83 FR 18208 - Airworthiness Directives; The Boeing Company Airplanes
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration Federal Register Volume 83, Issue 81 (April 26, 2018)
Federal Aviation Administration
Federal Register Volume 83, Issue 81 (April 26, 2018)
| Page Range | 18208-18219 | |
| FR Document | 2018-08951 |
[Federal Register Volume 83, Number 81 (Thursday, April 26, 2018)] [Rules and Regulations] [Pages 18208-18219] From the Federal Register Online [www.thefederalregister.org] [FR Doc No: 2018-08951] ======================================================================= ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2018-0304; Product Identifier 2018-NM-065-AD; Amendment 39-19261; AD 2018-09-05] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for comments. ----------------------------------------------------------------------- SUMMARY: We are adopting a new airworthiness directive (AD) for The Boeing Company Model 787-8 and 787-9 airplanes powered by Rolls-Royce plc (RR) Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000- J2, Trent 1000-K2, and Trent 1000-L2 turbofan engines. This AD requires revising the airplane flight manual (AFM) to limit extended operations (ETOPS). This AD was prompted by a report from the engine manufacturer indicating that after an engine failure, prolonged operation at high thrust settings on the remaining engine during an ETOPS diversion may result in failure of the remaining engine before the diversion can be safely completed. We have determined that updated AFM limitations are needed to minimize the potential for intermediate pressure compressor (IPC) blade failures under certain conditions. We are issuing this AD to address the unsafe condition on these products. DATES: This AD is effective April 26, 2018. We must receive comments on this AD by June 11, 2018. ADDRESSES: You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods:Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments. Fax: 202-493-2251. Mail: U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. [[Page 18209]] 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-2018- 0304; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the regulatory evaluation, any comments received, and other information. The street address for Docket Operations (phone: 800-647-5527) is in the ADDRESSES section. Comments will be available in the AD docket shortly after receipt. 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: Takahisa.Kobayashi@faa.gov. SUPPLEMENTARY INFORMATION: Discussion Over the past year, we have been aware of several engine failures of Trent 1000 Package C engines due to failed compressor and turbine blades and seals. Package C engines are RR Trent 1000-A2, Trent 1000- AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 turbofan engines. During that same period, under the management programs for those engine issues, we have been aware of numerous reports of engine inspection findings of cracked blades resulting in unscheduled engine removals. Boeing reported to the FAA that the engine manufacturer recently determined that IPC stage 2 blades have a resonant frequency that is excited by the airflow conditions existing in the engine during operation at high thrust settings under certain temperature and altitude conditions. The resultant blade vibration can result in cumulative fatigue damage that can cause blade failure and consequent engine in-flight shutdown. In the event of a single engine in-flight shutdown during the cruise phase of flight, thrust on the remaining engine is normally increased to maximum continuous thrust (MCT). During a diversion following a single engine shutdown under an ETOPS flight, the remaining engine may operate at MCT for a prolonged period, during which the IPC stage 2 blades would be exposed to the resonant frequency condition. Therefore, an ETOPS diversion will put the remaining engine at an operating condition that would significantly increase the likelihood of failure of the remaining engine. In addition, if the remaining engine already had cracked IPC stage 2 blades, the likelihood of the remaining engine failing before a diversion can be safely completed will further increase. Related Rulemaking AD 2018-08-03, Amendment 39-19256 (83 FR 16768, April 17, 2018) (``AD 2018-08-03''), also requires revising the AFM to limit ETOPS on Boeing Model 787-8 and 787-9 airplanes powered by RR Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 turbofan engines. Actions Since AD 2018-08-03 Was Issued Based on further review of the AFM limitations, Boeing has updated the information reflected within the figures of AD 2018-08-03. The FAA has determined it is necessary to update the AFM limitations accordingly to minimize the potential for IPC blade failures under certain conditions. The FAA has determined that operation under AD 2018-08-03 is acceptable for safe operation until the new AD limitations are mandated. FAA's Determination We are issuing this AD because we evaluated all the relevant information and determined the unsafe condition described previously is likely to exist or develop in other products of the same type design. AD Requirements This AD requires revising the AFM to limit ETOPS, using the updated information referenced in figure 1 to paragraph (g) of this AD and figure 2 to paragraph (h) of this AD. Accomplishment of the AFM revisions required by this AD terminates all requirements of AD 2018- 08-03. Interim Action This AD is interim action. The manufacturer is currently developing a modification that will address the unsafe condition identified in this AD. Once this modification is developed, approved, and available, we might consider additional rulemaking. FAA's Justification and Determination of the Effective Date An unsafe condition exists that requires the immediate adoption of this AD without providing an opportunity for public comments prior to adoption. The FAA has found that the risk to the flying public justifies waiving notice and comment prior to adoption of this rule because unrecoverable thrust loss on both engines could lead to a forced landing. Therefore, we find good cause that notice and opportunity for prior public comment are impracticable. In addition, for the reasons stated above, we find that good cause exists for making this amendment effective in less than 30 days. Comments Invited This AD is a final rule that involves requirements affecting flight safety and was not preceded by notice and an opportunity for public comment. However, we invite you to send any written data, views, or arguments about this final rule. Send your comments to an address listed under the ADDRESSES section. Include the docket number FAA-2018- 0304 and Product Identifier 2018-NM-065-AD at the beginning of your comments. We specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of this final rule. We will consider all comments received by the closing date and may amend this final rule because of those comments. We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We will also post a report summarizing each substantive verbal contact we receive about this final rule. Costs of Compliance We estimate that this AD affects 14 airplanes of U.S. registry. We estimate the following costs to comply with this AD: Estimated Costs ---------------------------------------------------------------------------------------------------------------- Cost on U.S. Action Labor cost Parts cost Cost per registered product airplanes ---------------------------------------------------------------------------------------------------------------- AFM revisions...................... 1 work-hour x $85 per hour $0 $85 $1,190 = $85. ---------------------------------------------------------------------------------------------------------------- [[Page 18210]] Authority for This Rulemaking Title 49 of the United States Code specifies the FAA's authority to issue rules on aviation safety. Subtitle I, section 106, describes the authority of the FAA Administrator. ``Subtitle VII: Aviation Programs'' describes in more detail the scope of the Agency's authority. We are issuing this rulemaking under the authority described in Subtitle VII, Part A, Subpart III, Section 44701: ``General requirements.'' Under that section, Congress charges the FAA with promoting safe flight of civil aircraft in air commerce by prescribing regulations for practices, methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation is within the scope of that authority because it addresses an unsafe condition that is likely to exist or develop on products identified in this rulemaking action. This AD is issued in accordance with authority delegated by the Executive Director, Aircraft Certification Service, as authorized by FAA Order 8000.51C. In accordance with that order, issuance of ADs is normally a function of the Compliance and Airworthiness Division, but during this transition period, the Executive Director has delegated the authority to issue ADs applicable to transport category airplanes to the Director of the System Oversight Division. 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): 2018-09-05 The Boeing Company: Amendment 39-19261; Docket No. FAA- 2018-0304; Product Identifier 2018-NM-065-AD. (a) Effective Date This AD is effective April 26, 2018. (b) Affected ADs This AD affects AD 2018-08-03, Amendment 39-19256 (83 FR 16768, April 17, 2018) (``AD 2018-08-03''). (c) Applicability This AD applies to The Boeing Company Model 787-8 and 787-9 airplanes, certificated in any category, powered by Rolls-Royce plc (RR) Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 turbofan engines. (d) Subject Air Transport Association (ATA) of America Code 71, Power plant. (e) Unsafe Condition This AD was prompted by a report from the engine manufacturer indicating that after an engine failure, prolonged operation at high thrust settings on the remaining engine during an extended-operation (ETOPS) diversion may result in failure of the remaining engine before the diversion can be safely completed. We are issuing this AD to address unrecoverable thrust loss on both engines, which could lead to a forced landing. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Revision of Limitations Chapter in Airplane Flight Manual (AFM) Within 4 days after the effective date of this AD, revise the Certificate Limitations chapter of the applicable Boeing AFM Engine Appendix by incorporating the information in figure 1 to paragraph (g) of this AD. This may be accomplished by inserting a copy of this AD into the AFM. When information identical to that in figure 1 to paragraph (g) of this AD has been included in the Certificate Limitations chapter of the general revisions of the AFM, the general revisions may be inserted into the AFM, and the copy of this AD may be removed from the AFM. BILLING CODE 4910-13-P [[Page 18211]] [GRAPHIC] [TIFF OMITTED] TR26AP18.002 (h) Revision of Performance Chapter of AFM Concurrently with accomplishment of the requirements of paragraph (g) of this AD, revise the Performance chapter of the applicable Boeing AFM Engine Appendix by incorporating the information in figure 2 to paragraph (h) of this AD. This may be accomplished by inserting a copy of this AD into the AFM. When information identical to that in figure 2 to paragraph (h) of this AD has been included in the Performance chapter of the general revisions of the AFM, the general revisions may be inserted into the AFM, and the copy of this AD may be removed from the AFM. Guidance on flight path planning can be found in figure 3 to paragraph (h) of this AD. [[Page 18212]] [GRAPHIC] [TIFF OMITTED] TR26AP18.003 [[Page 18213]] [GRAPHIC] [TIFF OMITTED] TR26AP18.004 [[Page 18214]] [GRAPHIC] [TIFF OMITTED] TR26AP18.005 [[Page 18215]] [GRAPHIC] [TIFF OMITTED] TR26AP18.006 [[Page 18216]] [GRAPHIC] [TIFF OMITTED] TR26AP18.007 [[Page 18217]] [GRAPHIC] [TIFF OMITTED] TR26AP18.008 [[Page 18218]] [GRAPHIC] [TIFF OMITTED] TR26AP18.009 [[Page 18219]] (i) Terminating Action for AD 2018-08-03 Accomplishment of the actions required by paragraphs (g) and (h) of this AD terminates all requirements of AD 2018-08-03. (j) Alternative Methods of Compliance (AMOCs) (1) The Manager, Seattle ACO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (k) of this AD. Information may be emailed to: 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 Branch, to make those findings. To be approved, the repair method, modification deviation, or alteration deviation must meet the certification basis of the airplane, and the approval must specifically refer to this AD. (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 None. Issued in Des Moines, Washington, on April 24, 2018. Jeffrey E. Duven, Director, System Oversight Division, Aircraft Certification Service. [FR Doc. 2018-08951 Filed 4-25-18; 8:45 am] BILLING CODE 4910-13-C
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this section within 20 working days of affirmative finding required for granting DEPARTMENT OF TRANSPORTATION
the individual’s or Manager’s receipt of or continuing HRP certification. In this
the Administrative Judge’s decision; event, any HRP certification then in Federal Aviation Administration
(d) The copy of any request for further effect may be revoked, or, for HRP
review of the individual’s case by the candidates, may not be granted. 14 CFR Part 39
cognizant Under Secretary filed by the
(b) An HRP certified individual who
Manager shall be provided to the [Docket No. FAA–2018–0304; Product
individual by the Manager. receives notification of the Manager’s
Identifier 2018–NM–065–AD; Amendment
(e) The party filing a request for decision to revoke his or her 39–19261; AD 2018–09–05]
review of the individual’s case by the certification due to failure to cooperate
cognizant Under Secretary shall include may choose one of the following
RIN 2120–AA64
with the request a statement identifying options:
the issues on which it wishes the (1) Take no action; or Airworthiness Directives; The Boeing
cognizant Under Secretary to focus. (2) Within 20 working days after the Company Airplanes
(f) The Administrative Judge’s
individual received notice of the AGENCY: Federal Aviation
decision shall be considered final if a
Manager’s revocation decision, submit a Administration (FAA), DOT.
written request for review is not filed in
accordance with paragraph (c) of this written request by certified mail to the ACTION: Final rule; request for
section. Manager for reconsideration. The comments.
request must include the individual’s
§ 712.24 Final decision by DOE Under response to the information that gave SUMMARY: We are adopting a new
Secretary. rise to the revocation decision. airworthiness directive (AD) for The
(a) Within 10 calendar days of receipt (c) Upon receipt of the request for Boeing Company Model 787–8 and 787–
of the written request for review, the reconsideration, the Manager shall 9 airplanes powered by Rolls-Royce plc
Associate Under Secretary for (RR) Trent 1000–A2, Trent 1000–AE2,
notify the individual, in writing, within
Environment, Health, Safety and Trent 1000–C2, Trent 1000–CE2, Trent
20 calendar days of receipt of the
Security should forward to the 1000–D2, Trent 1000–E2, Trent 1000–
cognizant Under Secretary the written written appeal, as to whether the action
G2, Trent 1000–H2, Trent 1000–J2,
request for review, the Administrative to revoke certification was appropriate.
Trent 1000–K2, and Trent 1000–L2
Judge’s decision, and the administrative If the Manager determines that the turbofan engines. This AD requires
record. action was inappropriate, he or she shall revising the airplane flight manual
(b) Upon receipt of the written request reverse revocation. (AFM) to limit extended operations
for review, the Administrative Judge’s § 712.34 [Amended] (ETOPS). This AD was prompted by a
decision, and the administrative record, report from the engine manufacturer
the cognizant Under Secretary, in ■ 3. Section 712.34 is amended by indicating that after an engine failure,
consultation with the DOE General removing the language, ‘‘Director, Office prolonged operation at high thrust
Counsel, will issue a final written of Health and Safety’’ in paragraphs (a), settings on the remaining engine during
decision. The cognizant Under Secretary (b) introductory text, (c), and (d) and an ETOPS diversion may result in
may delegate this authority. In issuing a adding in its place ‘‘Associate Under failure of the remaining engine before
final decision, the cognizant Under Secretary for Environment, Health, the diversion can be safely completed.
Secretary shall expressly state that he or Safety and Security’’. We have determined that updated AFM
she is either revoking or restoring an limitations are needed to minimize the
individual’s HRP certification. A copy ■ 4. Section 712.35 is amended by potential for intermediate pressure
of this decision must be sent by certified revising the section heading and in the compressor (IPC) blade failures under
mail (return receipt requested) to the introductory text by removing the certain conditions. We are issuing this
Manager and to the individual. language, ‘‘Director, Office of Health AD to address the unsafe condition on
(c) The cognizant Under Secretary and Safety’’ and adding in its place these products.
shall consider only that evidence and ‘‘Associate Under Secretary for
DATES: This AD is effective April 26,
information in the administrative record Environment, Health, Safety and 2018.
at the time of the Administrative Judge’s Security’’. We must receive comments on this
decision. The revision reads as follows: AD by June 11, 2018.
§ 712.25 Cooperation by the individual. § 712.35 Associate Under Secretary for ADDRESSES: You may send comments,
(a) It is the responsibility of the HRP Environment, Health, Safety and Security. using the procedures found in 14 CFR
candidate or HRP certified individual to 11.43 and 11.45, by any of the following
* * * * *
provide full, frank, and truthful answers methods:
to relevant and material questions, and § 712.36 [Amended] • Federal eRulemaking Portal: Go to
when requested, furnish, or authorize http://www.regulations.gov. Follow the
others to furnish, information that DOE ■ 5. Section 712.36 is amended by: instructions for submitting comments.
deems pertinent to reach a decision ■ a. Removing the language, ‘‘Director, • Fax: 202–493–2251.
regarding HRP certification or Office of Health and Safety’’ in • Mail: U.S. Department of
recertification. This obligation to paragraphs (d)(1) and (d)(3) and adding Transportation, Docket Operations, M–
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cooperate applies at any stage, including in its place ‘‘Associate Under Secretary 30, West Building Ground Floor, Room
but not limited to initial certification, for Environment, Health, Safety and W12–140, 1200 New Jersey Avenue SE,
recertification, temporary removal, Security’’. Washington, DC 20590.
revocation, and/or hearing. The • Hand Delivery: Deliver to Mail
■ b. Removing paragraph (i).
individual or candidate may elect not to address above between 9 a.m. and 5
cooperate; however, such refusal may [FR Doc. 2018–08697 Filed 4–25–18; 8:45 am] p.m., Monday through Friday, except
prevent DOE from reaching an BILLING CODE 6450–01–P Federal holidays.
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Authority for This Rulemaking For the reasons discussed above, I (c) Applicability
Title 49 of the United States Code certify that this AD: This AD applies to The Boeing Company
specifies the FAA’s authority to issue (1) Is not a ‘‘significant regulatory Model 787–8 and 787–9 airplanes,
rules on aviation safety. Subtitle I, action’’ under Executive Order 12866, certificated in any category, powered by
section 106, describes the authority of (2) Is not a ‘‘significant rule’’ under Rolls-Royce plc (RR) Trent 1000–A2, Trent
the FAA Administrator. ‘‘Subtitle VII: DOT Regulatory Policies and Procedures 1000–AE2, Trent 1000–C2, Trent 1000–CE2,
Aviation Programs’’ describes in more (44 FR 11034, February 26, 1979), Trent 1000–D2, Trent 1000–E2, Trent 1000–
detail the scope of the Agency’s (3) Will not affect intrastate aviation G2, Trent 1000–H2, Trent 1000–J2, Trent
authority. in Alaska, and 1000–K2, and Trent 1000–L2 turbofan
We are issuing this rulemaking under (4) Will not have a significant engines.
the authority described in Subtitle VII, economic impact, positive or negative,
(d) Subject
Part A, Subpart III, Section 44701: on a substantial number of small entities
‘‘General requirements.’’ Under that under the criteria of the Regulatory Air Transport Association (ATA) of
section, Congress charges the FAA with Flexibility Act. America Code 71, Power plant.
promoting safe flight of civil aircraft in List of Subjects in 14 CFR Part 39 (e) Unsafe Condition
air commerce by prescribing regulations This AD was prompted by a report from
for practices, methods, and procedures Air transportation, Aircraft, Aviation
safety, Incorporation by reference, the engine manufacturer indicating that after
the Administrator finds necessary for an engine failure, prolonged operation at
safety in air commerce. This regulation Safety.
high thrust settings on the remaining engine
is within the scope of that authority Adoption of the Amendment during an extended-operation (ETOPS)
because it addresses an unsafe condition diversion may result in failure of the
that is likely to exist or develop on Accordingly, under the authority
delegated to me by the Administrator, remaining engine before the diversion can be
products identified in this rulemaking safely completed. We are issuing this AD to
action. the FAA amends 14 CFR part 39 as
follows: address unrecoverable thrust loss on both
This AD is issued in accordance with engines, which could lead to a forced
authority delegated by the Executive landing.
Director, Aircraft Certification Service, PART 39—AIRWORTHINESS
as authorized by FAA Order 8000.51C. DIRECTIVES (f) Compliance
In accordance with that order, issuance ■ 1. The authority citation for part 39 Comply with this AD within the
of ADs is normally a function of the continues to read as follows: compliance times specified, unless already
Compliance and Airworthiness done.
Division, but during this transition Authority: 49 U.S.C. 106(g), 40113, 44701.
(g) Revision of Limitations Chapter in
period, the Executive Director has § 39.13 [Amended] Airplane Flight Manual (AFM)
delegated the authority to issue ADs
applicable to transport category ■ 2. The FAA amends § 39.13 by adding Within 4 days after the effective date of
airplanes to the Director of the System the following new airworthiness this AD, revise the Certificate Limitations
Oversight Division. directive (AD): chapter of the applicable Boeing AFM Engine
Appendix by incorporating the information
2018–09–05 The Boeing Company:
Regulatory Findings in figure 1 to paragraph (g) of this AD. This
Amendment 39–19261; Docket No.
This AD will not have federalism FAA–2018–0304; Product Identifier may be accomplished by inserting a copy of
implications under Executive Order 2018–NM–065–AD. this AD into the AFM. When information
13132. This AD will not have a identical to that in figure 1 to paragraph (g)
(a) Effective Date of this AD has been included in the
substantial direct effect on the States, on
the relationship between the national This AD is effective April 26, 2018. Certificate Limitations chapter of the general
government and the States, or on the (b) Affected ADs revisions of the AFM, the general revisions
distribution of power and may be inserted into the AFM, and the copy
This AD affects AD 2018–08–03,
responsibilities among the various of this AD may be removed from the AFM.
Amendment 39–19256 (83 FR 16768, April
levels of government. 17, 2018) (‘‘AD 2018–08–03’’). BILLING CODE 4910–13–P
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Document Created: 2018-11-02 08:20:30
Document Modified: 2018-11-02 08:20:30
| Category | Regulatory Information | |
| Collection | Federal Register | |
| sudoc Class | AE 2.7: GS 4.107: AE 2.106: | |
| Publisher | Office of the Federal Register, National Archives and Records Administration | |
| Section | Rules and Regulations | |
| Action | Final rule; request for comments. | |
| Dates | This AD is effective April 26, 2018. | |
| 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] | |
| FR Citation | 83 FR 18208 | |
| RIN Number | 2120-AA64 | |
| CFR Associated | Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety |
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