Airworthiness Directives; The Boeing Company Airplanes, 1349-1352 [2022-00038]
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Federal Register / Vol. 87, No. 7 / Tuesday, January 11, 2022 / Rules and Regulations
procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your
request to your principal inspector or
responsible Flight Standards Office, as
appropriate. If sending information directly
to the manager of the certification office,
send it to ATTN: Program Manager,
Continuing Operational Safety, FAA, New
York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone
516–228–7300; fax 516–794–5531. Before
using any approved AMOC, notify your
appropriate principal inspector, or lacking a
principal inspector, the manager of the
responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain instructions
from a manufacturer, the instructions must
be accomplished using a method approved
by the Manager, New York ACO Branch,
FAA; or Transport Canada Civil Aviation
(TCCA); or Bombardier, Inc.’s TCCA Design
Approval Organization (DAO). If approved by
the DAO, the approval must include the
DAO-authorized signature.
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(j) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) TCCA AD
CF–2020–44, dated October 23, 2020, for
related information. This MCAI may be
found in the AD docket on the internet at
https://www.regulations.gov by searching for
and locating Docket No. FAA–2021–0784.
(2) For more information about this AD,
contact Elizabeth Dowling, Aerospace
Engineer, Mechanical Systems and
Administrative Services Section, FAA, New
York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone
516–228–7300; fax 516–794–5531; email 9avs-nyaco-cos@faa.gov.
(k) 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 this AD specifies otherwise.
(i) Bombardier Challenger 600 Time
Limits/Maintenance Checks (TLMC), Product
Support Publication (PSP) 605, Temporary
Revision (TR) 5–163, dated April 30, 2020.
(ii) Bombardier Challenger 601 TLMC, PSP
601–5, TR 5–267, dated April 30, 2020.
(iii) Bombardier Challenger 601 TLMC,
PSP 601A–5, TR 5–281, dated April 30, 2020.
(iv) Section 5–10–30, Airworthiness
Limitation Items, of the Bombardier
Challenger 604 TLMC, Publication No. CH
604 TLMC, Part 2, Revision 32, dated
December 18, 2019.
(v) Section 5–10–30, Airworthiness
Limitation Items, of the Bombardier
Challenger 605 TLMC, Publication No. CH
605 TLMC, Part 2, Revision 21, dated
December 18, 2019.
(vi) Section 5–10–30, Airworthiness
Limitation Items, of the Bombardier
Challenger 650 TLMC, Publication No. CH
650 TLMC, Part 2, Revision 8, dated
December 18, 2019.
(3) For service information identified in
this AD, contact Bombardier Business
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Aircraft Customer Response Center, 400 Coˆte
Vertu Road West, Dorval, Que´bec H4S 1Y9,
Canada; 514–855–2999; email ac.yul@
aero.bombardier.com; internet https://
www.bombardier.com.
(4) You may view this service information
at the FAA, Airworthiness Products Section,
Operational Safety 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,
email fr.inspection@nara.gov, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on December 3, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021–28567 Filed 1–10–22; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2021–0571; Project
Identifier AD–2021–00101–T; Amendment
39–21835; AD 2021–24–14]
RIN 2120–AA64
Airworthiness Directives; The Boeing
Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
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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, Airworthiness Products Section,
Operational Safety 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 at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0571.
Examining the AD Docket
You may examine the AD docket at
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0571; 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, any comments received, and
other information. The address for
Docket Operations is U.S. Department of
Transportation, Docket Operations, M–
30, West Building Ground Floor, Room
W12–140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
Tak
Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206–
231–3553; email: takahisa.kobayashi@
faa.gov.
FOR FURTHER INFORMATION CONTACT:
SUPPLEMENTARY INFORMATION:
The FAA is adopting a new
airworthiness directive (AD) for certain
The Boeing Company Model 787–8,
787–9, and 787–10 airplanes. This AD
was prompted by reports of damage to
the thrust reverser (TR) translating
sleeve secondary sliders due to contact
between the slider and the slider track
liner. This damage could reduce the
fatigue life of the slider below its full
design life for the TRs installed on
certain engines. This AD requires
determining the serial number of the TR
and performing applicable on-condition
actions; or replacing the TR with a
serviceable TR. The FAA is issuing this
AD to address the unsafe condition on
these products.
DATES: This AD is effective February 15,
2022.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of February 15, 2022.
ADDRESSES: For service information
identified in this final rule, contact
SUMMARY:
1349
Background
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to certain The Boeing Company
Model 787–8, 787–9, and 787–10
airplanes. The NPRM published in the
Federal Register on August 9, 2021 (86
FR 43443). The NPRM was prompted by
reports of damage to the TR translating
sleeve secondary sliders due to contact
between the slider and the slider track
liner. This damage was found on TR
sleeves installed only on certain
engines. In the NPRM, the FAA
proposed to require determining the
serial number of the TR and performing
applicable on-condition actions; or
replacing the TR with a serviceable TR.
The FAA is issuing this AD to address
this damage, which could result in
failure of the TR translating sleeve
secondary slider and possible
detachment of the outer cowl, which
could strike the fuselage, causing
damage to the airplane, and could result
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Federal Register / Vol. 87, No. 7 / Tuesday, January 11, 2022 / Rules and Regulations
in reduced control or performance of the
airplane.
Discussion of Final Airworthiness
Directive
Comments
The FAA received a comment from
the Air Line Pilots Association,
International (ALPA), who supported
the NPRM without change.
The FAA received additional
comments from one commenter, Boeing.
The following presents the comments
received on the NPRM and the FAA’s
response to each comment.
Request To Clarify Unsafe Condition
The Background section of the NPRM
and paragraph (e) of the proposed AD
stated that damage was found on TR
sleeves installed only on certain
engines. Boeing requested that the FAA
clarify the description of the unsafe
condition to state that this damage can
result in an unsafe condition on TR
sleeves installed on certain engines.
Boeing added that, although this
damage (gouging and grooving) is
possible on pre- and post-mission
improvement TRs installed on General
Electric and Rolls-Royce engines, it was
determined by the Boeing safety process
that the damage could result in an
unsafe condition only for the mission
improvement TRs on Rolls-Royce
engines.
The FAA agrees with Boeing’s
assertions, but disagrees with the
proposed wording because it does not
explain why the TRs installed on certain
other engines are not affected by this
safety issue. To clarify the description of
the unsafe condition, the FAA has
revised the SUMMARY and paragraph (e)
of this AD to indicate that damage to the
TR translating sleeve secondary sliders
could reduce the fatigue life of the slider
below its full design life for the TRs
installed on certain engines.
Conclusion
The FAA reviewed the relevant data,
considered any comments received, and
determined that air safety requires
adopting this AD as proposed. Except
for minor editorial changes, and any
other changes described previously, this
AD is adopted as proposed in the
NPRM. None of the changes will
increase the economic burden on any
operator.
Related Service Information Under 1
CFR Part 51
SB780043–00 RB, Issue 001, dated
January 15, 2021. This service
information specifies procedures for
determining the serial number of the
TR, and applicable on-condition
actions; or replacing the TR with a
serviceable TR. On-condition actions
include reworking affected TR slider
track liners; determining the serial
number of the TR translating sleeves;
checking to determine if certain TR
translating sleeves have been installed
on certain TRs; performing a detailed
inspection of the secondary sliders of
affected TR translating sleeves for
cracking, grooving, gouging damage, and
any existing repair; performing a dye
penetrant inspection on any cracking,
grooving or gouging damage, and any
existing repair for cracking; and
repairing any discrepancy found. 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 ADDRESSES.
Costs of Compliance
The FAA estimates that this AD
affects 14 airplanes of U.S. registry. The
FAA estimates the following costs to
comply with this AD:
The FAA reviewed Boeing Alert
Requirements Bulletin B787–81205–
ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Serial number inspection ............................
Replacement (per T/R half) ........................
6 work-hours × $85 per hour = $510 .........
12 work-hours × $85 per hour $1,020 .......
The FAA estimates the following
costs to do the following on-condition
actions. The FAA has no way of
Cost per
product
Parts cost
$0
0
Cost on U.S.
operators
$510
1,020
Up to $7,140.
Up to $14,280.
determining the number of aircraft that
might need these on-condition actions:
ESTIMATED COSTS OF ON-CONDITION ACTIONS
Action
Labor cost
Repair .......................................................................
Up to 100 work-hours × $85 per hour = Up to
$8,500.
Up to 4 work-hours × $85 per hour = Up to $340 ...
1 work-hour × $85 per hour = $85 ...........................
1 work-hour × $85 per hour = $85 ...........................
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Dye-penetrant inspection .........................................
TR sleeve serial number check ................................
Check to determine if TR translating sleeve has
been installed on certain TRs.
The FAA has received no definitive
data on which to base the cost estimates
for the on-condition rework and
detailed inspections specified in this
AD.
The FAA has included all known
costs in its cost estimate. According to
the manufacturer, however, some or all
of the costs of this AD may be covered
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under warranty, thereby reducing the
cost impact on affected operators.
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
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Cost per
product
Parts cost
$0
0
0
0
Up to $8,500.
Up to $340.
$85.
$85.
detail the scope of the Agency’s
authority.
The FAA is 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
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Federal Register / Vol. 87, No. 7 / Tuesday, January 11, 2022 / Rules and Regulations
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) Will not affect intrastate aviation
in Alaska, and
(3) Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
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
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive:
■
2021–24–14 The Boeing Company:
Amendment 39–21835; Docket No.
FAA–2021–0571; Project Identifier AD–
2021–00101–T.
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(a) Effective Date
This airworthiness directive (AD) is
effective February 15, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company
Model 787–8, 787–9, and 787–10 airplanes,
certificated in any category, powered by
Rolls-Royce Trent 1000 engines.
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(d) Subject
Air Transport Association (ATA) of
America Code 78, Thrust Reverser.
(e) Unsafe Condition
This AD was prompted by reports of
damage to the thrust reverser (TR) translating
sleeve secondary sliders due to contact
between the slider and the slider track liner.
This damage could reduce the fatigue life of
the slider below its full design life for the
TRs installed on certain engines. The FAA is
issuing this AD to address this damage,
which could result in failure of the TR
translating sleeve secondary slider and
possible detachment of the outer cowl, which
could strike the fuselage, causing damage to
the airplane, and could result in reduced
control or performance of the airplane.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Required Actions
For airplanes with an original
airworthiness certificate or original export
certificate of airworthiness issued on or
before the effective date of this AD: Except
as specified by paragraph (h) of this AD; at
the applicable times specified in the
‘‘Compliance’’ paragraph of Boeing Alert
Requirements Bulletin B787–81205–
SB780043–00 RB, Issue 001, dated January
15, 2021, do all applicable actions for Group
1, Configuration 1 airplanes as identified in,
and in accordance with, the Accomplishment
Instructions of Boeing Alert Requirements
Bulletin B787–81205–SB780043–00 RB, Issue
001, dated January 15, 2021.
Note 1 to paragraph (g): Guidance for
accomplishing the actions required by this
AD can be found in Boeing Alert Service
Bulletin B787–81205–SB780043–00, Issue
001, dated January 15, 2021, which is
referred to in Boeing Alert Requirements
Bulletin B787–81205–SB780043–00 RB, Issue
001, dated January 15, 2021.
(h) Exceptions to Service Information
Specifications
(1) Where Boeing Alert Requirements
Bulletin B787–81205–SB780043–00 RB, Issue
001, dated January 15, 2021, uses the phrase
‘‘the issue 001 date of Requirements Bulletin
B787–81205–SB780043–00 RB,’’ this AD
requires using ‘‘the effective date of this AD.’’
(2) Where Boeing Alert Requirements
Bulletin B787–81205–SB780043–00 RB, Issue
001, dated January 15, 2021, specifies
contacting Boeing for repair instructions or
for instructions to address certain conditions:
This AD requires doing the repair or doing
the instructions using a method approved in
accordance with the procedures specified in
paragraph (j) of this AD.
(i) Parts Installation Limitations
(1) As of the applicable compliance time
specified in paragraph (i)(1)(i) or (ii) of this
AD, no person may install on any airplane a
TR with serial number between 00110001
and 00312001 inclusive, on which all
applicable inspections and corrective actions
required by paragraph (g) of this AD have not
been accomplished.
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1351
(i) For airplanes with an original
airworthiness certificate or original export
certificate of airworthiness issued on or
before the effective date of this AD: After
accomplishing the actions required by
paragraph (g) of this AD.
(ii) For airplanes with an original
airworthiness certificate or original export
certificate of airworthiness issued after the
effective date of this AD: As of the effective
date of this AD.
(2) As of the applicable compliance time
specified in paragraph (i)(2)(i) or (ii) of this
AD, no person may install on any airplane a
TR translating sleeve with serial number
00125001 and subsequent, on which all
applicable inspections and corrective actions
required by paragraph (g) of this AD have not
been accomplished.
(i) For airplanes with an original
airworthiness certificate or original export
certificate of airworthiness issued on or
before the effective date of this AD: After
accomplishing the actions required by
paragraph (g) of this AD.
(ii) For airplanes with an original
airworthiness certificate or original export
certificate of airworthiness issued after the
effective date of this AD: As of the effective
date of this AD.
(3) As of the effective date of this AD, no
person may install a TR translating sleeve
that was originally installed on any airplane
with an original airworthiness certificate or
original export certificate of airworthiness
issued after the effective date of this AD; or
a TR translating sleeve with serial number
00125001 and subsequent, on which all
applicable inspections and corrective actions
specified in Boeing Alert Requirements
Bulletin B787–81205–SB780043–00 RB, Issue
001, dated January 15, 2021, have been
accomplished; on any airplane with a TR
with a serial number between 00110001 and
00312001 inclusive, unless all applicable
inspections and corrective actions specified
in Boeing Alert Requirements Bulletin B787–
81205–SB780043–00 RB, Issue 001, dated
January 15, 2021, have been accomplished on
that TR, except as specified in paragraph
(h)(2) of this AD.
(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 responsible Flight
Standards Office, as appropriate. If sending
information directly to the manager of the
certification office, send it to the attention of
the person identified in Related Information.
Information may be emailed to: 9-ANMSeattle-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 responsible Flight Standards 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 Company
Organization Designation Authorization
(ODA) that has been authorized by the
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Federal Register / Vol. 87, No. 7 / Tuesday, January 11, 2022 / Rules and Regulations
Manager, Seattle ACO Branch, FAA, 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.
(k) Related Information
For more information about this AD,
contact Tak Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO
Branch, 2200 South 216th St., Des Moines,
WA 98198; phone and fax: 206–231–3553;
email: takahisa.kobayashi@faa.gov.
(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 Alert Requirements Bulletin
B787–81205–SB780043–00 RB, Issue 001,
dated January 15, 2021.
(ii) [Reserved]
(3) For 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, Airworthiness Products Section,
Operational Safety 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,
fr.inspection@nara.gov, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued on November 17, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2022–00038 Filed 1–10–22; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
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[Docket No. FAA–2021–0658; Project
Identifier MCAI–2020–01582–T; Amendment
39–21850; AD 2021–25–07]
RIN 2120–AA64
Airworthiness Directives; Bombardier,
Inc., Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
AGENCY:
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ACTION:
Final rule.
The FAA is adopting a new
airworthiness directive (AD) for certain
Bombardier, Inc., Model BD–100–1A10
airplanes. This AD was prompted by a
discovery that a lockwire may not have
been installed on the side stay actuator
pin nut of the main landing gear (MLG).
This AD requires inspecting the lefthand and right-hand MLG side stay
actuator assembly pin nut for the
presence of a lockwire, and installing a
lockwire if necessary. The FAA is
issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective February 15,
2022.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of February 15, 2022.
ADDRESSES: For service information
identified in this final rule, contact
Bombardier, Inc., 200 Coˆte-Vertu Road
West, Dorval, Que´bec H4S 2A3, Canada;
North America toll-free telephone 1–
866–538–1247 or direct-dial telephone
1–514–855–2999; email ac.yul@
aero.bombardier.com; internet https://
www.bombardier.com. You may view
this service information at the FAA,
Airworthiness Products Section,
Operational Safety 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
https://www.regulations.gov by
searching for and locating Docket No.
FAA–2021–0658.
SUMMARY:
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0658; 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,
any comments received, and other
information. The address for Docket
Operations is 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:
Elizabeth Dowling, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, FAA, New York ACO
Branch, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; telephone
516–228–7300; fax 516–794–5531; email
9-avs-nyaco-cos@faa.gov.
SUPPLEMENTARY INFORMATION:
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Background
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
for Canada, has issued TCCA AD CF–
2020–52, dated November 30, 2020 (also
referred to after this as the Mandatory
Continuing Airworthiness Information,
or the MCAI), to correct an unsafe
condition for certain Bombardier, Inc.,
Model BD–100–1A10 airplanes. You
may examine the MCAI in the AD
docket on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2021–
0658.
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to certain Bombardier, Inc., Model
BD–100–1A10 airplanes. The NPRM
published in the Federal Register on
August 12, 2021 (86 FR 44314). The
NPRM was prompted by a discovery
that a lockwire may not have been
installed on the side stay actuator pin
nut of the MLG. The NPRM proposed to
require inspecting the left-hand and
right-hand MLG side stay actuator
assembly pin nut for the presence of a
lockwire, and installing a lockwire if
necessary. The FAA is issuing this AD
to address a possible missing lockwire,
which could result in loss of the nut,
and if undetected, lead to the collapse
of the affected MLG. See the MCAI for
additional background information.
Comments
The FAA gave the public the
opportunity to participate in developing
this final rule. The FAA received no
comments on the NPRM or on the
determination of the cost to the public.
Conclusion
The FAA reviewed the relevant data
and determined that air safety and the
public interest require adopting this
final rule as proposed, except for minor
editorial changes. The FAA has
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.
Related Service Information Under 1
CFR Part 51
Bombardier has issued Service
Bulletin 100–32–36, dated June 25,
2020; and Service Bulletin 350–32–012,
dated June 25, 2020. This service
information describes procedures for
inspecting the left-hand and right-hand
MLG side stay actuator assembly pin
nut for presence of a lockwire and
installing a lockwire. These documents
E:\FR\FM\11JAR1.SGM
11JAR1
]]>Agencies
[Federal Register Volume 87, Number 7 (Tuesday, January 11, 2022)]
[Rules and Regulations]
[Pages 1349-1352]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-00038]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0571; Project Identifier AD-2021-00101-T;
Amendment 39-21835; AD 2021-24-14]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain The Boeing Company Model 787-8, 787-9, and 787-10 airplanes.
This AD was prompted by reports of damage to the thrust reverser (TR)
translating sleeve secondary sliders due to contact between the slider
and the slider track liner. This damage could reduce the fatigue life
of the slider below its full design life for the TRs installed on
certain engines. This AD requires determining the serial number of the
TR and performing applicable on-condition actions; or replacing the TR
with a serviceable TR. The FAA is issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective February 15, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of February 15,
2022.
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, Airworthiness Products Section, Operational Safety 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 at
https://www.regulations.gov by searching for and locating Docket No.
FAA-2021-0571.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0571; 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, any
comments received, and other information. The address for Docket
Operations is 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: Tak Kobayashi, Aerospace Engineer,
Propulsion Section, FAA, Seattle ACO Branch, 2200 South 216th St., Des
Moines, WA 98198; phone and fax: 206-231-3553; email:
[email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain The Boeing
Company Model 787-8, 787-9, and 787-10 airplanes. The NPRM published in
the Federal Register on August 9, 2021 (86 FR 43443). The NPRM was
prompted by reports of damage to the TR translating sleeve secondary
sliders due to contact between the slider and the slider track liner.
This damage was found on TR sleeves installed only on certain engines.
In the NPRM, the FAA proposed to require determining the serial number
of the TR and performing applicable on-condition actions; or replacing
the TR with a serviceable TR. The FAA is issuing this AD to address
this damage, which could result in failure of the TR translating sleeve
secondary slider and possible detachment of the outer cowl, which could
strike the fuselage, causing damage to the airplane, and could result
[[Page 1350]]
in reduced control or performance of the airplane.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from the Air Line Pilots Association,
International (ALPA), who supported the NPRM without change.
The FAA received additional comments from one commenter, Boeing.
The following presents the comments received on the NPRM and the FAA's
response to each comment.
Request To Clarify Unsafe Condition
The Background section of the NPRM and paragraph (e) of the
proposed AD stated that damage was found on TR sleeves installed only
on certain engines. Boeing requested that the FAA clarify the
description of the unsafe condition to state that this damage can
result in an unsafe condition on TR sleeves installed on certain
engines. Boeing added that, although this damage (gouging and grooving)
is possible on pre- and post-mission improvement TRs installed on
General Electric and Rolls-Royce engines, it was determined by the
Boeing safety process that the damage could result in an unsafe
condition only for the mission improvement TRs on Rolls-Royce engines.
The FAA agrees with Boeing's assertions, but disagrees with the
proposed wording because it does not explain why the TRs installed on
certain other engines are not affected by this safety issue. To clarify
the description of the unsafe condition, the FAA has revised the
SUMMARY and paragraph (e) of this AD to indicate that damage to the TR
translating sleeve secondary sliders could reduce the fatigue life of
the slider below its full design life for the TRs installed on certain
engines.
Conclusion
The FAA reviewed the relevant data, considered any comments
received, and determined that air safety requires adopting this AD as
proposed. Except for minor editorial changes, and any other changes
described previously, this AD is adopted as proposed in the NPRM. None
of the changes will increase the economic burden on any operator.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Boeing Alert Requirements Bulletin B787-81205-
SB780043-00 RB, Issue 001, dated January 15, 2021. This service
information specifies procedures for determining the serial number of
the TR, and applicable on-condition actions; or replacing the TR with a
serviceable TR. On-condition actions include reworking affected TR
slider track liners; determining the serial number of the TR
translating sleeves; checking to determine if certain TR translating
sleeves have been installed on certain TRs; performing a detailed
inspection of the secondary sliders of affected TR translating sleeves
for cracking, grooving, gouging damage, and any existing repair;
performing a dye penetrant inspection on any cracking, grooving or
gouging damage, and any existing repair for cracking; and repairing any
discrepancy found. 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 ADDRESSES.
Costs of Compliance
The FAA estimates that this AD affects 14 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per
Action Labor cost Parts cost product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Serial number inspection....... 6 work-hours x $85 $0 $510 Up to $7,140.
per hour = $510.
Replacement (per T/R half)..... 12 work-hours x 0 1,020 Up to $14,280.
$85 per hour
$1,020.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do the following on-
condition actions. The FAA has no way of determining the number of
aircraft that might need these on-condition actions:
Estimated Costs of On-Condition Actions
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Repair............................... Up to 100 work-hours x $0 Up to $8,500.
$85 per hour = Up to
$8,500.
Dye-penetrant inspection............. Up to 4 work-hours x 0 Up to $340.
$85 per hour = Up to
$340.
TR sleeve serial number check........ 1 work-hour x $85 per 0 $85.
hour = $85.
Check to determine if TR translating 1 work-hour x $85 per 0 $85.
sleeve has been installed on certain hour = $85.
TRs.
----------------------------------------------------------------------------------------------------------------
The FAA has received no definitive data on which to base the cost
estimates for the on-condition rework and detailed inspections
specified in this AD.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
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.
The FAA is 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
[[Page 1351]]
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) Will not affect intrastate aviation in Alaska, and
(3) Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
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:
2021-24-14 The Boeing Company: Amendment 39-21835; Docket No. FAA-
2021-0571; Project Identifier AD-2021-00101-T.
(a) Effective Date
This airworthiness directive (AD) is effective February 15,
2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to The Boeing Company Model 787-8, 787-9, and
787-10 airplanes, certificated in any category, powered by Rolls-
Royce Trent 1000 engines.
(d) Subject
Air Transport Association (ATA) of America Code 78, Thrust
Reverser.
(e) Unsafe Condition
This AD was prompted by reports of damage to the thrust reverser
(TR) translating sleeve secondary sliders due to contact between the
slider and the slider track liner. This damage could reduce the
fatigue life of the slider below its full design life for the TRs
installed on certain engines. The FAA is issuing this AD to address
this damage, which could result in failure of the TR translating
sleeve secondary slider and possible detachment of the outer cowl,
which could strike the fuselage, causing damage to the airplane, and
could result in reduced control or performance of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
For airplanes with an original airworthiness certificate or
original export certificate of airworthiness issued on or before the
effective date of this AD: Except as specified by paragraph (h) of
this AD; at the applicable times specified in the ``Compliance''
paragraph of Boeing Alert Requirements Bulletin B787-81205-SB780043-
00 RB, Issue 001, dated January 15, 2021, do all applicable actions
for Group 1, Configuration 1 airplanes as identified in, and in
accordance with, the Accomplishment Instructions of Boeing Alert
Requirements Bulletin B787-81205-SB780043-00 RB, Issue 001, dated
January 15, 2021.
Note 1 to paragraph (g): Guidance for accomplishing the actions
required by this AD can be found in Boeing Alert Service Bulletin
B787-81205-SB780043-00, Issue 001, dated January 15, 2021, which is
referred to in Boeing Alert Requirements Bulletin B787-81205-
SB780043-00 RB, Issue 001, dated January 15, 2021.
(h) Exceptions to Service Information Specifications
(1) Where Boeing Alert Requirements Bulletin B787-81205-
SB780043-00 RB, Issue 001, dated January 15, 2021, uses the phrase
``the issue 001 date of Requirements Bulletin B787-81205-SB780043-00
RB,'' this AD requires using ``the effective date of this AD.''
(2) Where Boeing Alert Requirements Bulletin B787-81205-
SB780043-00 RB, Issue 001, dated January 15, 2021, specifies
contacting Boeing for repair instructions or for instructions to
address certain conditions: This AD requires doing the repair or
doing the instructions using a method approved in accordance with
the procedures specified in paragraph (j) of this AD.
(i) Parts Installation Limitations
(1) As of the applicable compliance time specified in paragraph
(i)(1)(i) or (ii) of this AD, no person may install on any airplane
a TR with serial number between 00110001 and 00312001 inclusive, on
which all applicable inspections and corrective actions required by
paragraph (g) of this AD have not been accomplished.
(i) For airplanes with an original airworthiness certificate or
original export certificate of airworthiness issued on or before the
effective date of this AD: After accomplishing the actions required
by paragraph (g) of this AD.
(ii) For airplanes with an original airworthiness certificate or
original export certificate of airworthiness issued after the
effective date of this AD: As of the effective date of this AD.
(2) As of the applicable compliance time specified in paragraph
(i)(2)(i) or (ii) of this AD, no person may install on any airplane
a TR translating sleeve with serial number 00125001 and subsequent,
on which all applicable inspections and corrective actions required
by paragraph (g) of this AD have not been accomplished.
(i) For airplanes with an original airworthiness certificate or
original export certificate of airworthiness issued on or before the
effective date of this AD: After accomplishing the actions required
by paragraph (g) of this AD.
(ii) For airplanes with an original airworthiness certificate or
original export certificate of airworthiness issued after the
effective date of this AD: As of the effective date of this AD.
(3) As of the effective date of this AD, no person may install a
TR translating sleeve that was originally installed on any airplane
with an original airworthiness certificate or original export
certificate of airworthiness issued after the effective date of this
AD; or a TR translating sleeve with serial number 00125001 and
subsequent, on which all applicable inspections and corrective
actions specified in Boeing Alert Requirements Bulletin B787-81205-
SB780043-00 RB, Issue 001, dated January 15, 2021, have been
accomplished; on any airplane with a TR with a serial number between
00110001 and 00312001 inclusive, unless all applicable inspections
and corrective actions specified in Boeing Alert Requirements
Bulletin B787-81205-SB780043-00 RB, Issue 001, dated January 15,
2021, have been accomplished on that TR, except as specified in
paragraph (h)(2) of this AD.
(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 responsible Flight Standards Office,
as appropriate. If sending information directly to the manager of
the certification office, send it to the attention of the person
identified in Related Information. 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 responsible Flight Standards 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 Company Organization Designation
Authorization (ODA) that has been authorized by the
[[Page 1352]]
Manager, Seattle ACO Branch, FAA, 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.
(k) Related Information
For more information about this AD, contact Tak Kobayashi,
Aerospace Engineer, Propulsion Section, FAA, Seattle ACO Branch,
2200 South 216th St., Des Moines, WA 98198; phone and fax: 206-231-
3553; 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 Alert Requirements Bulletin B787-81205-SB780043-00
RB, Issue 001, dated January 15, 2021.
(ii) [Reserved]
(3) For 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,
Airworthiness Products Section, Operational Safety 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, [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued on November 17, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-00038 Filed 1-10-22; 8:45 am]
BILLING CODE 4910-13-P
