[Federal Register Volume 75, Number 223 (Friday, November 19, 2010)]
[Proposed Rules]
[Pages 70863-70868]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2010-29231]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2008-0090; Directorate Identifier 2007-NM-312-AD]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Model 747 Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Supplemental notice of proposed rulemaking (NPRM); reopening of
comment period.
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SUMMARY: We are revising an earlier proposed airworthiness directive
(AD) for certain Model 747 airplanes. The original NPRM would have
required measuring the electrical bond resistance between the motor
operated valve (MOV) actuators and airplane structure for the main,
center, auxiliary, and horizontal stabilizer fuel tanks, as applicable,
and corrective action if necessary. The original NPRM also would have
required a revision to the maintenance program to incorporate
airworthiness limitation (AWL) No. 28-AWL-21 or AWL No. 28-AWL-27, as
applicable. The original NPRM resulted from fuel system reviews
conducted by the manufacturer. This supplemental NPRM would revise the
original NPRM by adding airplanes to the applicability, and would
require replacing production-installed laminate phenolic spacers with
metallic spacers between the fuel jettison MOV and the airplane
structure, as applicable. We are proposing this supplemental NPRM 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: We must receive comments on this supplemental NPRM by December
14, 2010.
ADDRESSES: You may send comments by any of the following methods:
Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590.
Hand Delivery: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue, SE., Washington, DC 20590, between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays.
For service information identified in this proposed 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
[[Page 70864]]
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.
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 proposed AD, the regulatory
evaluation, any comments received, and other information. The street
address for the Docket Office (telephone 800-647-5527) is in the
ADDRESSES section. Comments will be available in the AD docket shortly
after receipt.
FOR FURTHER INFORMATION CONTACT: Douglas Bryant, 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:
Comments Invited
We invite you to send any written relevant data, views, or
arguments about this proposed AD. Send your comments to an address
listed under the ADDRESSES section. Include ``Docket No. FAA-2008-0090;
Directorate Identifier 2007-NM-312-AD'' at the beginning of your
comments. We specifically invite comments on the overall regulatory,
economic, environmental, and energy aspects of this proposed AD. We
will consider all comments received by the closing date and may amend
this proposed AD because of those comments.
We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We
will also post a report summarizing each substantive verbal contact we
receive about this proposed AD.
Discussion
We issued a notice of proposed rulemaking (NPRM) (the ``original
NPRM'') to amend 14 CFR part 39 to include an airworthiness directive
(AD) that would apply to certain Model 747 airplanes. That original
NPRM was published in the Federal Register on January 31, 2008 (73 FR
5773). That original NPRM proposed to require measuring the electrical
bond resistance between the motor operated valve (MOV) actuators and
airplane structure for the main, center, auxiliary, and horizontal
stabilizer fuel tanks, as applicable, and corrective action if
necessary. That original NPRM also proposed to require a revision to
the maintenance program to incorporate airworthiness limitation (AWL)
No. 28-AWL-21 or AWL No. 28-AWL-27, as applicable.
Actions Since Original NPRM Was Issued
Since we issued the original NPRM, we reviewed Boeing Service
Bulletin 747-28A2292, Revision 2, dated May 13, 2010 (for Model 747-
100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300,
747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes). This
service bulletin clarifies the procedure for measuring the electrical
bond resistance, and adds procedures for replacing production-installed
laminate phenolic spacers with metallic spacers for airplanes in Groups
12, 16, 17, 18, and 19. This service bulletin also adds airplanes to
the Effectivity. Paragraphs (c) and (g) of this supplemental NPRM have
been revised accordingly.
We also reviewed Boeing Service Bulletin 747-28A2294, Revision 1,
dated March 5, 2009 (for Model 747-400 series airplanes equipped with
an active horizontal stabilizer fuel tank). This service bulletin is
the same as the original issue, dated September 21, 2007, except that a
reference to Sub-section 28-17-03 of Boeing 747-400 Airplane
Maintenance Manual (AMM) is corrected in Revision 1.
We reviewed Boeing 747-100/200/300/SP Airworthiness Limitations
(AWLs) and Certification Maintenance Requirements (CMRs), Document D6-
13747-CMR, Revision March 2008 (hereafter referred to as ``Document D6-
13747-CMR''). (We referred to Revision January 2007 of Document D6-
13747-CMR in the original NPRM.) Document D6-13747-CMR revises certain
AWLs for fuel tank systems. However, AWL No. 28-AWL-21, which is
specified in this supplemental NPRM, has not been revised in Document
D6-13747-CMR, Revision March 2008.
We also reviewed the Boeing 747-400 Maintenance Planning Data (MPD)
Document, Section 9, D621U400-9, Revision December 2009 (hereafter
referred to as ``Boeing 747-400 MPD''). Among other things, Subsection
D of Boeing 747-400 MPD has been revised to clarify the
``Applicability'' of AWL No. 28-AWL-27, which is a critical design
configuration control limitation (CDCCL) to maintain the design
features of the MOV actuator.
We have revised this supplemental NPRM to refer to the latest
service information described previously.
Other Relevant Rulemaking
On April 28, 2008, we issued AD 2008-10-07, Amendment 39-15513 (73
FR 25977, May 8, 2008); and on October 30, 2009, we issued AD 2008-10-
07 R1, Amendment 39-16070 (74 FR 56098, November 16, 2009); applicable
to all Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-
200C, 747-200F, 747-300, 747SR, and 747SP series airplanes. Those ADs
require revising the maintenance program by incorporating new AWLs for
fuel tank systems to satisfy Special Federal Aviation Regulation No. 88
(``SFAR 88'') requirements. As an optional action, those ADs also allow
incorporating AWL No. 28-AWL-21 into the maintenance program.
Therefore, we have added a new paragraph (n) to this supplemental NPRM
to specify that incorporating AWL No. 28-AWL-21 into the maintenance
program in accordance with paragraph (g) of AD 2008-10-07 or 2008-10-07
R1 terminates the action required by paragraph (k) of this supplemental
NPRM for the applicable airplanes.
Comments
We gave the public the opportunity to participate in developing
this AD. We considered the comments received from the three commenters.
Request To Allow Use of Future Revisions of the Service Bulletins
Boeing requested that we revise the original NPRM to specify that
the proposed modifications may also be done in accordance with any
future-approved revisions to Boeing Alert Service Bulletin 747-28A2292,
dated September 14, 2007; and Boeing Alert Service Bulletin 747-
28A2294, dated September 21, 2007. As justification, Boeing stated that
these service bulletins could be revised by the time we issue the AD.
We partially agree. As discussed previously, we have revised this
supplemental NPRM to refer to the most recently issued service
information. However, we do not agree to refer to ``later revisions.''
To allow operators to use later revisions of the referenced service
documents, either we must revise the AD to reference specific later
revisions, or operators must request approval to use later revisions as
an alternative method of compliance with the AD. Therefore, we have
removed all references to the use of a ``later revision'' of the
applicable service information from this supplemental NPRM to be
[[Page 70865]]
consistent with FAA policy. We may consider approving the use of later
revisions of the service information as an AMOC with this AD, as
provided by paragraph (q) of this supplemental NPRM.
Request To Revise Paragraphs (h) and (i) of the Original NPRM
KLM Royal Dutch Airlines (KLM) stated that the intent of the
original NPRM is to maintain the design features introduced in
accordance with Boeing Alert Service Bulletin 747-28A2292, dated
September 14, 2007; and Boeing Alert Service Bulletin 747-28A2294,
dated September 21, 2007; respectively; when an MOV actuator is
installed. KLM thought that it was clearer if the NPRM stated that the
CDCCLs must be incorporated into the applicable paragraphs of the AMM
to maintain these design features.
We infer that KLM requests that we revise paragraphs (h) and (i) of
the NPRM as proposed above. We disagree with the commenter's request.
We disagree that incorporating CDCCLs into the AMM is the appropriate
location for a CDCCL. The AMM is not an FAA-approved document. The
appropriate location for a CDCCL is in the FAA-approved section (i.e.,
the Airworthiness Limitations section) of an operator's maintenance
program. We have not changed this supplemental NPRM in this regard.
Request To Exclude a Certain Airplane From the Requirements of
Paragraph (g) of the Original NPRM
Lufthansa requested that we exclude a certain Model 747-400 series
airplane from paragraph (g) of the original NPRM because the horizontal
stabilizer tank (HST) on that airplane has never been activated.
We disagree with the request. Although the HST might not be
activated at this time, it could be activated in the future. We cannot
exclude an airplane from the requirements of this supplemental NPRM
without substantiation that the unsafe condition has been adequately
addressed. We have not changed this supplemental NPRM in this regard.
Request To Extend Compliance Time
Lufthansa requested that we extend the compliance time of the
original NPRM from 60 months to 72 months. Lufthansa stated that this
extension will allow operators to implement the modification at the
next maintenance layover.
KLM requested that we extend the compliance time of the original
NPRM from 60 months to 96 months. KLM stated that tank entry might be
necessary for accomplishing the actions, and KLM wanted to avoid tank
entry during C-checks.
We disagree with the commenters' requests to extend the compliance
time. In developing an appropriate compliance time for this
supplemental NPRM, we considered the urgency associated with the
subject unsafe condition and the practical aspect of accomplishing the
required actions on the Model 747 fleet in a timely manner. We
recognize that operators may have different schedules for accomplishing
heavy maintenance, but at the same time, we find that the 60-month
compliance time will include most operators' schedules for that type of
work. Further, according to the provisions of paragraph (q) of this AD,
we may consider approving requests to adjust the compliance time if
those requests include data that prove that the new compliance time
would provide an acceptable level of safety. No change to this
supplemental NPRM is necessary in this regard.
Other Change Made to This Supplemental NPRM
We have added a new paragraph (m) to this supplemental NPRM to
specify that no alternative CDCCLs may be used unless they are approved
as an AMOC. Inclusion of this paragraph in the supplemental NPRM is
intended to ensure that the AD-mandated airworthiness limitations
changes are treated the same as the airworthiness limitations issued
with the original type certificate.
FAA's Determination and Proposed Requirements of the Supplemental NPRM
We are proposing this supplemental NPRM because we evaluated all
pertinent information and determined an unsafe condition exists and is
likely to exist or develop on other products of the same type design.
Certain changes described above expand the scope of the original NPRM.
As a result, we have determined that it is necessary to reopen the
comment period to provide additional opportunity for the public to
comment on this supplemental NPRM.
Explanation of Change to Costs of Compliance
Since issuance of the original NPRM, we have increased the labor
rate used in the Costs of Compliance form $80 per work-hour to $85 per
work-hour. The Costs of Compliance information, below, reflects this
increase in the specified hourly labor rate.
For convenience to the operator, the Estimated Costs table, below,
was revised to break out the cost of replacing the spacers and the on-
condition costs.
Costs of Compliance
We estimate that this proposed AD will affect 222 airplanes of U.S.
registry.
We estimate the following costs to comply with this proposed AD:
Estimated Costs
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Cost on U.S.
Action Labor cost Parts cost Cost per product operators
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Measurement.................... Up to 7 work-hours x Up to $350....... Up to $945....... Up to $209,790.
$85 per hour = Up to
$595.
Replacement (Up to 60 Up to 4 work-hours x $1,305........... Up to $1,645..... Up to $98,700.
airplanes). $85 per hour = Up to
$340.
Maintenance program revision... 1 work-hour x $85 per $0............... $85.............. $18,870.
hour = $85.
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We estimate the following costs to do any necessary modification
that would be required based on the results of the proposed inspection.
We have no way of determining the number of aircraft that might need
this modification:
[[Page 70866]]
On-Condition Costs
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Action Labor cost Parts cost Cost per product
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Change electrical bond and rework 436 work-hours x $85 Up to $35,760........ Up to $72,820.
part contact surface. per hour = $37,060.
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Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. ``Subtitle VII: Aviation
Programs,'' describes in more detail the scope of the Agency's
authority.
We are issuing this rulemaking under the authority described in
``Subtitle VII, Part A, Subpart III, Section 44701: General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
Regulatory Findings
We determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
1. Is not a ``significant regulatory action'' under Executive Order
12866,
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979), and
3. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
You can find our regulatory evaluation and the estimated costs of
compliance in the AD Docket.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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.
Sec. 39.13 [Amended]
2. The FAA amends Sec. 39.13 by adding the following new AD:
The Boeing Company: Docket No. FAA-2008-0090; Directorate Identifier
2007-NM-312-AD.
Comments Due Date
(a) We must receive comments by December 14, 2010.
Affected ADs
(b) None.
Applicability
(c) This AD applies to The Boeing Company Model 747-100, 747-
100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747-400,
747-400D, 747-400F, 747SR, and 747SP series airplanes, certificated
in any category; as identified in Boeing Service Bulletin 747-
28A2292, Revision 2, dated May 13, 2010.
Note 1: This AD requires revisions to certain operator
maintenance documents to include new inspections. Compliance with
these inspections is required by 14 CFR 91.403(c). For airplanes
that have been previously modified, altered, or repaired in the
areas addressed by these inspections, the operator may not be able
to accomplish the inspections described in the revisions. In this
situation, to comply with 14 CFR 91.403(c), the operator must
request approval for an alternative method of compliance (AMOC)
according to paragraph (q) of this AD. The request should include a
description of changes to the required inspections that will ensure
the continued operational safety of the airplane.
Subject
(d) Air Transport Association (ATA) of America Code 28: Fuel.
Unsafe Condition
(e) 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.
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.
Measurement, Corrective Action, and Replacement
(g) Within 60 months after the effective date of this AD, do the
actions required by paragraphs (g)(1) and (g)(2) of this AD, as
applicable.
(1) Measure the electrical bond resistance between the MOV
actuators and the airplane structure for the main, center, and
auxiliary fuel tanks, as applicable; and do all applicable
corrective actions; by accomplishing all of the applicable actions
in the Accomplishment Instructions of Boeing Service Bulletin 747-
28A2292, Revision 2, dated May 13, 2010. The corrective actions must
be accomplished before further flight.
(2) For airplanes in Groups 12, 16, 17, 18, and 19, as
identified in Boeing Service Bulletin 747-28A2292, Revision 2, dated
May 13, 2010: Within 60 months after the effective date of this AD,
replace production-installed laminate phenolic spacers with metallic
spacers, in accordance with the Accomplishment Instructions of
Boeing Service Bulletin 747-28A2292, Revision 2, dated May 13, 2010.
(h) For airplanes identified in Boeing Service Bulletin 747-
28A2294, Revision 1, dated March 5, 2009: Within 60 months after the
effective date of this AD, measure the electrical bond resistance
between the MOV actuators and airplane structure for the horizontal
stabilizer (HST) fuel tanks, and do all the applicable corrective
actions, in accordance with the Accomplishment Instructions of
Boeing Service Bulletin 747-28A2294, Revision 1, dated March 5,
2009. The corrective actions must be accomplished before further
flight.
Deactivation of the HST
(i) For airplanes identified in Boeing Service Bulletin 747-
28A2294, Revision 1, dated March 5, 2009: Deactivation of the HST,
in accordance with the applicable Boeing service information
specified in Table 1 of this AD, terminates the requirements of
paragraph (h) of this AD, except as provided by paragraph (j) of
this AD. Deactivation of the HST before the effective date of this
AD in accordance with the applicable service information specified
in Table 2 of this AD also terminates the requirements of paragraph
(h) of this AD, except as provided by paragraph (j) of this AD.
[[Page 70867]]
Table 1--Deactivation Service Information
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Boeing-- Revision-- Dated--
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Service Bulletin 747-28-2265. Original........ February 22, 2006.
Service Bulletin 747-28-2272. Original........ February 21, 2006.
Service Bulletin 747-28-2274. 1............... May 21, 2008.
Service Bulletin 747-28-2275. 4............... February 2, 2009.
Service Bulletin 747-28-2279. 2............... October 16, 2007.
Service Bulletin 747-28-2285. 3............... August 30, 2007.
Service Bulletin 747-28-2293. 2............... March 4, 2008.
Service Bulletin 747-28-2295. 2............... January 19, 2009.
Service Bulletin 747-28-2296. Original........ July 13, 2007.
Service Bulletin 747-28-2300. 1............... June 2, 2008.
Service Bulletin 747-28-2314. Original........ December 9, 2008.
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Table 2--Deactivation Credit Service Information
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Boeing-- Revision-- Dated--
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Service Bulletin 747-28-2274. Original........ March 13, 2006.
Service Bulletin 747-28-2275. Original........ June 12, 2006.
Service Bulletin 747-28-2275. 1............... March 16, 2007.
Service Bulletin 747-28-2275. 2............... July 2, 2007.
Service Bulletin 747-28-2275. 3............... March 11, 2008.
Service Bulletin 747-28-2279. Original........ June 12, 2006.
Service Bulletin 747-28-2279. 1............... May 25, 2007.
Service Bulletin 747-28-2285. Original........ January 23, 2007.
Service Bulletin 747-28-2285. 1............... May 9, 2007.
Service Bulletin 747-28-2285. 2............... August 3, 2007.
Service Bulletin 747-28-2293. Original........ May 9, 2007.
Service Bulletin 747-28-2293. 1............... August 29, 2007.
Service Bulletin 747-28-2295. Original........ November 17, 2006.
Service Bulletin 747-28-2295. 1............... March 20, 2008.
Service Bulletin 747-28-2300. Original........ January 16, 2008
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Reactivation of the HST
(j) For airplanes identified Boeing Service Bulletin 747-
28A2294, Revision 1, dated March 5, 2009, on which the HST is
reactivated, the HST must be reactivated in accordance with a method
approved by the Manager, Seattle Aircraft Certification Office
(ACO), FAA. For any airplane on which the HST is reactivated, the
requirements of paragraphs (h) and (l) of this AD must be done
before further flight following the reactivation, or within 60
months after the effective date of this AD, whichever occurs later.
For a reactivation method to be approved, the reactivation method
must meet the certification basis of the airplane, and the approval
must specifically reference this AD.
Maintenance Program Revision
(k) For Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-
200C, 747-200F, 747-300, 747SR, and 747SP series airplanes:
Concurrently with accomplishing the actions required by paragraph
(g) of this AD, revise the maintenance program by incorporating
airworthiness limitation (AWL) No. 28-AWL-21 of Section D of Boeing
747-100/200/300/SP Airworthiness Limitations (AWLs) and
Certification Maintenance Requirements (CMRs), Document D6-13747-
CMR, Revision March 2008.
(l) For Model 747-400, 747-400D, and 747-400F series airplanes:
Concurrently with accomplishing the actions required by paragraph
(g) of this AD, revise the maintenance program by incorporating AWL
No. 28-AWL-27 of Subsection D of Boeing 747-400 Maintenance Planning
Data (MPD) Document, Section 9, D621U400-9, Revision December 2009.
No Alternative Critical Design Configuration Control Limitations
(CDCCLs)
(m) After accomplishing the applicable action required in
paragraph (k) or (l) of this AD, no alternative CDCCLs may be used
unless the CDCCLs are approved as an AMOC in accordance with the
procedures specified in paragraph (q) of this AD.
Terminating Action for Maintenance Program Revision
(n) For Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-
200C, 747-200F, 747-300, 747SR, and 747SP series airplanes:
Incorporating AWL No. 28-AWL-21 into the maintenance program in
accordance with paragraph (g) of AD 2008-10-07, Amendment 39-15513;
or AD 2008-10-07 R1, Amendment 39-16070; terminates the action
required by paragraph (k) of this AD.
Actions Accomplished According to Previous Issue of Service Bulletin
(o) Actions done before the effective date of this AD, in
accordance with Boeing Alert Service Bulletin 747-28A2294, dated
September 21, 2007, are acceptable for compliance with the
corresponding requirements of this AD.
Incorporation of Previous Issues of Airworthiness Limitation (AWL)
(p) Incorporation of AWL No. 28-AWL-21 of Section D of the
Boeing 747-100/200/300/SP Airworthiness Limitations (AWLs) and
Certification Maintenance Requirements (CMRs), Document D6-13747-
CMR, Revision January 2007, September 2007, or January 2008, is
acceptable for compliance with the corresponding requirements of
this AD if done before the effective date of this AD.
Alternative Methods of Compliance (AMOCs)
(q)(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. Send information to
ATTN: Douglas Bryant, 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) To request a different method of compliance or a different
compliance time for this AD, follow the procedures in 14 CFR 39.19.
Before using any approved AMOC on any airplane to which the AMOC
applies, notify your principal maintenance inspector (PMI) or
principal avionics inspector (PAI), as appropriate, or lacking a
principal inspector, your local Flight Standards District
[[Page 70868]]
Office. The AMOC approval letter must specifically reference this
AD.
ssued in Renton, Washington on November 10, 2010.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2010-29231 Filed 11-18-10; 8:45 am]
BILLING CODE 4910-13-P