspection if the part number can be conclusively determined
from that review.
(h) Replacement
Except as provided by paragraphs (k)(1) and (k)(2) of this AD,
if any MOV actuator having P/N MA20A1001-1 is found during the
inspection required by paragraph (g) of this AD, within 60 months
after the effective date of this AD, replace the MOV actuator with
either a new or serviceable MOV actuator having P/N MA30A1001, or
with an MOV actuator that meets the criteria specified in paragraphs
(h)(1) and (h)(2) of this AD; and, as applicable, measure the
electrical resistance of the bond from the adapter plate to the
airplane structure and do all applicable corrective actions; in
accordance with the Accomplishment Instructions of Boeing Service
Bulletin 777-28A0034, Revision 2, dated September 20, 2010. Do all
applicable corrective actions before further flight.
(1) The replacement MOV actuator must be a Boeing part that is
approved after the issuance of Boeing Service Bulletin 777-28A0034,
Revision 2, dated September 20, 2010, by the Manager, Seattle
Aircraft Certification Office (ACO), FAA; or the Boeing Commercial
Airplanes Organization Designation Authorization (ODA) that has been
authorized by the Manager, Seattle ACO, to approve the part.
(2) The replacement MOV actuator must be fully interchangeable
with the part specified in Boeing Service Bulletin 777-28A0034,
Revision 2, dated September 20, 2010.
(i) Part Installation Prohibition
As of the effective date of this AD, no person may install an
MOV actuator, P/N MA20A1001-1, on any airplane.
(j) Credit for Previous Actions
This paragraph provides credit for the actions required by
paragraphs (g) and (h) of this AD, if those actions were performed
before the effective date of this AD using Boeing Alert Service
Bulletin 777-28A0034, dated August 2, 2007; or Boeing Alert Service
Bulletin 777-28A0034, Revision 1, dated May 20, 2010; except that
replacement of an MOV actuator must also include cap sealing the
bonding jumper, as described in Boeing Alert Service Bulletin 777-
28A0034, Revision 2, dated September 20, 2010; and provided that the
replacement is an MOV actuator identified in paragraph (j)(1) or
(j)(2) of this AD. Boeing Alert Service Bulletin 777-28A0034, dated
August 2, 2007; and Boeing Alert Service Bulletin 777-28A0034,
Revision 1, dated May 20, 2010; are not incorporated by reference in
this AD.
(1) An MOV actuator that has P/N MA30A1001.
(2) An MOV actuator that has a part number other than P/N
MA20A1001-1 and meets the criteria specified in paragraphs (h)(1)
and (h)(2) of this AD.
(k) Exceptions to Service Information
(1) Work Package 9 of the Accomplishment Instructions of Boeing
Service Bulletin 777-28A0034, Revision 2, dated September 20, 2010,
refers to an incorrect part number, P/N V8166; the correct part
number that must be used is P/N V28166.
(2) For airplanes with Airline Information Management System
(AIMS) V1 installed: MOV actuators at the spar valve locations (Work
Packages 1 and 2 of the Accomplishment Instructions of Boeing
Service Bulletin 777-28A0034, Revision 2, dated September 20, 2010),
are not required to be replaced.
(l) Optional Method of Compliance
Replacing all MOV actuators at the main and center fuel tanks,
as specified in Boeing Service Bulletin 777-28A0034, Revision 2,
dated September 20, 2010, with new or serviceable MOV actuators
identified in paragraph (l)(1) or (l)(2) of this AD; and, as
applicable, measuring the electrical resistance of the bond from the
adapter plate to the airplane structure and doing all applicable
corrective actions; in accordance with the Accomplishment
Instructions of Boeing Service Bulletin 777-28A0034, Revision 2,
dated September 20, 2010; is an acceptable method of compliance with
the actions required by paragraph (g) of this AD.
(1) MOV actuators that have P/N MA30A1001.
(2) MOV actuators that have a part number other than P/N
MA20A1001-1 and meet the criteria specified in paragraphs (h)(1) and
(h)(2) of this AD.
(m) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Seattle Aircraft Certification Office (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
[[Page 17294]]
to the manager of the ACO, send it to the attention of the person
identified in the Related Information section of this AD.
Information may be emailed to: 9-ANM-Seattle-ACO-AMOC-Requests@faa.gov.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(3) An AMOC that provides an acceptable level of safety may be
used for any repair required by this AD if it is approved by the
Boeing Commercial Airplanes Organization Designation Authorization
(ODA) that has been authorized by the Manager, Seattle ACO, to make
those findings. For a repair method to be approved, the repair must
meet the certification basis of the airplane, and the approval must
specifically refer to this AD.
(n) Related Information
(1) For more information about this AD, contact Rebel Nichols,
Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, 1601 Lind
Avenue SW., Renton, WA 98057-3356; phone: 425-917-6509; fax: 425-
917-6590; email: rebel.nichols@faa.gov.
(2) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com.
(o) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless the AD specifies otherwise.
(i) Boeing Service Bulletin 777-28A0034, Revision 2, dated
September 20, 2010.
(ii) Reserved.
(3) For service information identified in this AD, contact
Boeing Commercial Airplanes, Attention: Data & Services Management,
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone 206-544-
5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com.
(4) You may view this service information at FAA, Transport
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For
information on the availability of this material at the FAA, call
425-227-1221.
(5) You may view this service information that is incorporated
by reference at the National Archives and Records Administration
(NARA). For information on the availability of this material at
NARA, call 202-741-6030, or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Renton, Washington, on February 25, 2013.
Ali Bahrami,
Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2013-05199 Filed 3-20-13; 8:45 am]
BILLING CODE 4910-13-P