81 FR 21762 - Airworthiness Directives; The Boeing Company Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 81, Issue 71 (April 13, 2016)

We are revising an earlier proposed airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, and -400ER series airplanes. The NPRM proposed an inspection for plastic couplings, corrective actions if necessary, and installation of new spray shrouds. The NPRM was prompted by a report of the engine indication and crew alerting system (EICAS) display system malfunctioning during flight. This action revises the NPRM by adding, for certain airplanes, a general visual inspection of the spray shield and related investigative and corrective actions if necessary. We are proposing this supplemental NPRM (SNPRM) to prevent an uncontrolled water leak from a defective potable water system coupling, which could cause the main equipment center (MEC) line replaceable units (LRUs) to become wet, resulting in an electrical short and potential loss of several functions essential for safe flight. Since these actions impose an additional burden over that proposed in the NPRM, we are reopening the comment period to allow the public the chance to comment on these proposed changes.

[Federal Register Volume 81, Number 71 (Wednesday, April 13, 2016)]
[Proposed Rules]
[Pages 21762-21766]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2016-08365]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2014-0571; Directorate Identifier 2014-NM-059-AD]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company 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 The Boeing Company Model 767-200, -300, and -400ER 
series airplanes. The NPRM proposed an inspection for plastic 
couplings, corrective actions if necessary, and installation of new 
spray shrouds. The NPRM was prompted by a report of the engine 
indication and crew alerting system (EICAS) display system 
malfunctioning during flight. This action revises the NPRM by adding, 
for certain airplanes, a general visual inspection of the spray shield 
and related investigative and corrective actions if necessary. We are 
proposing this supplemental NPRM (SNPRM) to prevent an uncontrolled 
water leak from a defective potable water system coupling, which could 
cause the main equipment center (MEC) line replaceable units (LRUs) to 
become wet, resulting in an electrical short and potential loss of 
several functions essential for safe flight. Since these actions impose 
an additional burden over that proposed in the NPRM, we are reopening 
the comment period to allow the public the chance to comment on these 
proposed changes.

DATES: We must receive comments on this SNPRM by May 31, 2016.

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: 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 NPRM, 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 view this 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. It 
is also available on the internet at http://www.regulations.gov by 
searching for and locating Docket No. FAA-2014-0571.

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-2014-
0571; 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: Stanley Chen, Aerospace Engineer, 
Cabin Safety and Environmental Systems Branch, ANM-150S, FAA, Seattle 
Aircraft Certification Office (ACO), 1601 Lind Avenue SW., Renton, WA 
98057-3356; phone: 425-917-6585; fax: 425-917-6590; email: 
[email protected].

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-2014-0571; 
Directorate Identifier 2014-NM-059-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 an NPRM to amend 14 CFR part 39 by adding an AD that 
would apply to certain The Boeing Company Model 767-200, -300, and -
400ER series airplanes. The NPRM published in the Federal Register on 
August 14, 2014 (79 FR 47597) (``the NPRM''). The NPRM proposed to 
require an inspection for plastic couplings, corrective actions if 
necessary, and installation of new spray shrouds.

Actions Since Previous NPRM Was Issued

    Since we issued the NPRM, Boeing has issued Boeing Alert Service 
Bulletin 767-38A0073, Revision 2, dated August 10, 2015. Boeing Alert 
Service Bulletin 767-38A0073, Revision 2, dated August 10, 2015, adds, 
for certain airplanes, a general visual inspection of the spray shield 
to determine if it has two slits and is installed correctly, and 
related investigative and corrective actions if

[[Page 21763]]

necessary. We added a new paragraph (h) to require this inspection and, 
if necessary, related investigative and corrective actions as 
applicable. We redesignated subsequent paragraphs accordingly.

Comments

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

Effect of Winglets on Accomplishment of the Proposed Actions

    Aviation Partners Boeing (APB) stated that the installation of 
winglets per supplemental type certificate ST01920SE (http://
rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/
59027f43b9a7486e86257b1d006591ee/$FILE/ST01920SE.pdf) does not affect 
the accomplishment of the manufacturer's service instructions. APB also 
expressed that it would provide supporting data to the FAA upon 
request.
    We agree with the commenter that STC ST01920SE (http://rgl.faa.gov/
Regulatory_and_Guidance_Library/rgstc.nsf/0/
59027f43b9a7486e86257b1d006591ee/$FILE/ST01920SE.pdf) does not affect 
the accomplishment of the manufacturer's service instructions. 
Therefore, the installation of STC ST01920SE does not affect the 
ability to accomplish the actions required by this proposed AD. We have 
not changed this proposed AD in this regard.

Request To Include Latest Service Information

    Boeing requested that we revise the NPRM to refer to Boeing Service 
Bulletin 767-38A0073, Revision 1, dated November 5, 2014, and to note 
that no more work is necessary on any airplanes on which the actions 
specified in Boeing Alert Service Bulletin 767-38A0073, dated November 
12, 2013, have been done (the NPRM referred to Boeing Alert Service 
Bulletin 767-38A0073, dated November 12, 2013, as the appropriate 
source of service information). Boeing also stated that the revision 
includes some minor changes in the Work Instructions and corrects some 
part numbers in the Material Information section. Boeing noted that the 
revised service information includes the statement ``no more work is 
necessary on any airplane(s) changed in accordance with the original 
issue of the service bulletin.''
    We agree to include the latest revision of the service information 
in this proposed AD. As stated previously, Boeing Alert Service 
Bulletin 767-38A0073, Revision 2, dated August 10, 2015, has been 
issued. This proposed AD would require that all actions be completed 
using Boeing Alert Service Bulletin 767-38A0073, Revision 2, dated 
August 10, 2015. We have also added a new paragraph (k) to this 
proposed AD to give credit for actions done before a certain date using 
Boeing Alert Service Bulletin 767- 38A0073, dated November 12, 2013, 
and Boeing Service Bulletin 767-38A0073, Revision 1, dated November 5, 
2014. We have redesignated subsequent paragraphs accordingly.

Request To Revise the Inspection and Installation Paragraph (Paragraph 
(g) of the NPRM)

    Boeing requested that we revise the ``Inspection and Installation'' 
paragraph (paragraph (g) of the proposed AD (in the NPRM)) to delete 
the following sentence:

    Do all applicable corrective actions within the compliance time 
identified in paragraph 1.E., ``Compliance,'' of Boeing Alert 
Service Bulletin 767-38A0073, dated November 12, 2013, except as 
required by paragraph (h) of this AD.''

Boeing claimed that the sentence is repetitive and that it adds no new 
information beyond what is captured in the first two sentences of 
paragraph (g) of the proposed AD (in the NPRM).
    We do not agree to revise this proposed AD to delete the sentence 
as requested because the sentence is necessary to indicate the 
compliance time for the corrective actions. We have made no changes to 
this proposed AD in this regard.

Request To Revise Costs of Compliance Section by Adding Leak Test Costs

    Boeing requested that we revise the Costs of Compliance section of 
the NPRM to account for the hours to perform the leak test on each 
airplane. Boeing explained that Boeing Alert Service Bulletin 767-
38A0073, dated November 12, 2013, contains estimates of 3 work-hours 
for the leak test. Boeing reasoned that the hours to perform the leak 
test following any coupling replacement were not included in the cost 
estimate.
    We agree to revise the Costs of Compliance section of this SNPRM to 
add the costs to perform a leak test, for the reason indicated by 
Boeing. We have included this cost in the ``Related investigative 
actions'' row of the on-condition costs.

Request To Revise Parts Installation Prohibition Paragraph

    United Airlines (UA) requested that we revise the ``Parts 
Installation Prohibition'' paragraph (paragraph (i) of the proposed AD 
(in the NPRM)) to refer to part number (P/N) ``CA620 series'' or P/N 
``CA625 series,'' instead of simply ``P/N CA620'' or ``P/N CA625.'' UA 
explained that calling out P/N CA620 or P/N CA625 comprises only a 
portion of the part number.
    We agree to revise the ``Parts Installation Prohibition'' paragraph 
(paragraph (j) of this proposed AD, which was referred to as paragraph 
(i) of the proposed AD (in the NPRM)) to specify P/N ``CA620 series'' 
or P/N ``CA625 series,'' for the reason explained by UA. A complete 
part number is formatted to provide information; e.g., for ``CA620XX-
YYZZ,'' XX identifies the size, YY identifies the material, and ZZ is a 
color code; this proposed AD would prohibit P/N CA620 and P/N CA625 
regardless of size, material, and color.

Request To Allow Use of Airplane Maintenance Manual (AMM)

    UA explained that Boeing Alert Service Bulletin 767-38A0073, dated 
November 12, 2013, refers to Subject 38-10-00, Potable Water System, of 
Chapter 38, Water/Waste, of the Boeing 767 AMM as an accepted procedure 
to do a potable water system leak test on any replaced coupling and 
repair any leak. UA stated that the leak test on ``any replaced 
coupling'' in the potable water supply lines is only a portion of the 
referenced procedure, yet Subject 38-10-00, Potable Water System, of 
Chapter 38, Water/Waste, of the Boeing 767 AMM encompasses the water 
system as a whole. Steps (a) through (c) of paragraph G.9 in AMM 38-10-
10 apply to the fill, drain, and overflow port, whereas step (d) 
applies to the water lines that supply lavatory and galley water. UA 
interpreted this requirement as referencing the steps in the Subject 
38-10-00, Potable Water System, of Chapter 38, Water/Waste, of the 
Boeing 767 AMM that apply to any replaced coupling for compliance 
purposes.
    We agree to clarify. Only the steps in the AMM for a leak test that 
apply to any replaced coupling must be done for compliance purposes. We 
have made no changes to this proposed AD in this regard.

Request To Include an Alternative Leak Test or Protection

    UA requested that we revise paragraph (g) of the proposed AD (in 
the NPRM) to add an alternative leak test, or protection of the 
electronics during the leak test. UA stated that Boeing Alert Service 
Bulletin 767-38A0073, dated November 12, 2013, specifies a

[[Page 21764]]

potable water supply line leak test in the electronic/equipment (EE) 
bay after repairs, which may produce leaks into the EE. UA advised 
providing protection from water spray in the event of a leak, since the 
shrouds may not have been installed at this point. When a sleeve is 
installed over the O-rings, sometimes the sleeve tends to ``walk'' or 
jam unevenly over the O-rings, causing an unexpected leak.
    We disagree with the commenters request to add an alternative leak 
test, or to require protection of the electronics during the leak test. 
However, we agree that operators can take optional protective measures 
to cover or shield their equipment against water spray during the leak 
test. We have added note 1 to paragraph (g) of this proposed AD for 
clarification. We have determined that an alternative leak test is not 
necessary, and no requirement for electronics protection is needed. If 
present after the couplings have been swapped, the leak should be 
detected soon after the leak test is initiated, so the potential amount 
of water leaked would be minimal. If the sleeve was not properly 
installed, it should be obvious because the coupling could not be fully 
closed without the secondary retention strap secured. If damage to the 
O-ring occurred when the sleeve was installed, the leakage would be 
minimal. The electronics are contained inside panels and racks, and 
minimal water leakage should not be a problem. Only an undetected leak 
for extended duration, or major leaks spraying water all over, would be 
problematic since the racks/panels are not waterproof.

FAA's Determination

    We are proposing this SNPRM 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. Certain changes described above expand the scope of the 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 SNPRM.

Proposed Requirements of This SNPRM

    This SNPRM would require accomplishing the actions specified in the 
service information described previously. For information on the 
procedures and compliance times, see this service information at http://www.regulations.gov by searching for and locating Docket No. FAA-2014-
0571.
    The phrase ``related investigative actions'' is used in this 
proposed AD. ``Related investigative actions'' are follow-on actions 
that (1) are related to the primary action, and (2) further investigate 
the nature of any condition found. Related investigative actions in an 
AD could include, for example, inspections.
    The phrase ``corrective actions'' is 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.

Related Service Information Under 1 CFR Part 51

    We reviewed Boeing Alert Service Bulletin 767-38A0073, Revision 2, 
dated August 10, 2015. The service information describes procedures for 
a general visual inspection for plastic potable water couplings and 
applicable related investigative and corrective actions; installation 
of new spray shrouds; and a general visual inspection of the spray 
shield to determine if it has two slits, and is installed correctly, 
and applicable related investigative and corrective 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 proposed AD affects 136 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
             Action                  Labor cost        Parts cost     Cost per product    Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Part 1--General visual           Up to 3 work-hours              $0  Up to $255........  Up to $34,680.
 inspection (Groups 1 through     x $85 per hour =
 3, 9, and 11, Configuration 1;   $255.
 Groups 4-8, 10, and 12-13)
 (136 airplanes).
Part 2--General visual           2 work-hours x $85               0  $170..............  $5,440.
 inspection (Group 9,             per hour = $170.
 Configuration 1, and Group 10)
 (32 airplanes).
Part 3--Install spray shrouds..  3 work-hours x $85             330  $585..............  $79,560.
                                  per hour = $255.
Part 4--General visual           2 work-hours x $85               0  $170..............  $5,100.
 inspection (Groups 1 through     per hour = $170.
 3, 9, and 11, Configuration 2)
 (30 airplanes).
----------------------------------------------------------------------------------------------------------------

    We estimate the following costs to do any necessary on-condition 
actions 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 actions:

                                               On-Condition Costs
----------------------------------------------------------------------------------------------------------------
                 Action                          Labor cost            Parts cost         Cost per  product
----------------------------------------------------------------------------------------------------------------
Related investigative actions..........  3 work-hours x $85 per                  $0  $255.
                                          hour = $255.
Corrective actions.....................  Up to 1 work-hour x $85                 53  Up to $138.
                                          per hour = $85.
----------------------------------------------------------------------------------------------------------------

    According to the manufacturer, some of the costs of this proposed 
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 costs in our cost 
estimate.

[[Page 21765]]

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
    (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-2014-0571; Directorate Identifier 
2014-NM-059-AD.

(a) Comments Due Date

    We must receive comments by May 31, 2016.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to The Boeing Company Model 767-200, -300, and -
400ER series airplanes, certificated in any category, as identified 
in Boeing Alert Service Bulletin 767-38A0073, Revision 2, dated 
August 10, 2015.

(d) Subject

    Air Transport Association (ATA) of America Code 38, Water/Waste.

(e) Unsafe Condition

    This AD was prompted by a report of the engine indication and 
crew alerting system (EICAS) display system malfunctioning during 
flight. We are issuing this AD to prevent an uncontrolled water leak 
from a defective potable water system coupling, which could cause 
the main equipment center (MEC) line replaceable units (LRUs) to 
become wet, resulting in an electrical short and potential loss of 
several functions essential for safe flight.

(f) Compliance

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

(g) Inspection of Couplings and Installation of Spray Shrouds

    For Groups 1 through 3, Configuration 1 airplanes; Groups 4 
through 8 airplanes; Group 9, Configuration 1 airplanes; Group 10 
airplanes; Group 11, Configuration 1 airplanes; and Groups 12 and 13 
airplanes; as identified in Boeing Alert Service Bulletin 767-
38A0073, Revision 2, dated August 10, 2015: At the applicable times 
identified in paragraph 1.E., ``Compliance,'' of Boeing Alert 
Service Bulletin 767-38A0073, Revision 2, dated August 10, 2015, 
except as required by paragraph (i) of this AD, do a general visual 
inspection for plastic potable water couplings, do all applicable 
related investigative and corrective actions, and install new spray 
shrouds (including a new hose assembly, as applicable), in 
accordance with the Accomplishment Instructions of Boeing Alert 
Service Bulletin 767-38A0073, Revision 2, dated August 10, 2015. Do 
all applicable related investigative and corrective actions within 
the applicable compliance time identified in paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 767-38A0073, 
Revision 2, dated August 10, 2015, except as required by paragraph 
(i) of this AD.

    Note 1 to paragraph (g) of this AD:  Operators can take optional 
protective measures to cover or shield their equipment against water 
spray when performing the Potable Water System Leakage Test, as 
specified in Boeing Alert Service Bulletin 767-38A0073, Revision 2, 
dated August 10, 2015.

(h) Inspection of Spray Shield and Corrective Actions

    For Groups 1 through 3, 9, and 11, Configuration 2 airplanes; as 
identified in Boeing Alert Service Bulletin 767-38A0073, Revision 2, 
dated August 10, 2015: Within 72 months after the effective date of 
this AD, do a general visual inspection of the spray shield to 
determine if it has two slits and is installed correctly, and do all 
applicable related investigative and corrective actions, in 
accordance with the Accomplishment Instructions of Boeing Alert 
Service Bulletin 767-38A0073, Revision 2, dated August 10, 2015. Do 
all applicable related investigative and corrective actions before 
further flight.

(i) Exception to the Service Information

    Where paragraph 1.E., ``Compliance,'' of Boeing Alert Service 
Bulletin 767-38A0073, Revision 2, dated August 10, 2015, specifies 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.

(j) Parts Installation Prohibition

    As of the effective date of this AD, no person may install any 
plastic potable water coupling having part number (P/N) CA620 series 
or P/N CA625 series on any airplane.

(k) Credit for Previous Actions

    For Groups 4 through 8, 10, 12, and 13 airplanes, as identified 
in Boeing Alert Service Bulletin 767-38A0073, Revision 2, dated 
August 10, 2015: This paragraph provides credit for the actions 
specified in paragraph (g) of this AD, if those actions were 
performed before the effective date of this AD using Boeing Alert 
Service Bulletin 767-38A0073, dated November 12, 2013; or Boeing 
Service Bulletin 767-38A0073, Revision 1, dated November 5, 2014; 
which are not incorporated by reference in this AD.

(l) 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 paragraph (m)(1) 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,

[[Page 21766]]

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, 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 Required for Compliance (RC), the provisions of paragraphs 
(l)(4)(i) and (l)(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 comply 
with the AD. 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.

(m) Related Information

    (1) For more information about this AD, contact Stanley Chen, 
Aerospace Engineer, Cabin Safety and Environmental Systems Branch, 
ANM-150S, FAA, Seattle Aircraft Certification Office (ACO), 1601 
Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-6585; fax: 
425-917-6590; email: [email protected].
    (2) For service information identified in this AD, 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 view this 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 30, 2016.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-08365 Filed 4-12-16; 8:45 am]
 BILLING CODE 4910-13-P