
[Federal Register Volume 81, Number 117 (Friday, June 17, 2016)]
[Rules and Regulations]
[Pages 39547-39553]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-13051]


-----------------------------------------------------------------------

DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2011-0027; Directorate Identifier 2010-NM-127-AD; 
Amendment 39-18543; AD 2016-11-16]
RIN 2120-AA64


Airworthiness Directives; The Boeing Company Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

-----------------------------------------------------------------------

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
The Boeing Company Model 777-200 and -300 series airplanes equipped 
with Rolls-Royce Model RB211-Trent 800 engines. This AD was prompted by 
reports of thrust reverser (T/R) events related to thermal damage of 
the T/R inner wall. Depending on the airplane configuration, this AD 
requires a records review and applicable repetitive inspections, 
replacements, and installations of the T/R inner wall; and related 
investigative and corrective actions if necessary. This AD also 
requires installation of serviceable T/R halves, which would terminate 
the repetitive actions. This AD also requires revising the inspection 
or maintenance program by incorporating new airworthiness limitations. 
We are issuing this AD to detect and correct a degraded T/R inner wall 
panel. A degraded T/R inner wall panel could lead to failure of the T/R 
and adjacent components and their consequent separation from the 
airplane, which could result in a rejected takeoff (RTO) and cause 
asymmetric thrust and consequent loss of control of the airplane during 
reverse thrust operation. If a T/R inner wall overheats, separated 
components could cause structural damage to the airplane, damage to 
other airplanes, or possible injury to people on the ground.

DATES: This AD is effective July 22, 2016.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of July 22, 
2016.

ADDRESSES: For service information identified in this final rule, 
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-2011-
0027.

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-2011-
0027; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this AD, the regulatory evaluation, any comments received, and 
other information. The address for the Docket Office (phone: 800-647-
5527) is Docket Management Facility, U.S. Department of Transportation, 
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 
New Jersey Avenue SE., Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Kevin Nguyen, Aerospace Engineer, 
Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office 
(ACO), 1601 Lind Avenue SW., Renton, WA 98057-3356; phone: 425-917-
6501; fax: 425-917-6590; email: kevin.nguyen@faa.gov.

SUPPLEMENTARY INFORMATION:

Discussion

    We issued a supplemental notice of proposed rulemaking (SNPRM) to 
amend 14 CFR part 39 by adding an AD that would apply to certain The 
Boeing Company Model 777-200 and -300 series airplanes equipped with 
Rolls-Royce Model RB211-Trent 800 engines. The SNPRM published in the 
Federal Register on September 25, 2015 (80 FR 57744) (``the SNPRM''). 
We preceded the SNPRM with a notice of proposed rulemaking (NPRM) that 
published in the Federal Register on January 20, 2011 (76 FR 3561) 
(``the NPRM''). The NPRM proposed to require repetitive inspections for 
degradation of T/R structure and sealant, and related investigative and 
corrective actions if

[[Page 39548]]

necessary. The NPRM was prompted by reports of T/R events related to 
thermal damage of the T/R inner wall. The SNPRM proposed to revise the 
NPRM by adding different repetitive inspection requirements for T/R 
halves with a thermal protective system installed. The SNPRM also 
proposed to revise the NPRM by requiring installation of serviceable T/
R halves, which would terminate the repetitive inspections. The SNPRM 
also proposed to revise the inspection or maintenance program by 
incorporating new airworthiness limitations. We are issuing this AD to 
detect and correct a degraded T/R inner wall panel. A degraded T/R 
inner wall panel could lead to failure of the T/R and adjacent 
components and their consequent separation from the airplane, which 
could result in an RTO and cause asymmetric thrust and consequent loss 
of control of the airplane during reverse thrust operation. If a T/R 
inner wall overheats, separated components could cause structural 
damage to the airplane, damage to other airplanes, or possible injury 
to people on the ground.

Comments

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

Request To Change Compliance Reference

    Boeing requested that we revise paragraph (k)(2) of the proposed AD 
(in the SNPRM) by adding ``table 5'' to the reference to the Compliance 
paragraph in Boeing Service Bulletin 777-78-0082, Revision 1, dated 
June 15, 2015. Boeing stated that this change would be consistent with 
how paragraph (k)(1) of the proposed AD (in the SNPRM) refers to the 
Compliance paragraph.
    We agree with the commenter's request for the reason provided. We 
have revised paragraph (k)(2) of this AD accordingly.

Request To Modify Alternative Method of Compliance (AMOC) Statement

    Boeing requested that the AMOC statement specified in paragraph 
(r)(3) of the proposed AD (in the SNPRM) be revised by adding a 
sentence to allow an AMOC for the serviceable T/R assembly to be 
transferred to other airplanes. Boeing stated that an AMOC provided for 
a repaired and serviceable unit is able to be attached to and travel 
with the repaired unit. Boeing added that a serviceable unit is a 
rotable part and can be installed on multiple airplanes during the life 
of the unit. Boeing noted that paragraph (l)(3) of AD 2015-19-16, 
Amendment 39-18278 (80 FR 59570, October 2, 2015) contains language 
similar to the requested language.
    We disagree with the request because we are now able to issue an 
AMOC that applies to multiple products operated by a single operator 
(commonly referred to as a fleet AMOC). This procedure allows AMOCs to 
address rotable parts. We have not changed this AD in this regard.

Request To Update Service Information

    Boeing requested that the revision date of Boeing 777 Maintenance 
Planning Data (MPD) Document Section 9, Airworthiness Limitations 
(AWLs) and Certification Maintenance Requirements (CMRs), D622W001-9, 
Revision dated October 2014, be updated to reflect the latest FAA-
approved revision. Boeing stated that AWL 78-AWL-01, Thrust Reverser 
Thermal Protection System, was revised recently to include Boeing Alert 
Service Bulletin 777-78A0094, dated July 29, 2014, in the applicability 
note of the AWL.
    We agree to reference the most recent revision of Boeing 777 MPD 
Document Section 9, AWLs and CMRs, D622W001-9 (which is referred to as 
Temporary Revision (TR) 09-030, Revision dated November 2015, on 
MyBoeingFleet.com), because the new applicability note clarifies that 
AWL 78-AWL-01 applies to T/R halves on which the actions specified in 
Boeing Alert Service Bulletin 777-78A0094 have been done. As a result, 
we have revised the introductory text to paragraph (n) of this AD 
accordingly. We have also added a new paragraph (p)(5) to this AD to 
provide credit for accomplishing the revision required by paragraph (n) 
of this AD using Boeing 777 MPD Document, Section 9, AWLs and CMRs, 
D622W001-9, Revision dated October 2014.

Request To Modify Initial Inspection

    Boeing requested that paragraph (n)(1) of the proposed AD (in the 
SNPRM) be revised to allow deferral of the initial inspection for AWL 
78-AWL-01, Thrust Reverser Thermal Protection System. Boeing stated 
that the compliance time should be 1,125 days or 6,000 flight cycles, 
whichever occurs first, after the last inspection for AWL 78-AWL-01, 
Thrust Reverser Thermal Protection System, ``for T/Rs that have already 
incorporated 78-AWL-01.'' Boeing stated that when the AD becomes 
effective, T/R halves on which Boeing Alert Service Bulletin 777-
78A0094 and AWL 78-AWL-01, Thrust Reverser Thermal Protection System, 
have been incorporated are not subject to the inspections specified in 
paragraph (i) of the proposed AD (in the SNPRM) and should not be 
required to do the inspection required by AWL 78-AWL-01 concurrent with 
the next inspection required by paragraph (i) of this AD or within 30 
days after the effective date of this AD, whichever occurs later.
    We agree with allowing deferral of the initial inspection for AWL 
78-AWL-01, Thrust Reverser Thermal Protection System, for the reasons 
provided by the commenter. We have revised the compliance time for AWL 
78-AWL-01, Thrust Reverser Thermal Protection System, as requested by 
the commenter. We have revised the introductory text to paragraph (n), 
and reformatted and revised paragraphs (n)(1) and (n)(2) of this AD, to 
accommodate the commenter's request. We clarified the affected 
airplanes for the compliance as specified in paragraph (n)(1) of this 
AD by stating, ``For airplanes on which any inspections required by 
paragraph (i) of this AD are done.'' We clarified the affected 
airplanes for the compliance as specified in paragraph (n)(2) of this 
AD by stating, ``For airplanes on which the installation required by 
paragraph (l) of this AD is done.''

Request To Review Inspection Methods

    American Airlines requested that the FAA review the inspection 
methods and instructions required in paragraph (i) of the proposed AD 
(in the SNPRM) when doing a nondestructive test (NDT) inspection for 
delaminations and disbonds; and ensuring false positive findings are 
prevented or minimized. American Airlines stated that they inspected 
eight T/R inner walls in accordance with paragraph (i)(1) of the 
proposed AD (in the SNPRM) and found disbonded material. American 
Airlines stated that after they contacted the original equipment 
manufacturer (OEM) and re-inspected, several units were determined to 
be false positives. American Airlines surmised that the instructions or 
possible training for inspections may not be sufficient.
    We acknowledge the commenter's concern. However, we have determined 
the NDT inspections for disbonds and damage required in paragraph (i) 
and associated service information produce reliable inspection results 
and adequately detect disbonds and damage. Through technical discussion 
with the OEM, we understand that the false positive indications were a 
result of a maintenance vendor using a non-OEM inspection manual that 
had a faulty NDT inspection standard. We have not revised this AD in 
this regard.

[[Page 39549]]

Request To Review Airworthiness Limitation Inspection Procedures

    American Airlines stated it had a T/R inner wall that required 
repair, but the damage would not have been detected by the inspection 
specified in Airworthiness Limitation 78-AWL-02, Thrust Reverser Inner 
Wall, as specified in Boeing MPD Document, Section 9, AWLs and CMRs, 
D622W001-9, Revision dated October 2014. American Airlines stated the 
damage would likely have passed inspection because it did not indicate 
any heat discoloration, and other areas of disbonds or damage on the 
inner wall could be potentially missed after the incorporation of 
Boeing Alert Service Bulletin 777-78A0094, dated July 29, 2014, and AWL 
78-AWL-02. We infer the commenter is requesting that we review AWL 78-
AWL-02 to ensure that thermal damage on the inner wall is not missed.
    We acknowledge the commenter's concern, and we might consider 
additional rulemaking to address that concern in the future. We 
contacted Boeing, and Boeing stated they are working with American 
Airlines to determine if a change needs to be made to the service 
information. However, until such additional action is identified, we 
consider it appropriate to proceed with issuance of this final rule to 
address the identified unsafe condition. We have not changed this final 
rule in this regard.

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 
SNPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the SNPRM.
    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 Alert Service Bulletin 777-78A0065, Revision 2, 
dated May 6, 2010. This service information describes procedures for a 
review of the airplane maintenance records to determine whether sealant 
was added to insulation blankets around compression pad fittings and 
the powered door opening system (PDOS) fitting; inspections of the T/R 
structure; and related investigative and corrective actions.
     Boeing Alert Service Bulletin 777-78A0094, dated July 29, 
2014. This service information describes procedures for installing 
serviceable T/R halves.
     Boeing Service Bulletin 777-78-0082, Revision 1, dated 
June 15, 2015; and Boeing Special Attention Service Bulletin 777-78-
0071, Revision 2, dated July 23, 2013. This service information 
describes, among other actions, procedures for inspections of the T/R 
structure, and related investigative and corrective actions, if 
necessary. Boeing Special Attention Service Bulletin 777-78-0071, 
Revision 2, dated July 23, 2013, also describes, for airplanes on which 
the actions specified in Boeing Special Attention Service Bulletin 777-
78-0071, dated November 29, 2009, have been done, procedures for 
installation of click bond covers and a bracket, a general visual 
inspection of the compression fitting for incorrect pin orientation, 
and related investigative and corrective actions, if necessary.
     Boeing 777 Maintenance Planning Data (MPD) Document, 
Section 9, Airworthiness Limitations (AWLs) and Certification 
Maintenance Requirements (CMRs), D622W001 9, Revision dated November 
2015. This service information provides required AWLs and CMRs for The 
Boeing Company Model 777 airplanes. The two AWLs specifically required 
by this AD are AWL 78-AWL-01, Thrust Reverser Thermal Protection 
System, which describes an inspection of the T/R thermal protection 
system on both engines; and AWL 78 AWL-02, which describes an 
inspection of the T/R inner wall.
    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 55 airplanes of U.S. registry.
    We estimate the following costs to comply with this AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                Average labor                       Cost per
           Action                Work hours     rate per hour     Parts cost        product         Fleet cost
----------------------------------------------------------------------------------------------------------------
Actions per Boeing Alert      Up to 79 work-              $85  $0.............  Up to $6,715     $0 (No
 Service Bulletin              hours, per T/R                                    per T/R half.    airplanes on
 777[dash]78A0065, Revision    half.                                                              the U.S.
 2, dated May 6, 2010.                                                                            Register are
                                                                                                  in the
                                                                                                  configuration
                                                                                                  specified in
                                                                                                  Boeing Alert
                                                                                                  Service
                                                                                                  Bulletin
                                                                                                  777[dash]78A00
                                                                                                  65, Revision
                                                                                                  2, dated May
                                                                                                  6, 2010.)
Actions per Boeing Special    Up to 48 work-               85  $0.............  Up to $4,080     Up to $897,600
 Attention Service Bulletin    hours, per T/R                                    per T/R half.    (4 T/R halves
 777[dash]78[dash]0071,        half.                                                              per airplane).
 Revision 2, dated July 23,
 2013.
Inspections per Boeing        Up to 39 work-               85  $0.............  Up to $3,315     $0 (No
 Service Bulletin              hours, per T/R                                    per T/R half.    airplanes on
 777[dash]78[dash]0082,        half.                                                              the U.S.
 Revision 1, dated June 15,                                                                       Register are
 2015.                                                                                            in the
                                                                                                  configuration
                                                                                                  specified in
                                                                                                  Boeing Service
                                                                                                  Bulletin
                                                                                                  777[dash]78[da
                                                                                                  sh]0082,
                                                                                                  Revision 1,
                                                                                                  dated June 15,
                                                                                                  2015.)
Maintenance or Inspection     1 work-hour....              85  $0.............  $85............  $4,675.
 Program Revision.

[[Page 39550]]

 
T/R half installation per     Up to 206 work-              85  Up to $400,651   Up to $418,161   Up to
 Boeing Alert Service          hours, per T/R                   per T/R half     per T/R half.    $91,995,420 (4
 Bulletin 777[dash]78A0094,    half.                            \1\.                              T/R halves per
 dated July 29, 2014.                                                                             airplane).\2\
----------------------------------------------------------------------------------------------------------------
\1\ The cost of parts is split into two major parts: (1) Thermal protection system (TPS) blankets and (2) inner
  wall structure. The vast majority of the work associated with the TPS upgrade has already been completed. In
  addition, nearly half of the inner wall structure modification has already been done.
\2\ The fleet cost estimate above is based on a general estimate for a given airplane with two engines having
  two T/R halves for each engine. Not all tasks required by this AD and specified in the service information
  would need to be done for a given T/R half. For a given TR half, it may only be necessary to accomplish
  certain actions or none for compliance, depending on its configuration status. We have no data to determine
  any given T/R half configuration to determine the cost for each T/R half to do the applicable actions for that
  T/R half. The majority of this cost has already been incurred.

    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this AD.
    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 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.

Regulatory Findings

    This AD will not have federalism implications under Executive Order 
13132. This AD will not have a substantial direct effect on the States, 
on the relationship between the national government and the States, or 
on the distribution of power and responsibilities among the various 
levels of government.
    For the reasons discussed above, I certify that this AD:
    (1) Is not a ``significant regulatory action'' under Executive 
Order 12866,
    (2) Is not a ``significant rule'' under DOT Regulatory Policies and 
Procedures (44 FR 11034, February 26, 1979),
    (3) Will not affect intrastate aviation in Alaska, and
    (4) Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority: 49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by adding the following new airworthiness 
directive (AD):

2016-11-16 The Boeing Company: Amendment 39-18543; Docket No. FAA-
2011-0027; Directorate Identifier 2010-NM-127-AD.

(a) Effective Date

    This AD is effective July 22, 2016.

(b) Affected ADs

    This AD affects AD 2005-07-24, Amendment 39-14049 (70 FR 18285, 
April 11, 2005).

(c) Applicability

    This AD applies to The Boeing Company Model 777-200 and -300 
series airplanes, certificated in any category, equipped with Rolls-
Royce Model RB211-Trent 800 engines.

(d) Subject

    Air Transport Association (ATA) of America Code 78, Engine 
exhaust.

(e) Unsafe Condition

    This AD was prompted by reports of thrust reverser (T/R) events 
related to thermal damage of the T/R inner wall. We are issuing this 
AD to detect and correct a degraded T/R inner wall panel. A degraded 
T/R inner wall panel could lead to failure of the T/R and adjacent 
components and their consequent separation from the airplane, which 
could result in a rejected takeoff (RTO) and cause asymmetric thrust 
and consequent loss of control of the airplane during reverse thrust 
operation. If a T/R inner wall overheats, separated components could 
cause structural damage to the airplane, damage to other airplanes, 
or possible injury to people on the ground.

(f) Compliance

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

(g) Records Review, Inspections, and Related Investigative and 
Corrective Actions for Airplanes With Pre-Thermal Protection System 
(TPS) Insulation Blankets (Part Numbers (P/Ns) 315W5113-(XX) and 
315W5010-(XX)) Installed

    For airplanes with pre-TPS insulation blankets, P/Ns 315W5113-
(XX) and 315W5010-(XX): Except as required by paragraphs (h)(1), 
(h)(2), (h)(3), and (h)(4) of this AD, at the applicable time in 
paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 
777-78A0065, Revision 2, dated May 6, 2010, review the airplane 
maintenance records to determine whether sealant was added to 
insulation blankets around the compression pad fittings and the 
powered door opening system (PDOS) fitting; do the applicable 
actions specified in paragraphs (g)(1), (g)(2), (g)(3), (g)(4), 
(g)(5), and (g)(6) of this AD; and do all applicable related 
investigative and corrective actions; in accordance with the 
applicable work packages of the Accomplishment Instructions of 
Boeing Alert Service Bulletin 777-78A0065, Revision 2, dated May 6, 
2010, except as required by paragraph (h)(5) of this AD. Do all 
applicable related investigative and corrective actions before 
further flight.

[[Page 39551]]

Repeat the applicable inspections, replacement, and installations 
required by paragraphs (g)(1), (g)(2), (g)(3), (g)(4), (g)(5), and 
(g)(6) of this AD thereafter at the applicable intervals specified 
in paragraph 1.E., ``Compliance,'' of Boeing Alert Service Bulletin 
777-78A0065, Revision 2, dated May 6, 2010.
    (1) Do a detailed inspection of all T/R inner wall insulation 
blanket edges, grommet holes, penetrations, and seams for sealant 
that is cracked, has gaps, is loose, or is missing; do a general 
visual inspection of click bond studs, blanket studs, and temporary 
fasteners; and replace sealant as applicable.
    (2) Do the actions specified by either paragraph (g)(2)(i) or 
(g)(2)(ii) of this AD.
    (i) Do a full inner wall panel nondestructive test (NDT) 
inspection for delamination and disbonding of each T/R half, and do 
a general visual inspection for areas of thermal degradation.
    (ii) Do a limited area NDT inspection of the inner wall panel of 
each T/R half for delamination and disbonding, and do a general 
visual inspection for areas of thermal degradation.
    (3) Do a general visual inspection of the T/R perforated wall 
aft of the intermediate pressure compressor 8th stage (IP8) and the 
high pressure compressor 3rd stage (HP3) bleed port exits for a 
color that is different from that of the general area.
    (4) Do a detailed inspection of the PDOS lug bushings on the 
upper number 1 compression pad fittings to detect hole elongation, 
deformation, and contact with the PDOS actuator; and install a PDOS 
actuator rod and sealant.
    (5) Do an NDT inspection for unsatisfactory number 1 upper and 
numbers 1 and 2 lower compression pad fittings.
    (6) Install and seal insulation blankets.

(h) Exceptions to Specifications of Boeing Alert Service Bulletin 777-
78A0065, Revision 2, Dated May 6, 2010

    (1) Where paragraph 1.E., ``Compliance,'' of Boeing Alert 
Service Bulletin 777-78A0065, Revision 2, dated May 6, 2010, 
specifies a compliance time ``after the date on the original issue 
of this service bulletin,'' this AD requires compliance within the 
specified compliance time after the effective date of this AD.
    (2) Where table 2 of paragraph 1.E., ``Compliance,'' in Boeing 
Alert Service Bulletin 777-78A0065, Revision 2, dated May 6, 2010, 
specifies a compliance time of ``2,000 flight cycles after the date 
of the operator's own inspections,'' for doing Work Packages 2 and 
5, or Work Packages 5 and 6, this AD requires compliance within 
2,000 flight cycles after the date of the operator's own 
inspections, or within 12 months after the effective date of this 
AD, whichever occurs later.
    (3) Where the Condition column in table 2 of paragraph 1.E., 
``Compliance,'' of Boeing Alert Service Bulletin 777-78A0065, 
Revision 2, dated May 6, 2010, refers to a T/R half that has or has 
not been inspected before ``the date on this service bulletin,'' 
this AD requires compliance for each corresponding T/R half that has 
or has not been inspected before the effective date of this AD.
    (4) Where the Condition column in tables 2 and 3 of paragraph 
1.E., ``Compliance,'' of Boeing Alert Service Bulletin 777-78A0065, 
Revision 2, dated May 6, 2010, refers to ``total flight cycles,'' 
this AD applies to each T/R half with the specified total flight 
cycles as of the effective date of this AD.
    (5) Where Boeing Alert Service Bulletin 777-78A0065, Revision 2, 
dated May 6, 2010, specifies to contact Boeing for appropriate 
action: Before further flight, repair using a method approved in 
accordance with the procedures specified in paragraph (r) of this 
AD.

(i) Repetitive NDT and Additional Inspections for Airplanes With TPS 
Insulation Blankets (P/N 315W5115-(XX)) Installed

    For airplanes with TPS insulation blankets, P/N 315W5115-(XX): 
Within 2,000 flight cycles after doing any NDT inspection specified 
in Boeing Special Attention Service Bulletin 777-78-0071; or within 
2,000 flight cycles after doing any NDT inspection specified in 
Boeing Service Bulletin 777-78-0082; or within 30 days after the 
effective date of this AD; whichever occurs latest; do the 
inspections specified in paragraphs (i)(1) and (i)(2) of this AD, 
and do all applicable related investigative and corrective actions, 
in accordance with the Accomplishment Instructions of Boeing Special 
Attention Service Bulletin 777-78-0071, Revision 2, dated July 23, 
2013, or in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 777-78-0082, Revision 1, dated June 15, 
2015, as applicable; except as required by paragraph (m) of this AD. 
Do all applicable related investigative and corrective actions 
before further flight. Repeat the inspections specified in 
paragraphs (i)(1) and (i)(2) of this AD thereafter at the applicable 
time specified in paragraph 1.E., ``Compliance,'' of Boeing Special 
Attention Service Bulletin 777-78-0071, Revision 2, dated July 23, 
2013; or Boeing Service Bulletin 777-78-0082, Revision 1, dated June 
15, 2015; as applicable.
    (1) Do an NDT inspection of the full T/R inner wall panel for 
delaminations and disbonds.
    (2) Do a detailed inspection of the perforated side of the T/R 
inner wall aft of the IP8 and the HP3 bleed port exits for color 
that is different from the normal T/R perforated wall color.

(j) Concurrent Requirements for Paragraph (i) of This AD

    For airplanes with TPS insulation blankets, P/N 315W5115-(XX), 
on which any action specified in Boeing Special Attention Service 
Bulletin 777-78-0071 have been done but the actions specified in 
paragraphs (j)(1) and (j)(2) of this AD have not been done: Prior to 
or concurrently with doing the inspection required by paragraph (i) 
of this AD, do the actions specified in paragraphs (j)(1) and (j)(2) 
of this AD, in accordance with the Accomplishment Instructions of 
Boeing Special Attention Service Bulletin 777-78-0071, Revision 2, 
dated July 23, 2013, except as required by paragraph (m) of this AD.
    (1) Install click bond covers and bracket and replace the 
washers.
    (2) Do a detailed inspection of the compression fitting for 
incorrect pin orientation, and do all applicable related 
investigative and corrective actions. Do all applicable related 
investigative and corrective actions before further flight.

(k) Repetitive Electronic Engine Control (EEC) Wire Bundle Inspections 
for Airplanes With TPS Insulation Blankets (P/N 315W5115-(XX)) 
Installed

    For airplanes with TPS insulation blankets, P/N 315W5115-(XX): 
Do the inspections specified in paragraphs (k)(1) or (k)(2) of this 
AD, as applicable.
    (1) For airplanes on which any inspection specified in Boeing 
Special Attention Service Bulletin 777-78-0071 has been done: Within 
2,000 flight hours after doing a detailed inspection of the EEC wire 
bundles and clips as specified in Boeing Special Attention Service 
Bulletin 777-78-0071, or within 500 flight hours after the effective 
date of this AD, whichever occurs later; do a detailed inspection of 
the EEC wire bundles and clips for damage, and do all applicable 
corrective actions, in accordance with the Accomplishment 
Instructions of Boeing Special Attention Service Bulletin 777-78-
0071, Revision 2, dated July 23, 2013, except as required by 
paragraph (m) of this AD. Do all applicable corrective actions 
before further flight. Repeat the inspection thereafter at the 
applicable time specified in table 5 of paragraph 1.E., 
``Compliance,'' of Boeing Special Attention Service Bulletin 777-78-
0071, Revision 2, dated July 23, 2013.
    (2) For airplanes on which any inspection specified in Boeing 
Service Bulletin 777-78-0082, has been done: Within 2,000 flight 
hours after doing a detailed inspection of the EEC wire bundles and 
clips as specified in Boeing Special Attention Service Bulletin 777-
78-0082, or within 500 flight hours after the effective date of this 
AD, whichever occurs later; do a detailed inspection for damage of 
the EEC wire bundles and clips, and do all applicable corrective 
actions, in accordance with the Accomplishment Instructions of 
Boeing Service Bulletin 777-78-0082, Revision 1, dated June 15, 
2015, except as required by paragraph (m) of this AD. Do all 
applicable corrective actions before further flight. Repeat the 
inspection thereafter at the applicable time specified in table 5 of 
paragraph 1.E., ``Compliance,'' of Boeing Service Bulletin 777-78-
0082, Revision 1, dated June 15, 2015.

(l) T/R Inner Wall Installation

    Within 48 months after the effective date of this AD: Install 
serviceable T/R halves, in accordance with the Accomplishment 
Instructions of Boeing Alert Service Bulletin 777-78A0094, dated 
July 29, 2014, except as required by paragraph (m) of this AD. The 
definition of a serviceable T/R half is specified in Boeing Alert 
Service Bulletin 777-78A0094, dated July 29, 2014. Accomplishing the 
installation specified in this paragraph and the revision to the 
maintenance or inspection program required by paragraph (n) of this 
AD terminates the

[[Page 39552]]

actions required by paragraphs (g), (i), (j), and (k) of this AD.

(m) Exceptions to Service Information Specified in Paragraphs (i), (j), 
(k), and (l) of This AD

    Where Boeing Alert Service Bulletin 777-78A0094, dated July 29, 
2014; Boeing Service Bulletin 777-78-0082, Revision 1, dated June 
15, 2015; and Boeing Special Attention Service Bulletin 777-78-0071, 
Revision 2, dated July 23, 2013; specify to contact Boeing for 
appropriate action: Before further flight, repair using a method 
approved in accordance with the procedures specified in paragraph 
(r) of this AD.

(n) Revise the Maintenance or Inspection Program

    Within 30 days after the effective date of this AD, revise the 
maintenance or inspection program, as applicable, to incorporate 
Airworthiness Limitations 78-AWL-01, Thrust Reverser Thermal 
Protection System; and 78-AWL-02, Thrust Reverser Inner Wall; as 
specified in Boeing 777 Maintenance Planning Data (MPD) Document, 
Section 9, Airworthiness Limitations (AWLs) and Certification 
Maintenance Requirements (CMRs), D622W001-9, Revision dated November 
2015. The initial compliance times for AWLs 78-AWL-01, Thrust 
Reverser Thermal Protection System, and 78-AWL-02, Thrust Reverser 
Inner Wall, as specified in Boeing 777 MPD Document, Section 9, AWLs 
and CMRs, D622W001-9, Revision dated November 2015, are at the 
applicable time specified in paragraph (n)(1) or (n)(2) of this AD.
    (1) For airplanes on which any inspections required by paragraph 
(i) of this AD are done: Concurrent with the next inspection 
required by paragraph (i) of this AD, or within 30 days after the 
effective date of this AD, whichever occurs later.
    (2) For airplanes on which the installation required by 
paragraph (l) of this AD is done: At the later of the times 
specified in paragraph (n)(2)(i) and (n)(2)(ii) of this AD.
    (i) Within 1,125 days or 6,000 flight cycles, whichever occurs 
first after accomplishing the installation required by paragraph (l) 
of this AD.
    (ii) Within 30 days after the effective date of this AD.

(o) No Alternative Actions or Intervals

    After the maintenance or inspection program, as applicable, has 
been revised as required by paragraph (n) of this AD, no alternative 
actions (e.g., inspections) or intervals may be used unless the 
actions or intervals are approved as an alternative method of 
compliance (AMOC) in accordance with the procedures specified in 
paragraph (r) of this AD.

(p) Credit for Previous Actions

    (1) 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 777-
78A0065, dated June 23, 2008; or Boeing Alert Service Bulletin 777-
78A0065, Revision 1, dated January 29, 2009. This service 
information is not incorporated by reference in this AD.
    (2) This paragraph provides credit for the actions specified in 
paragraph (i) of this AD, if those actions were performed before the 
effective date of this AD using any service information specified in 
paragraphs (p)(2)(i), (p)(2)(ii), and (p)(2)(iii) of this AD. This 
service information is not incorporated by reference in this AD.
    (i) Boeing Service Bulletin 777-78-0082, dated November 9, 2011.
    (ii) Boeing Special Attention Service Bulletin 777-78-0071, 
dated November 25, 2009.
    (iii) Boeing Special Attention Service Bulletin 777-78-0071, 
Revision 1, dated September 8, 2010.
    (3) This paragraph provides credit for the actions specified in 
paragraph (j) of this AD, if those actions were performed before the 
effective date of this AD using Boeing Special Attention Service 
Bulletin 777-78-0071, Revision 1, dated September 8, 2010. This 
service information is not incorporated by reference in this AD.
    (4) This paragraph provides credit for the actions specified in 
paragraph (k)(2) of this AD, if those actions were performed before 
the effective date of this AD using Boeing Service Bulletin 777-78-
0082, dated November 9, 2011. This service information is not 
incorporated by reference in this AD.
    (5) This paragraph provides credit for the actions specified in 
paragraph (n) of this AD, if those actions were performed before the 
effective date of this AD using Boeing 777 MPD Document, Section 9, 
AWLs and CMRs, D622W001-9, Revision dated October 2014. This service 
information is not incorporated by reference in this AD.

(q) Terminating Action for AD 2005-07-24, Amendment 39-14049 (70 FR 
18285, April 11, 2005)

    Accomplishing the actions specified in paragraph (q)(1), (q)(2), 
or (q)(3) of this AD terminates the actions required by paragraphs 
(f), (g), and (h) of AD 2005-07-24, Amendment 39-14049 (70 FR 18285, 
April 11, 2005).
    (1) The actions required by paragraph (g) of this AD.
    (2) The inspections required by paragraphs (i) and (k) of this 
AD, and, as applicable, the actions required by paragraph (j) of 
this AD.
    (3) The installation specified in paragraph (l) of this AD.

(r) 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 (s)(1) 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, 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.

(s) Related Information

    (1) For more information about this AD, contact Kevin Nguyen, 
Aerospace Engineer, Propulsion Branch, ANM-140S, FAA, Seattle ACO, 
1601 Lind Avenue SW., Renton, Washington 98057-3356; phone: 425-917-
6501; fax: 425-917-6590; email: kevin.nguyen@faa.gov.
    (2) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (t)(3) and (t)(4) of this AD.

(t) 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 Alert Service Bulletin 777-78A0065, Revision 2, dated 
May 6, 2010.
    (ii) Boeing Alert Service Bulletin 777-78A0094, dated July 29, 
2014.
    (iii) Boeing Service Bulletin 777-78-0082, Revision 1, dated 
June 15, 2015.
    (iv) Boeing Special Attention Service Bulletin 777-78-0071, 
Revision 2, dated July 23, 2013.
    (v) Boeing 777 Maintenance Planning Data (MPD) Document, Section 
9, Airworthiness Limitations (AWLs) and Certification Maintenance 
Requirements (CMRs), D622W001-9, Revision dated November 2015.
    (3) For service information identified in this AD, contact 
Boeing Commercial Airplanes, Attention: Data & Services Management, 
P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone: 206-544-
5000, extension 1; fax: 206-766-5680; Internet: https://www.myboeingfleet.com.
    (4) You may view this service information at 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.
    (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.


[[Page 39553]]


    Issued in Renton, Washington, on May 20, 2016.
Victor Wicklund,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2016-13051 Filed 6-16-16; 8:45 am]
BILLING CODE 4910-13-P


