Document ID: FAA-2013-0215-0001
Agency: faa
Document Type: Proposed Rule
Title: Airworthiness Directives: The Boeing Company Airplanes
Posted Date: 2013-03-28T04:00Z

[Federal Register Volume 78, Number 60 (Thursday, March 28, 2013)]
[Proposed Rules]
[Pages 18922-18925]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2013-07213]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2013-0215; Directorate Identifier 2012-NM-132-AD]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain The Boeing Company Model 707-300, 707-300B, and 707-300C series 
airplanes; and certain Model 727C, 727-100C, and 727-200F series 
airplanes. This proposed AD was prompted by a report that a cam latch 
on the main cargo door (MCD) broke during flight. This proposed AD 
would require performing repetitive inspections of the MCD cam latches; 
replacing cam latches, certain bolts, and door hinge fittings; 
performing related investigative and corrective actions, if necessary; 
and MCD rigging. We are proposing this AD to detect and correct cracked 
or damaged cam latches, latch pins, and latch pin cross bolts, which 
could reduce the structural integrity of the MCD, and result in rapid 
decompression of the airplane and potential loss of the MCD during 
flight.

DATES: We must receive comments on this proposed AD by May 13, 2013.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, 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: Deliver to Mail address above 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, 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 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 (phone: 800-647-5527) is in the ADDRESSES 
section. Comments will be available in the AD docket shortly after 
receipt.

FOR FURTHER INFORMATION CONTACT: Kimberly A. DeVoe, Aerospace Engineer, 
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, 1601 Lind 
Avenue SW., Renton, WA 98057-3356; phone: 425-917-6495; fax: 425-917-
6590; email: kimberly.devoe@faa.gov.

SUPPLEMENTARY INFORMATION: 

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2013-0215; 
Directorate Identifier 2012-NM-132-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 received a report that the forward-most cam latch on the forward 
center cam latch pair (cam latch number 3) on the MCD broke during 
flight on a Model 757 airplane. That airplane had accumulated 20,000 
total flight hours and 9,500 total flight cycles when the cam latch 
broke.
    Certain Model 707-300, 707-300B, and 707-300C series airplanes; and 
certain Model 727C, 727-100C, and 727-200F series airplanes; have an 
MCD with a similar design to the MCD on the Model 757 airplane. 
Therefore, those Model 707-300, 707-300B, and 707-300C series 
airplanes; and Model 727C, 727-100C, and 727-200F series airplanes; 
might be subject to the unsafe condition revealed on Model 757 
airplanes.
    The MCD is an outward-hinging door that requires a locking 
mechanism to keep the door closed. The latch pins in the lower sill of 
the MCD interlock with the cam latches installed in the bottom of the 
MCD. When a latch pin interlocks with a cam latch, the cam latch 
rotates into the closed position and holds the door closed. We are 
proposing this AD to detect and correct cracked or damaged cam latches, 
latch pins, and latch pin cross bolts, which could reduce the 
structural integrity of the MCD, and result in rapid decompression of 
the airplane and potential loss of the MCD during flight.

Relevant Service Information

    We reviewed Boeing 707 Alert Service Bulletin A3536, dated February 
6, 2012 (for Model 707-300, 707-300B, and 707-300C series airplanes); 
and Boeing Alert Service Bulletin 727-52A0150, dated January 30, 2012 
(for Model 727C, 727-100C, and 727-200F series airplanes). For 
information on the procedures and compliance times, see this service 
information at http://www.regulations.gov by searching for Docket No. 
FAA-2013-0215.

Concurrent Service Information

    Boeing 707 Alert Service Bulletin A3536, dated February 6, 2012 
(for Model 707-300, 707-300B, and 707-300C series airplanes), specifies 
concurrent or prior accomplishment of Boeing 707/720 Service Bulletin 
3477, Revision 2, dated April 15, 1993 (for Model 707-300, 707-300B, 
and 707-300C series airplanes). Boeing Alert Service Bulletin 727-
52A0150, dated January 30, 2012 (for Model 727C, 727-100C, and 727-200F 
series airplanes), specifies concurrent or prior accomplishment of 
Boeing Service Bulletin 727-52-0142, Revision 2, dated April 15, 1993 
(for Model 727-100C and 727-200F series airplanes). For information on 
the procedures, see this service information at http://

[[Page 18923]]

www.regulations.gov by searching for Docket No. FAA-2013-0215.

Other Relevant Rulemaking

    On October 7, 1991, the FAA issued AD 91-22-04, Amendment 39-8064 
(56 FR 55223, October 25, 1991), for Model 707/720, 727-100C, and 727-
200F series airplanes. That AD requires the use of certain special 
operating procedures for the MCD, and the inspection, necessary repair, 
and eventual replacement of MCD cam latches, cam latch bellcranks, and 
pressure relief door hinge fittings in accordance with the 
Accomplishment Instructions of Boeing Service Bulletin 3477, dated July 
26, 1990 (for Model 707/720 series airplanes); or Boeing Service 
Bulletin 727-52-0142, dated July 26, 1990 (for Model 727 series 
airplanes). For this proposed AD, those actions must be accomplished 
concurrently with the Accomplishment Instructions of Boeing 707/720 
Service Bulletin 3477, Revision 2, dated April 15, 1993 (for Model 707-
300, 707-300B, and 707-300C series airplanes); or Boeing Service 
Bulletin 727-52-0142, Revision 2, dated April 15, 1993 (for Model 727-
100C and 727-200F series airplanes).

FAA's Determination

    We are proposing this AD because we evaluated all the relevant 
information and determined the unsafe condition described previously is 
likely to exist or develop in other products of these same type 
designs.

Proposed AD Requirements

    This proposed AD would require accomplishing the actions specified 
in the service information described previously under ``Relevant 
Service Information,'' except as discussed under ``Differences Between 
the Proposed AD and the Service Information.''
    The phrase ``related investigative actions'' might be used in this 
proposed AD. ``Related investigative actions'' are follow-on actions 
that (1) are related to the primary actions, and (2) are actions that 
further investigate the nature of any condition found. Related 
investigative actions in an AD could include, for example, inspections.
    In addition, the phrase ``corrective actions'' might be used in 
this proposed AD. ``Corrective actions'' are actions that correct or 
address any condition found. Corrective actions in an AD could include, 
for example, repairs.

Differences Between the Proposed AD and the Service Information

    Although Boeing 707 Alert Service Bulletin A3536, dated February 6, 
2012 (for Model 707-300, 707-300B, and 707-300C series airplanes); and 
Boeing Alert Service Bulletin 727-52A0150, dated January 30, 2012 (for 
Model 727C, 727-100C, and 727-200F series airplanes); specify that 
operators may contact the manufacturer for disposition of certain 
repair conditions, this proposed AD would require operators to repair 
those conditions using a method approved by the FAA.

Costs of Compliance

    We estimate that this proposed AD affects 18 airplanes of U.S. 
registry. We estimate the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                   Labor cost          Parts cost       Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Inspection/Torque/Measurement...  3 work-hours x $85  $0................  $255..............  $4,590.
                                   per hour = $255.
MCD Modification................  48 work-hours x     Up to $8,821 \1\..  Up to $12,901.....  Up to $232,218.
                                   $85 per hour =
                                   $4,080.
----------------------------------------------------------------------------------------------------------------
\1\ Special tooling is available from the airplane manufacturer; $8,821 is the purchase price and $180 per day
  is the rental rate.

    We estimate the following costs to do any necessary replacements 
that would be required based on the results of the proposed 
inspections. We have no way of determining the number of aircraft that 
might need these replacements:

                           On-Condition Costs
------------------------------------------------------------------------
                                                 Parts       Cost per
            Action                Labor cost      cost       product
------------------------------------------------------------------------
Replace Cross Bolts..........  3 work-hours x        $0  $255.
                                $85 per hour =
                                $255.
Replace Cam Latch/Latch Pin..  1 work-hour x          0  $85 per latch/
                                $85 per hour =            pin.
                                $85.
Repetitive Inspections.......  3 work-hours x         0  $255 per
                                $85 = $255 per            inspection
                                inspection                cycle.
                                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

    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),
    (3) Will not affect intrastate aviation in Alaska, and

[[Page 18924]]

    (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.

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

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):

The Boeing Company: Docket No. FAA-2013-0215; Directorate Identifier 
2012-NM-132-AD.

(a) Comments Due Date

    We must receive comments by May 13, 2013.

(b) Affected ADs

    None.

(c) Applicability

    The Boeing Company airplanes, certificated in any category, as 
identified in paragraphs (c)(1) and (c)(2) of this AD.
    (1) Model 707-300, 707-300B, and 707-300C series airplanes, as 
identified in Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012.
    (2) Model 727C, 727-100C, and 727-200F series airplanes, as 
identified in Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012.

(d) Subject

    Joint Aircraft System Component (JASC)/Air Transport Association 
(ATA) of America Code 52, Doors.

(e) Unsafe Condition

    This AD was prompted by a report that a cam latch on the main 
cargo door (MCD) broke during flight. We are issuing this AD to 
detect and correct cracked or damaged cam latches, latch pins, and 
latch pin cross bolts, which could affect the structural integrity 
of the MCD, and result in rapid decompression of the airplane and 
potential loss of the MCD during flight.

(f) Compliance

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

(g) MCD Inspections, Bolt Torque, Latch Pin Measurement, Bolt 
Replacement, and Rigging

    At the applicable times specified in table 1 of paragraph 1.E., 
``Compliance,'' of Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes); except as provided by paragraph (k)(1) of this AD: Do a 
detailed inspection of the MCD to detect damage, distress, and 
incorrect rigging; torque the cross bolts; measure the extension of 
the latch pins; replace all alloy steel bolts used as latch pin 
cross bolts with corrosion resistant steel bolts; rig the MCD, as 
applicable; and do all applicable related investigative and 
corrective actions, except as required by paragraph (k)(2) of this 
AD; in accordance with the Accomplishment Instructions of Boeing 707 
Alert Service Bulletin A3536, dated February 6, 2012 (for Model 707-
300, 707-300B, and 707-300C series airplanes); or Boeing Alert 
Service Bulletin 727-52A0150, dated January 30, 2012 (for Model 
727C, 727-100C, and 727-200F series airplanes). Do all applicable 
related investigative and corrective actions at the applicable time 
specified in paragraph 1.E., ``Compliance,'' of Boeing 707 Alert 
Service Bulletin A3536, dated February 6, 2012 (for Model 707-300, 
707-300B, and 707-300C series airplanes); or Boeing Alert Service 
Bulletin 727-52A0150, dated January 30, 2012 (for Model 727C, 727-
100C, and 727-200F series airplanes).

(h) Repetitive Inspections

    Repeat the applicable inspections specified in paragraph (g) of 
this AD, as identified in paragraphs (h)(1), (h)(2), and (h)(3) of 
this AD, at the applicable times specified in table 1 of paragraph 
1.E., ``Compliance,'' of Boeing 707 Alert Service Bulletin A3536, 
dated February 6, 2012 (for Model 707-300, 707-300B, and 707-300C 
series airplanes); or Boeing Alert Service Bulletin 727-52A0150, 
dated January 30, 2012 (for Model 727C, 727-100C, and 727-200F 
series airplanes). The Inspection Conditions are defined in Boeing 
707 Alert Service Bulletin A3536, dated February 6, 2012 (for Model 
707-300, 707-300B, and 707-300C series airplanes); and Boeing Alert 
Service Bulletin 727-52A0150, dated January 30, 2012 (for Model 
727C, 727-100C, and 727-200F series airplanes).
    (1) For airplanes found with Inspection Condition 2 or 4.2: 
Repeat the detailed inspection of the cam latches and cam pins for 
damage, distress, and incorrect rigging.
    (2) For airplanes found with Inspection Condition 4.1: Repeat 
the general visual inspection of the cam latch for broken, cracked, 
missing, or migrated parts.
    (3) For airplanes found with Inspection Condition 5: Do the 
actions specified in paragraphs (h)(3)(i), (h)(3)(ii), and 
(h)(3)(iii) of this AD.
    (i) Repeat the general visual inspection of the cam latch for 
broken, cracked, missing, or migrated parts.
    (ii) Repeat the detailed inspection of the cam latches and cam 
pins for damage, distress, or incorrect rigging.
    (iii) Repeat the high frequency eddy current (HFEC) or magnetic 
particle inspection of cam latch 1 and cam latch 2 for cracking.

(i) MCD Post-Rigging Initial Inspections and Related Investigative and 
Corrective Actions

    At the applicable times specified in table 2 of paragraph 1.E., 
``Compliance,'' of Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes); except as provided by paragraph (k)(1) of this AD: Do a 
general visual inspection of the cam latches and latch pins for 
discrepancies; a detailed inspection of the cam latches and latch 
pins for discrepancies; and an HFEC or magnetic particle inspection 
of cam latch 1 and cam latch 2 for cracking; and do all applicable 
related investigative and corrective actions, except as required by 
paragraph (k)(2) of this AD; in accordance with the Accomplishment 
Instructions of Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes). Do all applicable related investigative and corrective 
actions at the applicable time specified in paragraph 1.E., 
``Compliance,'' of Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes).

(j) MCD Post-Rigging Repetitive Inspections

    Repeat the applicable inspections specified in paragraph (i) of 
this AD, as identified in paragraph (j)(1) or (j)(2) of this AD, at 
the applicable times specified in table 2 of paragraph 1.E., 
``Compliance,'' of Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727 -200F series 
airplanes). The Inspection Conditions are defined in Boeing 707 
Alert Service Bulletin A3536, dated February 6, 2012 (for Model 707-
300, 707-300B, and 707-300C series airplanes); and Boeing Alert 
Service Bulletin 727-52A0150, dated January 30, 2012 (for Model 
727C, 727-100C, and 727-200F series airplanes).
    (1) For airplanes that have completed the MCD rigging: Do the 
actions specified in paragraphs (j)(1)(i), (j)(1)(ii), and 
(j)(1)(iii) of this AD.
    (i) Repeat the general visual inspection of the cam latches and 
latch pins for discrepancies.
    (ii) Repeat the detailed inspection of the cam latches and latch 
pins for discrepancies.
    (iii) Repeat the HFEC or magnetic particle inspection of cam 
latch 1 and cam latch 2 for cracking.
    (2) For airplanes found with Inspection Condition 2: Do the 
actions specified in paragraphs (j)(2)(i) and (j)(2)(ii) of this AD.

[[Page 18925]]

    (i) Repeat the detailed inspection of the cam latches and latch 
pins for damage, distress, or incorrect rigging.
    (ii) Repeat the HFEC or magnetic particle inspection of cam 
latch 1 and cam latch 2 for cracking.

(k) Exceptions to Service Bulletin Specifications

    The following exceptions apply to this AD.
    (1) Where Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes); specifies a compliance time relative to the issue date 
of that service bulletin, this AD requires compliance within the 
specified compliance time after the effective date of this AD.
    (2) Where Boeing 707 Alert Service Bulletin A3536, dated 
February 6, 2012 (for Model 707-300, 707-300B, and 707-300C series 
airplanes); or Boeing Alert Service Bulletin 727-52A0150, dated 
January 30, 2012 (for Model 727C, 727-100C, and 727-200F series 
airplanes); specifies to contact Boeing for appropriate action: At 
the applicable time specified in paragraph 1.E., ``Compliance,'' of 
Boeing 707 Alert Service Bulletin A3536, dated February 6, 2012 (for 
Model 707-300, 707-300B, and 707-300C series airplanes); or Boeing 
Alert Service Bulletin 727-52A0150, dated January 30, 2012 (for 
Model 727C, 727-100C, and 727-200F series airplanes); repair in 
accordance with a method approved by the Manager, Seattle Aircraft 
Certification Office (ACO), FAA. 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.

(l) Concurrent Actions

    (1) For airplanes identified in Boeing 707 Alert Service 
Bulletin A3536, dated February 6, 2012: Before or concurrently with 
accomplishment of the detailed inspection specified in paragraph (g) 
of this AD, do a general visual inspection of the hinge fittings and 
the cam latches on the MCD, and perform related investigative and 
corrective actions as applicable, in accordance with the 
Accomplishment Instructions of Boeing 707/720 Service Bulletin 3477, 
Revision 2, dated April 15, 1993.
    (2) For airplanes identified in Boeing Alert Service Bulletin 
727-52A0150, dated January 30, 2012: Before or concurrently with 
accomplishment of the detailed inspection specified in paragraph (g) 
of this AD, do a general visual inspection of the hinge fittings and 
the cam latches on the MCD, and perform related investigative and 
corrective actions if applicable, in accordance with the 
Accomplishment Instructions of Boeing Service Bulletin 727-52-0142, 
Revision 2, dated April 15, 1993.

(m) Optional Terminating Action

    Accomplishment of the latch mechanism adjustment test and the 
MCD rigging, in accordance with the Accomplishment Instructions of 
Boeing 707 Alert Service Bulletin A3536, dated February 6, 2012 (for 
Model 707-300, 707-300B, and 707-300C series airplanes); or Boeing 
Alert Service Bulletin 727-52A0150, dated January 30, 2012 (for 
Model 727C, 727-100C, and 727-200F series airplanes); terminates the 
repetitive inspections specified in paragraph (h) of this AD. 
Thereafter, do the MCD post-rigging initial inspections and 
applicable related investigative and corrective actions specified in 
paragraph (i) of this AD, and the repetitive inspections specified 
in paragraph (j) of this AD.

(n) Parts Installation Prohibition

    As of the effective date of this AD, no person may install an 
alloy steel bolt as a cross bolt through any latch pin fitting 
assembly in the lower sill of the MCD on any airplane.

(o) Alternative Methods of Compliance (AMOCs)

    (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 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.

(p) Related Information

    (1) For more information about this AD, contact Kimberly A. 
DeVoe, Aerospace Engineer, Cabin Safety and Environmental Systems 
Branch, ANM-150S, FAA, 1601 Lind Avenue SW., Renton, WA 98057-3356; 
phone: 425-917-6495; fax: 425-917-6590; email: 
kimberly.devoe@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. 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.

    Issued in Renton, Washington, on March 21, 2013.
Jeffrey E. Duven,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2013-07213 Filed 3-27-13; 8:45 am]
BILLING CODE 4910-13-P