Document ID: FAA-2017-0905-0013
Agency: faa
Document Type: Rule
Title: Airworthiness Directives: The Boeing Company Airplanes
Posted Date: 2018-10-03T04:00Z

[Federal Register Volume 83, Number 192 (Wednesday, October 3, 2018)]
[Rules and Regulations]
[Pages 49780-49784]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2018-21346]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2017-0905; Product Identifier 2017-NM-090-AD; Amendment 
39-19424; AD 2018-19-23]
RIN 2120-AA64

Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: We are superseding Airworthiness Directive (AD) 2013-01-02, 
which applied to certain 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; and Model 757-200, 757-
200PF, and 757-300 series airplanes. AD 2013-01-02 required replacing 
the control switches of certain cargo doors. This AD requires 
replacement of certain cargo door control switches with a new, improved 
switch; installation of an arm switch in certain cargo doors; 
operational and functional tests; and applicable on-condition actions. 
This AD also adds airplanes to the applicability. This AD was prompted 
by reports of uncommanded cargo door operation. We are issuing this AD 
to address the unsafe condition on these products.

DATES: This AD is effective November 7, 2018.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of November 7, 
2018.

ADDRESSES: For service information identified in this final rule, 
contact Boeing Commercial Airplanes, Attention: Contractual & Data 
Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal Beach, CA 
90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com. You may view this service information at the 
FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, WA. 
For information on the availability of this material at the FAA, call 
206-231-3195. It is also available on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0905.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2017-
0905; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the regulatory evaluation, any comments received, and 
other information. The address for Docket Operations (phone: 800-647-
5527) is Docket Operations, 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: Susan L. Monroe, Aerospace Engineer, 
Cabin Safety and Environmental Systems Section, FAA, Seattle ACO 
Branch, 2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-
231-3570; email: [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 to supersede AD 2013-01-02, Amendment 39-17316 (78 FR 4051, 
January 18, 2013) (``AD 2013-01-02''). AD 2013-01-02 applied to certain 
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; and Model 757-200, 757-200PF, and 757-300 
series airplanes. The NPRM published in the Federal Register on October 
6, 2017 (82 FR 46722). The NPRM was prompted by reports of uncommanded 
cargo door operation. The NPRM proposed to require replacement of 
certain cargo door control switches with a new, improved switch; 
installation of an arm switch in certain cargo doors; operational and 
functional tests; and applicable on-condition actions. The NPRM also 
proposed to add airplanes to the applicability. We are issuing this AD 
to prevent failures of the cargo door control switch from allowing 
uncommanded movement of the cargo door, which, if not corrected, could 
lead to injuries to persons and damage to the airplane.

Comments

    We gave the public the opportunity to participate in developing 
this AD. The following presents the comments received on the NPRM and 
the FAA's response to each comment.

Support for the NPRM

    FedEx Express and United Airlines (UAL) stated they had no 
technical objection to the NPRM.

Request To Withdraw the NPRM

    Three commenters requested that the NPRM be withdrawn. Virgin 
Atlantic Airlines (VAA) and Deutsche Lufthansa AG (DLH) pointed out 
there have been no reported failures of the cargo door control switches 
or incidents of uncommanded door operation at VAA or DLH since AD 2013-
01-02 was issued. United Parcel Service (UPS) stated that the NPRM 
appears to be based on a single event of an otherwise reliable cargo 
door switch configuration, based on industry data that show no 
significant number of unscheduled removals reported since AD 2013-01-02 
was issued. DLH commented that the operational area of the cargo door 
is a safety critical area that requires the operator to verify that the 
area is safe and clear, whether an additional arm switch is present or 
not. All commenters stated that the repetitive inspections required by 
AD 2013-01-02 should remain in place and that accomplishing the actions 
in Boeing Special Attention Service Bulletin 747-52-2307, dated May 23, 
2017; and Boeing Special Attention Service Bulletin 747-52-2308, dated 
June 5, 2017; should be an optional terminating action for the 
inspections.
    We disagree with the commenters' request because our risk analysis 
indicates that the actions mandated by AD 2013-01-02 were inadequate to 
mitigate the unsafe condition. Although VAA and DLH have had no new 
incidents, there have been multiple reports of uncommanded cargo door 
operation within the affected fleets. Therefore, existing procedures 
for door operation have not been adequate to prevent the unsafe 
condition. We are mandating the actions in this AD because an unsafe 
condition exists, which is likely to exist or develop on other products 
of the same type design. We have not changed this AD in this regard.

[[Page 49781]]

Request To Specify Compliance Times Using Flight Cycles

    UPS requested that we specify compliance times in terms of flight 
cycles rather than calendar time because cargo door operation is based 
on flight cycles. UPS also stated that the compliance interval for both 
Model 747 and 757 fleets should be the same because the operation of 
the cargo door control switch is the same across both models. UPS 
recommended replacing the cargo door control switches every 3,000 
flight cycles.
    We disagree with the commenter's request because we have not 
confirmed a causal relationship between switch failure and operating 
cycles. In developing the compliance time in this AD, we have 
considered the safety implications, parts availability, and normal 
maintenance schedules for the timely installation of the cargo door 
control switches. Further, the compliance time in this AD corresponds 
with the manufacturer's recommended compliance time for each model. If 
we receive additional data that justify a different compliance time, we 
may consider further rulemaking on this issue. In addition, under the 
provisions of paragraph (j) of this AD, we will consider requests for 
approval of alternative compliance times if sufficient data are 
submitted to substantiate that the change would provide an acceptable 
level of safety. We have not changed this AD in this regard.

Request To Include Latest Service Information Revision

    AAL, Delta Airlines (DAL), and FedEx Express requested that we 
refer to Boeing Special Attention Service Bulletin 757-52-0093, 
Revision 2, dated November 14, 2017, instead of Boeing Special 
Attention Service Bulletin 757-52-0093, Revision 1, dated April 21, 
2017, which is referenced in the NPRM. DAL stated that the revised 
service information allows alternatives to Alodine 1200 and 1200S. AAL 
noted that paragraphs (c)(4) and (g)(4) of the proposed AD would no 
longer be necessary as the new service information addresses those 
issues. AAL also requested that we provide credit for Boeing Special 
Attention Service Bulletin 757-52-0093, Revision 1, dated April 21, 
2017.
    We agree with the commenters' request. Boeing Special Attention 
Service Bulletin 757-52-0093, Revision 2, dated November 14, 2017, 
provides minor corrections, and there is no effect on airplanes on 
which earlier revisions were done. Boeing Special Attention Service 
Bulletin 757-52-0093, Revision 2, dated November 14, 2017, also adds 
variable numbers NP901 through NP904 inclusive to the effectivity. We 
had referred to those variable numbers in paragraphs (c)(4) and (g)(4) 
of the proposed AD. Therefore, we have made the following changes to 
this AD:
     Changed paragraphs (c)(3) and (g)(3) of this AD to refer 
to Boeing Special Attention Service Bulletin 757-52-0093, Revision 2, 
dated November 14, 2017.
     Removed paragraphs (c)(4) and (g)(4) of the proposed AD.
     Changed this AD to provide credit for certain actions done 
before the effective date of this AD using Boeing Special Attention 
Service Bulletin 757-52-0093, Revision 1, dated April 21, 2017 
(reference paragraph (i)(3) of this AD).

Request To Extend Compliance Time

    Multiple commenters requested that we extend the compliance times 
in the proposed AD. DLH requested we extend the compliance time on the 
Model 747 airplanes from 35 months to 72 months because there have been 
no recorded cargo door control switch failures since AD 2013-01-02 was 
issued. American Airlines (AAL) requested that for the requirement to 
replace the cargo door control switches on Model 757 airplane cargo 
doors 1 and 2, we extend the compliance time from 24 months to 36 
months. AAL explained that new cargo door control switches will have 
already been installed as part of compliance with AD 2013-01-02, and 
proposed accomplishing a functional check of the cargo door control 
switch every 12 months until cargo door control switches are replaced 
in accordance with Boeing Special Attention Service Bulletin 757-52-
0093, Revision 2, dated November 14, 2017.
    We disagree with extending the compliance times in this AD because 
we have determined that the replacements required by AD 2013-01-02 are 
inadequate, and that new, improved switches are necessary to address 
the unsafe condition. In developing the compliance times in this AD, we 
have considered the safety implications, parts availability, and normal 
maintenance schedules for the timely installation of the cargo door 
control switches. Further, the compliance times in this AD correspond 
with the manufacturer's recommended compliance time for each model. If 
we receive additional data that justify different compliance times, we 
may consider further rulemaking on this issue. In addition, under the 
provisions of paragraph (j) of this AD, we will consider requests for 
approval of alternative compliance times if sufficient data are 
submitted to substantiate that the change would provide an acceptable 
level of safety. We have not changed this AD in this regard.

Request for Relief Due to Parts Availability

    Cathay requested a non-specific extension of the compliance times 
due to parts availability issues. Cathay stated that paragraphs (g)(1) 
and (g)(2) of the proposed AD would require accomplishment of 
applicable actions in accordance with Boeing Special Attention Service 
Bulletin 747-52-2307, dated May 23, 2017; and Boeing Special Attention 
Service Bulletin 747-52-2308, dated June 5, 2017. Cathay noted that 
both service bulletins specify a compliance time of 35 months after the 
``original issue date of the service bulletin'' (e.g., May 23, 2017; 
and June 5, 2017, respectively). The commenter stated it had received 
information from Boeing that certain parts were not ready for delivery 
due to issues during validation of Boeing Special Attention Service 
Bulletin 747-52-2307, dated May 23, 2017. The commenter also stated 
that Boeing Special Attention Service Bulletin 747-52-2308, dated June 
5, 2017, has not been validated.
    Regarding Cathay's comment that certain compliance times are 
relative to the issue dates of Boeing Special Attention Service 
Bulletin 747-52-2307, dated May 23, 2017; and Boeing Special Attention 
Service Bulletin 747-52-2308, dated June 5, 2017, we agree to clarify 
the required compliance times. Paragraph (g) of this AD states ``Except 
as required by paragraph (h) of this AD,'' and paragraph (h) of this AD 
specifies that certain compliance times are relative to the ``effective 
date of this AD,'' rather than the ``original issue date of this 
service bulletin.'' Therefore, the compliance times in this AD are 
based on the effective date of this AD instead of the issue date of 
applicable service bulletins.
    The Boeing Company has completed the validation process for all 
applicable service information. Revised and validated service 
information for the Model 747 airplanes is now available. This AD 
references the revised service information as the appropriate source of 
service information for affected Boeing Model 747 series airplanes. In 
addition, Boeing has informed us that parts are currently available for 
compliance with this AD.
    We have changed paragraphs (c)(1) and (g)(1) of this AD to refer to 
Boeing Special Attention Service Bulletin 747-52-2307, Revision 1, 
dated May 2, 2018;

[[Page 49782]]

and paragraphs (c)(2) and (g)(2) of this AD to reference Boeing Special 
Attention Service Bulletin 747-52-2308, Revision 1, dated June 18, 
2018. We have also changed paragraph (h) of this AD to refer to Boeing 
Special Attention Service Bulletin 747-52-2307, Revision 1, dated May 
2, 2018; and Boeing Special Attention Service Bulletin 747-52-2308, 
Revision 1, dated June 18, 2018. We have also changed this AD to 
provide credit for certain actions done before the effective date of 
this AD using Boeing Special Attention Service Bulletin 747-52-2307, 
dated May 23, 2017, or Boeing Special Attention Service Bulletin 747-
52-2308, dated June 5, 2017, as applicable (reference paragraphs (i)(1) 
and (i)(2) of this AD).
    Since parts and revised service information are available, and 
since the compliance times are based on the effective date of this AD, 
rather than the service information, we have not changed the compliance 
times in this AD in this regard. However, under the provisions of 
paragraph (j) of this AD, we will consider requests for approval of 
alternative compliance times if sufficient data are submitted to 
substantiate that the change would provide an acceptable level of 
safety.

Request To Remove Replacement Requirement for Certain Airplanes

    Boeing requested we revise the language in paragraph (g)(4) of the 
proposed AD to remove the requirement to replace the nose cargo door 
control switch from the Model 757 airplane requirements because Model 
757 airplanes do not have a nose cargo door.
    We agree with the commenter's request for the reasons provided by 
the commenter. As stated previously, paragraph (g)(4) of the proposed 
AD is not retained in this AD. The actions for Model 757 airplanes, 
which are required by paragraph (g)(3) of this AD, are specified in 
Boeing Special Attention Service Bulletin 757-52-0093, Revision 2, 
dated November 14, 2017, which does not reference nose cargo door 
switches.

Conclusion

    We reviewed the relevant data, considered the comments received, 
and determined that air safety and the public interest require adopting 
this 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 
NPRM for addressing the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.
    We also determined that these changes will not increase the 
economic burden on any operator or increase the scope of this AD.

Related Service Information Under 1 CFR Part 51

    We reviewed the following Boeing service information.
     Boeing Special Attention Service Bulletin 747-52-2307, 
Revision 1, dated May 2, 2018; and Boeing Special Attention Service 
Bulletin 747-52-2308, Revision 1, dated June 18, 2018. The service 
information describes procedures for replacement of the nose, forward, 
and aft cargo door control switches with new, improved switches; 
installation of an arm switch in the forward and aft cargo doors; a 
nose cargo door normal operation test; forward and aft cargo door open 
and close functional tests; and applicable on-condition actions. These 
documents are distinct since they apply to different airplanes in 
different configurations.
     Boeing Special Attention Service Bulletin 757-52-0093, 
Revision 2, dated November 14, 2017. This service information describes 
procedures for replacement of the forward and aft cargo door control 
switches with new, improved switches; installation of an arm switch in 
the forward and aft cargo doors; an operational test of the No. 1 and 
No. 2 cargo doors; repetitive functional tests of the No. 1 and No. 2 
cargo doors; and applicable on-condition actions.
    This service information is reasonably available because the 
interested parties have access to it through their normal course of 
business or by the means identified in the ADDRESSES section.

Costs of Compliance

    We estimate that this AD affects 584 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
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Replacement (Boeing Special Attention   78 work-hours x $85 per           $12,874  $19,504..................  $273,056.
 Service Bulletin 747-52-2307) (14       hour = $6,630.
 airplanes).
Replacement (Boeing Special Attention   24 work-hours x $85 per               980  3,020....................  283,880.
 Service Bulletin 747-52-2308) (94       hour = $2,040.
 airplanes).
Replacement (Boeing Special Attention   51 work-hours x $85 per            10,626  14,961...................  7,121,436.
 Service Bulletin 757-52-0093) (476      hour = $4,335.
 airplanes).
Repetitive Test (Boeing Special         3 work-hours x $85 per                  0  255 per test cycle.......  121,380 per test cycle.
 Attention Service Bulletin 757-52-      hour = $255 per test
 0093) (476 airplanes).                  cycle.
--------------------------------------------------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some of the costs of this AD may be 
covered under warranty, thereby reducing the cost impact on affected 
individuals. We do not control warranty coverage for affected 
individuals. As a result, we have included all available costs in our 
cost estimate.

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.
    This AD is issued in accordance with authority delegated by the 
Executive Director, Aircraft Certification Service, as authorized by 
FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness

[[Page 49783]]

Division, but during this transition period, the Executive Director has 
delegated the authority to issue ADs applicable to transport category 
airplanes and associated appliances to the Director of the System 
Oversight Division.

Regulatory Findings

    We have determined that 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 removing Airworthiness Directive (AD) 
2013-01-02, Amendment 39-17316 (78 FR 4051, January 18, 2013), and 
adding the following new AD:

2018-19-23 The Boeing Company: Amendment 39-19424; Docket No. FAA-
2017-0905; Product Identifier 2017-NM-090-AD.

(a) Effective Date

    This AD is effective November 7, 2018.

(b) Affected ADs

    This AD replaces AD 2013-01-02, Amendment 39-17316 (78 FR 4051, 
January 18, 2013) (``AD 2013-01-02'').

(c) Applicability

    This AD applies to The Boeing Company airplanes; certificated in 
any category; as identified in paragraphs (c)(1), (c)(2), and (c)(3) 
of this AD.
    (1) Model 747-8F and 747-8 series airplanes as identified in 
Boeing Special Attention Service Bulletin 747-52-2307, Revision 1, 
dated May 2, 2018.
    (2) 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, as identified in Boeing Special Attention Service 
Bulletin 747-52-2308, Revision 1, dated June 18, 2018.
    (3) Model 757-200, 757-200PF, 757-200CB, and -300 series 
airplanes, as identified in Boeing Special Attention Service 
Bulletin 757-52-0093, Revision 2, dated November 14, 2017.

(d) Subject

    Air Transport Association (ATA) of America Code 52, Doors.

(e) Unsafe Condition

    This AD was prompted by reports of uncommanded cargo door 
operation. We are issuing this AD to prevent failures of the cargo 
door control switch from allowing uncommanded movement of the cargo 
door, which if not corrected, could lead to injuries to persons and 
damage to the airplane.

(f) Compliance

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

(g) Required Actions

    Except as required by paragraph (h) of this AD: Do the 
applicable actions specified in paragraphs (g)(1), (g)(2), and 
(g)(3) of this AD.
    (1) For airplanes identified in Boeing Special Attention Service 
Bulletin 747-52-2307, Revision 1, dated May 2, 2018: At the 
applicable time specified in paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 747-52-2307, Revision 1, 
dated May 2, 2018, do all applicable actions identified as ``RC'' 
(required for compliance) in, and in accordance with, the 
Accomplishment Instructions of Boeing Special Attention Service 
Bulletin 747-52-2307, Revision 1, dated May 2, 2018.
    (2) For airplanes identified in Boeing Special Attention Service 
Bulletin 747-52-2308, Revision 1, dated June 18, 2018: At the 
applicable time specified in paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 747-52-2308, Revision 1, 
dated June 18, 2018, do all applicable actions identified as RC in, 
and in accordance with the Accomplishment Instructions of Boeing 
Special Attention Service Bulletin 747-52-2308, Revision 1, dated 
June 18, 2018.
    (3) For airplanes identified in Boeing Special Attention Service 
Bulletin 757-52-0093, Revision 2, dated November 14, 2017: At the 
applicable times specified in paragraph 1.E., ``Compliance,'' of 
Boeing Special Attention Service Bulletin 757-52-0093, Revision 2, 
dated November 14, 2017, do all applicable actions identified as RC 
in, and in accordance with, the Accomplishment Instructions of 
Boeing Special Attention Service Bulletin 757-52-0093, Revision 2, 
dated November 14, 2017.

(h) Exception to Service Information

    Where Boeing Special Attention Service Bulletin 747-52-2307, 
Revision 1, dated May 2, 2018; Boeing Special Attention Service 
Bulletin 747-52-2308, Revision 1, dated June 18, 2018; and Boeing 
Special Attention Service Bulletin 757-52-0093, Revision 2, dated 
November 14, 2017; specify a compliance time after ``the original 
issue date of this service bulletin,'' this AD requires compliance 
within the specified compliance time after the effective date of 
this AD.

(i) Credit for Previous Actions

    (1) This paragraph provides credit for the actions specified in 
paragraph (g)(1) of this AD if those actions were performed before 
the effective date of this AD using Boeing Special Attention Service 
Bulletin 747-52-2307, dated May 23, 2017.
    (2) This paragraph provides credit for the actions specified in 
paragraph (g)(2) of this AD if those actions were performed before 
the effective date of this AD using Boeing Special Attention Service 
Bulletin 747-52-2308, dated June 5, 2017.
    (3) This paragraph provides credit for the actions specified in 
paragraph (g)(3) of this AD if those actions were performed before 
the effective date of this AD using Boeing Special Attention Service 
Bulletin 757-52-0093, dated May 5, 2016; or Boeing Special Attention 
Service Bulletin 757-52-0093, Revision 1, dated April 21, 2017.

(j) Alternative Methods of Compliance (AMOCs)

    (1) The Manager, Seattle ACO Branch, 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 certification office, send it to the attention of the 
person identified in paragraph (k) of this AD. Information may be 
emailed to: [email protected].
    (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, modification, or alteration 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 Branch, to make those findings. To be approved, 
the repair method, modification deviation, or alteration deviation 
must meet the certification basis of the airplane, and the approval 
must specifically refer to this AD.
    (4) For service information that contains steps that are labeled 
as RC, the provisions of paragraphs (j)(4)(i) and (j)(4)(ii) of this 
AD apply.
    (i) The steps labeled as RC, including substeps under an RC step 
and any figures identified in an RC step, must be done to

[[Page 49784]]

comply with the AD. If a step or substep is labeled ``RC Exempt,'' 
then the RC requirement is removed from that step or substep. An 
AMOC is required for any deviations to RC steps, including substeps 
and identified figures.
    (ii) Steps not labeled as RC may be deviated from using accepted 
methods in accordance with the operator's maintenance or inspection 
program without obtaining approval of an AMOC, provided the RC 
steps, including substeps and identified figures, can still be done 
as specified, and the airplane can be put back in an airworthy 
condition.

(k) Related Information

    For more information about this AD, contact Susan L. Monroe, 
Aerospace Engineer, Cabin Safety and Environmental Systems Section, 
FAA, Seattle ACO Branch, 2200 South 216th St., Des Moines, WA 98198; 
phone and fax: 206-231-3570; email: [email protected].

(l) 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 Special Attention Service Bulletin 747-52-2307, 
Revision 1, dated May 2, 2018.
    (ii) Boeing Special Attention Service Bulletin 747-52-2308, 
Revision 1, dated June 18, 2018.
    (iii) Boeing Special Attention Service Bulletin 757-52-0093, 
Revision 2, dated November 14, 2017.
    (3) For The Boeing Company service information identified in 
this AD, contact Boeing Commercial Airplanes, Attention: Contractual 
& Data Services (C&DS), 2600 Westminster Blvd., MC 110-SK57, Seal 
Beach, CA 90740-5600; telephone 562-797-1717; internet https://www.myboeingfleet.com.
    (4) You may view this service information at the FAA, Transport 
Standards Branch, 2200 South 216th St., Des Moines, WA. For 
information on the availability of this material at the FAA, call 
206-231-3195.
    (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: http://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued in Des Moines, Washington, on September 14, 2018.
John P. Piccola,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-21346 Filed 10-2-18; 8:45 am]
 BILLING CODE 4910-13-P