[Federal Register Volume 87, Number 72 (Thursday, April 14, 2022)]
[Proposed Rules]
[Pages 22158-22161]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-07903]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0290; Project Identifier AD-2021-01266-T]
RIN 2120-AA64
Airworthiness Directives; The Boeing Company Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for certain The Boeing Company Model 787-8, 787-9, and 787-10
airplanes. This proposed AD was prompted by a report from Boeing that
Rolls-Royce Deutschland Ltd & Co KG (RRD) discovered a design issue in
the engine fuel feed system, which could result in fuel flow
restrictions to both engines when ice that has accumulated in the
airplane fuel feed system suddenly releases into the engines. This
proposed AD would require revising the existing airplane flight manual
(AFM) to update the limitations on minimum fuel temperatures. The FAA
is proposing this AD to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by May 31,
2022.
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 https://www.regulations.gov. Follow the instructions for submitting comments.
Fax: 202-493-2251.
Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
Examining the AD Docket
You may examine the AD docket at https://www.regulations.gov by
searching for and locating Docket No.
[[Page 22159]]
FAA-2022-0290; 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 NPRM, any comments received, and other information. The
street address for Docket Operations is listed above.
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:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2022-0290; Project Identifier
AD-2021-01266-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
https://www.regulations.gov, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Takahisa 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]. Any
commentary that the FAA receives which is not specifically designated
as CBI will be placed in the public docket for this rulemaking.
Background
The FAA has received a report from Boeing that affects certain
Model 787-8, 787-9, and 787-10 airplanes, with RRD Model Trent 1000
engines installed. RRD discovered and reported to Boeing that a design
issue in the engine fuel feed system could result in fuel flow
restrictions to both engines when ice that has accumulated in the
airplane fuel feed system suddenly releases into the engines. The
sudden release of accumulated ice into the engine fuel feed system, in
combination with low fuel temperatures, could cause freezing
temperatures at the inlet of certain engine fuel feed system
components. This condition, if not addressed, could result in fuel flow
restrictions to both engines, causing a potential loss of dual engine
thrust control and reduced controllability of the airplane.
Explanation of Applicability
The applicability of this proposed AD includes additional
designations for RRD Model Trent 1000 engines not explicitly identified
on the model list of the FAA Type Certificate Data Sheet (TCDS) Number
E00076EN, but are identified on the EASA TCDS EASA.E.036. The
parenthetical text included in paragraph (c) of this proposed AD is an
additional identifier for RRD Model Trent 1000 engines that specifies
certain build standards have been incorporated on the engine. The
designation of ``/01'' identifies RRD Model Trent 1000 engines on which
Service Bulletin 72-G319 has been incorporated, and ``/01A'' identifies
RRD Model Trent 1000 engines on which Service Bulletin 72-G893 has been
incorporated.
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require revising the existing AFM to update
the limitations on minimum fuel temperatures.
Compliance With AFM Revisions
Section 91.9 prohibits any person from operating a civil aircraft
without complying with the operating limitations specified in the AFM.
FAA regulations also require operators to furnish pilots with any
changes to the AFM (14 CFR 121.137) and pilots in command to be
familiar with the AFM (14 CFR 91.505).
Interim Action
The FAA considers this proposed AD interim action. Boeing is
currently working with RRD to develop updated electronic engine control
(EEC) software, which will change the engine oil temperature amber line
indicated in the engine indication and crew alerting system (EICAS).
This change will ensure that, before takeoff, the engine oil
temperature would be warm enough to operate the engine with cold fuel.
The updated EEC software combined with the action required by this
proposed AD will address the unsafe condition identified in this AD.
Once this software is developed, approved, and available, the FAA might
consider additional rulemaking.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 14 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Revising the existing AFM.......... 1 work-hour x $85 per hour $0 $85 $1,190
= $85.
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[[Page 22160]]
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 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
The FAA 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) Would not affect intrastate aviation in Alaska, and
(3) Would 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:
The Boeing Company: Docket No. FAA-2022-0290; Project Identifier AD-
2021-01266-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by May 31, 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, with Rolls-Royce
Deutschland Ltd & Co KG Model Trent 1000-A (including -A/01 and -A/
01A), Trent 1000-A2, Trent 1000-AE (including -AE/01A), Trent 1000-
AE2, Trent 1000-AE3, Trent 1000-C (including -C/01 and -C/01A),
Trent 1000-C2, Trent 1000-CE (including -CE/01A), Trent 1000-CE2,
Trent 1000-CE3, Trent 1000-D (including -D/01 and -D/01A), Trent
1000-D2, Trent 1000-D3, Trent 1000-E (including -E/01 and -E/01A),
Trent 1000-E2, Trent 1000-G (including -G/01 and -G/01A), Trent
1000-G2, Trent 1000-G3, Trent 1000-H (including -H/01 and -H/01A),
Trent 1000-H2, Trent 1000-H3, Trent 1000-J2, Trent 1000-J3, Trent
1000-K2, Trent 1000-K3, Trent 1000-L2, Trent 1000-L3, Trent 1000-M3,
Trent 1000-N3, Trent 1000-P3, Trent 1000-Q3, or Trent 1000-R3
engines installed.
(d) Subject
Air Transport Association (ATA) of America Code 28, Fuel.
(e) Unsafe Condition
This AD was prompted by a report from Boeing that Rolls-Royce
Deutschland Ltd & Co KG discovered a design issue in the engine fuel
feed system, which could result in fuel flow restrictions to both
engines when ice that has accumulated in the airplane fuel feed
system suddenly releases into the engines. The sudden release of
accumulated ice into the engine fuel feed system, in combination
with low fuel temperatures, could cause freezing temperatures at the
inlet of certain engine fuel feed system components. The FAA is
issuing this AD to address possible fuel flow restrictions to both
engines, which could result in loss of dual engine thrust control
and reduced controllability of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Airplane Flight Manual (AFM) Revision
Within 30 days after the effective date of this AD, revise the
existing AFM to incorporate the information specified in figure 1 to
paragraph (g) of this AD into the ``Certificate Limitations''
chapter of the applicable Engine Appendix of the existing AFM.
[GRAPHIC] [TIFF OMITTED] TP14AP22.044
[[Page 22161]]
(h) 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 paragraph (i) 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 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 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.
(i) 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].
Issued on March 17, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-07903 Filed 4-13-22; 8:45 am]
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