66310 Federal Register / Vol. 88, No. 186 / Wednesday, September 27, 2023 / Proposed Rules 

Appendixes 1 through 3, dated May 2023, are 

required for compliance for the replacement. 

(5) Where paragraph (4) of EASA AD 2023– 

0093R1 requires operators to ‘‘implement the 

instructions of the MMEL [master minimum 

equipment list] update,’’ this AD requires 

replacing those words with ‘‘implement the 

operator’s existing FAA-approved minimum 

equipment list (MEL) with the provisions 

specified in ‘The MMEL update’ as identified 

in EASA AD 2023–0093R1.’’ 

(6) Where paragraph (4) of EASA AD 2023– 

0093R1 specifies to ‘‘inform all flight crews, 

and, thereafter, operate the airplane 

accordingly,’’ this AD does not require those 

actions as those actions are already required 

by existing FAA operating regulations. 

(7) This AD does not adopt the ‘‘Remarks’’ 

section of EASA AD 2023–0093R1. 

(i) No Reporting Requirement 

Although certain service information 

specified in EASA AD 2023–0093R1 specifies 

to report certain information and send 

affected parts to the manufacturer, this AD 

does not require those actions. 

(j) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Validation 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 International Validation Branch, send 

it to the attention of the person identified in 

paragraph (k) of this AD. Information may be 

emailed to: 9-AVS-AIR-730-AMOC@faa.gov. 

(i) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the responsible Flight Standards Office. 

(ii) AMOCs approved previously for AD 

2022–07–15 are approved as AMOCs for the 

corresponding provisions of EASA AD 2023– 

0093R1 that are required by paragraph (g) of 

this AD. 

(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, International Validation 

Branch, FAA; or EASA; or Airbus SAS’s 

EASA Design Organization Approval (DOA). 

If approved by the DOA, the approval must 

include the DOA-authorized signature. 

(3) Required for Compliance (RC): Except 

as required by paragraph (j)(2) of this AD, if 

any service information contains procedures 

or tests that are identified as RC, those 

procedures and tests must be done to comply 

with this AD; any procedures or tests that are 

not identified as RC are recommended. Those 

procedures and tests that are not identified 

as RC may be deviated from using accepted 

methods in accordance with the operator’s 

maintenance or inspection program without 

obtaining approval of an AMOC, provided 

the procedures and tests identified as RC can 

be done and the airplane can be put back in 

an airworthy condition. Any substitutions or 

changes to procedures or tests identified as 

RC require approval of an AMOC. 

(k) Additional Information 

For more information about this AD, 

contact Timothy Dowling, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone 206–231– 

3667; email Timothy.P.Dowling@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 this AD specifies otherwise. 

(3) The following service information was 

approved for IBR on [DATE 35 DAYS AFTER 

PUBLICATION OF THE FINAL RULE]. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2023–0093R1, dated May 15, 

2023. 

(ii) Airbus Alert Operators Transmission 

A32N025–22, Rev 01, dated May 10, 2023, 

including Appendixes 1 through 3, dated 

May 2023. 

(4) The following service information was 

approved for IBR on May 2, 2022 (87 FR 

22438, April 15, 2022). 

(i) Airbus Alert Operators Transmission 

A32N025–22, Rev 00, dated February 24, 

2022, including Appendixes 1 through 4, 

dated February 21, 2022. 

(ii) [Reserved] 

(5) For EASA AD 2023–0093R1, contact 

EASA, Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; telephone +49 221 8999 

000; email ADs@easa.europa.eu; website 

easa.europa.eu. You may find this EASA AD 

on the EASA website at ad.easa.europa.eu. 

(6) For Airbus service information 

identified in this AD, contact Airbus SAS, 

Airworthiness Office—EIAS, Rond-Point 

Emile Dewoitine No: 2, 31700 Blagnac Cedex, 

France; telephone +33 5 61 93 36 96; fax +33 

5 61 93 44 51; email account.airworth-eas@

airbus.com; website airbus.com. 

(7) 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. 

(8) 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: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on September 15, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–20399 Filed 9–26–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1879; Project 

Identifier AD–2023–00286–T] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to 

supersede Airworthiness Directive (AD) 

2019–16–05, which applies to all The 

Boeing Company Model 777 airplanes. 

AD 2019–16–05 requires an 

identification of the part number, and if 

applicable the serial number, of the 

Captain’s and First Officer’s seats, and 

applicable on-condition actions for 

affected seats. Since the FAA issued AD 

2019–16–05, the FAA has discovered 

that certain seat part numbers had been 

inadvertently omitted from the 

inspection requirements of AD 2019– 

16–05. This proposed AD would retain 

the requirements of AD 2019–16–05 and 

would add inspection of the previously 

omitted part numbers. 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 November 13, 

2023. 

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 

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. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1879; 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. 

Material Incorporated by Reference: 


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• For service information identified 

in this NPRM, 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; website 

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 

regulations.gov under Docket No. FAA– 

2023–1879. 

FOR FURTHER INFORMATION CONTACT: 

Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th St., 

Des Moines, WA 98198; phone: 206– 

231–3986; email: courtney.k.tuck@

faa.gov. 

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–2023–1879; Project Identifier AD– 

2023–00286–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 the 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 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this proposed AD. 

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 Courtney Tuck, 

Aviation Safety Engineer, FAA, 2200 

South 216th St., Des Moines, WA 98198; 

phone: 206–231–3986; email: 

courtney.k.tuck@faa.gov. Any 

commentary that the FAA receives that 

is not specifically designated as CBI will 

be placed in the public docket for this 

rulemaking. 

Background 

The FAA issued AD 2019–16–05, 

Amendment 39–19708 (84 FR 45895, 

September 23, 2019) (AD 2019–16–05), 

for all The Boeing Company Model 777– 

200, –200LR, –300, –300ER, and 777F 

series airplanes. AD 2019–16–05 was 

prompted by reports of uncommanded 

fore/aft movements of the Captain’s and 

First Officer’s seats. AD 2019–16–05 

requires an identification of the part 

number, and if applicable the serial 

number, of the Captain’s and First 

Officer’s seats, and applicable oncondition actions for affected seats. The 

FAA issued AD 2019–16–05 to address 

uncommanded fore/aft movement of the 

Captain’s and First Officer’s seats. An 

uncommanded fore/aft seat movement 

during a critical part of a flight, such as 

takeoff or landing, could cause a flight 

control obstruction or unintended flight 

control input, which could result in the 

loss of the ability to control the airplane. 

Actions Since AD 2019–16–05 Was 

Issued 

Since the FAA issued AD 2019–16– 

05, certain seat part numbers were 

discovered to have been inadvertently 

omitted from the service information, 

and were therefore not included in the 

requirements of AD 2019–16–05. 

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. 

Related Service Information Under 1 

CFR Part 51 

The FAA reviewed Boeing Special 

Attention Service Bulletin 777–25– 

0607, Revision 2, dated January 27, 

2023. The service information describes 

procedures for identification of the part 

number, and if applicable, the serial 

number, of the Captain’s and First 

Officer’s seats, and for applicable oncondition actions for affected seats. The 

on-condition actions include an 

inspection of each seat’s fore/aft and 

vertical manual control levers for 

looseness, installation of serviceable 

seats, and a seat functional test after any 

cable adjustment. 

The FAA also reviewed Boeing 

Special Attention Service Bulletin 777– 

25–0619, Revision 2, dated January 27, 

2023. The service information describes 

procedures for a detailed inspection and 

repetitive checks of the horizontal 

movement system for the Captain’s and 

First Officer’s seats for findings (e.g., 

evidence of cracks, scores, corrosion, 

dents, deformation or visible wear; and 

incorrectly assembled microswitch 

assemblies, actuators, and limit 

switches), and applicable on-condition 

actions. The on-condition actions 

include clearing the seat tracks of 

foreign object debris (FOD), overhauling 

the horizontal movement system, and 

replacing the horizontal actuator. The 

service information also describes 

procedures for an optional terminating 

action for the repetitive checks by 

installing a serviceable Captain’s or First 

Officer’s seat. 

This proposed AD would also require 

Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 1, dated 

August 8, 2018, which the Director of 

the Federal Register approved for 

incorporation by reference as of October 

8, 2019 (84 FR 45895, September 3, 

2019). 

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. 

Proposed AD Requirements in This 

NPRM 

Although this proposed AD does not 

explicitly restate the requirements of AD 

2019–16–05, this proposed AD would 

retain all of the requirements of AD 

2019–16–05. Those requirements are 

referenced in the service information 

identified previously, which, in turn, is 

referenced in paragraphs (g) and (h) of 

this proposed AD. This proposed AD 

would also require accomplishment of 

the actions specified in Boeing Special 

Attention Service Bulletin 777–25– 

0607, Revision 2, dated January 27, 

2023, and the actions identified as ‘‘RC’’ 

(required for compliance) in the 

Accomplishment Instructions of Boeing 

Special Attention Service Bulletin 777– 

25–0619, Revision 2, dated January 27, 

2023, described previously, except as 

discussed under ‘‘Differences Between 

this Proposed AD and the Service 

Information.’’ 

For information on the procedures 

and compliance times, see this service 


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information at regulations.gov under 

Docket No. FAA–2023–1879. 

Differences Between This Proposed AD 

and the Service Information 

The effectivity of Boeing Special 

Attention Service Bulletins 777–25– 

0607 and 777–25–0619, both Revision 2, 

dated January 27, 2023, is limited to 

Model 777–200, –200LR, –300, –300ER, 

and 777F airplanes with specific line 

numbers. However, the applicability of 

this proposed AD includes all Model 

777–200, –200LR, –300, –300ER, and 

777F series airplanes. Because the 

affected Captain’s and First Officer’s 

seats are rotable parts, the FAA has 

determined that these seats could later 

be installed on airplanes that were 

initially delivered with acceptable seats, 

thereby subjecting those airplanes to the 

identified unsafe condition. 

Where Boeing Special Attention 

Service Bulletin 777–25–0607, Revision 

2, dated January 27, 2023, specifies 

compliance within 72 months after the 

original issue date of the service 

bulletin, this proposed AD would 

require compliance with those actions 

within 36 months after the effective date 

of AD 2019–16–05. The 36-month 

compliance time corresponds to the 

compliance time in Boeing Special 

Attention Service Bulletin 777–25– 

0619, Revision 2, dated January 27, 

2023. The FAA determined during the 

development of AD 2019–16–05 that a 

36-month compliance time was 

appropriate for doing those actions. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 327 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS PER SEAT

Action Labor cost Parts cost Cost per product Cost on U.S. operators 

Identification, seat (retained 

actions from AD 2019–16– 

05).

1 work-hour × $85 per hour = 

$85.

$0 $85 ......................................... $27,795. 

Detailed inspection, horizontal 

movement system (retained 

actions from AD 2019–16– 

05).

1 work-hour × $85 per hour = 

$85.

0 $85 ......................................... $27,795. 

Checks, horizontal movement 

system (retained actions 

from AD 2019–16–05).

2 work-hour × $85 per hour = 

$170 per check cycle.

0 $170 per check cycle ............. $55,590 per check cycle. 

The FAA estimates the following 

costs to do any necessary on-condition 

actions that would be required. The 

FAA has no way of determining the 

number of aircraft that might need these 

on-condition actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS PER SEAT * 

Action Labor cost Parts cost Cost per product 

Adjustment, control lever cable ................. 1 work-hour × $85 per hour = $85 .......... $0 ....................................... $85. 

Overhaul, horizontal movement system .... 11 work-hours × $85 per hour = $935 .... Up to $5,824 ...................... Up to $6,759. 

Inspection of each seat’s fore/aft and 

vertical manual control levers.

1 work-hour × $85 per hour = $85 .......... $0 ....................................... $85. 

Installation of serviceable seats ................ 1 work-hour × $85 per hour = $85 .......... $0 ....................................... $85. 

Clearing FOD ............................................. 1 work-hour × $85 per hour = $85 .......... $0 ....................................... $85. 

Replacement of the horizontal actuator .... 1 work-hour × $85 per hour = $85, per 

actuator.

$7,937 per actuator ........... $8,022 per actuator. 

Functional test, adjusted control lever 

cable.

1 work-hour × $85 per hour = $85 .......... $0 ....................................... $85. 

* The estimated cost for tooling to align an affected seat for adjustment of the control lever cable is up to $46,064. 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some/all of 

the costs of this proposed 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 

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 has 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 that the proposed regulation: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Would not affect intrastate 

aviation in Alaska, and 


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(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 

■ 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: 

■ a. Removing Airworthiness Directive 

(AD) 2019–16–05, Amendment 39– 

19708 (84 FR 45895, September 3, 

2019), and 

■ b. Adding the following new AD: 

The Boeing Company: Docket No. FAA– 

2023–1879; Project Identifier AD–2023– 

00286–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by November 

13, 2023. 

(b) Affected ADs 

This AD replaces AD 2019–16–05, 

Amendment 39–19708 (84 FR 45895, 

September 3, 2019) (AD 2019–16–05). 

(c) Applicability 

This AD applies to all The Boeing 

Company Model 777–200, –200LR, –300, 

–300ER, and 777F series airplanes, 

certificated in any category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 25, Equipment/Furnishings. 

(e) Unsafe Condition 

This AD was prompted by reports of 

uncommanded fore/aft movement of the 

Captain’s and First Officer’s seats. The FAA 

is issuing this AD to address uncommanded 

fore/aft movement of the Captain’s and First 

Officer’s seats. An uncommanded fore/aft 

seat movement during a critical part of a 

flight, such as takeoff or landing, could cause 

a flight control obstruction or unintended 

flight control input, which could result in the 

loss of the ability to control the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Seat Part Number Identification and OnCondition Actions 

Except as specified in paragraph (i) of this 

AD: At the applicable time specified in 

Boeing Special Attention Service Bulletin 

777–25–0607, Revision 2, dated January 27, 

2023, do an inspection to determine the part 

number, and serial number as applicable, of 

the Captain’s and First Officer’s seats, and do 

all applicable on-condition actions, in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 777–25–0607, Revision 2, 

dated January 27, 2023. A review of airplane 

maintenance records is acceptable in lieu of 

this inspection if the part number and serial 

number of the Captain’s and First Officer’s 

seats can be conclusively determined from 

that review. 

(h) Detailed Inspection and Repetitive 

Checks of Horizontal Movement System and 

On-Condition Actions 

Except as specified in paragraph (i) of this 

AD: At the applicable times specified in 

paragraph 1.E., ‘‘Compliance,’’ of Boeing 

Special Attention Service Bulletin 777–25– 

0619, Revision 2, dated January 27, 2023, do 

all applicable actions identified as ‘‘RC’’ 

(required for compliance) in, and in 

accordance with, the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 777–25–0619, Revision 1, 

dated August 8, 2018, or Revision 2, dated 

January 27, 2023. As of the effective date of 

this AD, only Boeing Special Attention 

Service Bulletin 777–25–0619, Revision 2, 

dated January 27, 2023, may be used. Actions 

identified as terminating action in Boeing 

Special Attention Service Bulletin 777–25– 

0619, Revision 1, dated August 8, 2018, or 

Revision 2, dated January 27, 2023, terminate 

the applicable required actions of this AD, 

provided the terminating action is done in 

accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 777–25–0619, Revision 1, 

dated August 8, 2018, or Revision 2, dated 

January 27, 2023. 

(i) Exceptions to Service Information 

Specifications 

(1) Where Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 2, dated 

January 27, 2023, uses the phrase ‘‘the 

Original issue date of this service bulletin,’’ 

this AD requires replacing those words with 

‘‘October 8, 2019 (the effective date of AD 

2019–16–05).’’ 

(2) Where Boeing Special Attention Service 

Bulletin 777–25–0607, Revision 2, dated 

January 27, 2023, specifies compliance for 

certain actions ‘‘within 72 months after the 

Original Issue date of this service bulletin,’’ 

this AD requires replacing those words with 

‘‘within 36 months after October 8, 2019 (the 

effective date of AD 2019–16–05).’’ 

(3) Where Boeing Special Attention Service 

Bulletin 777–25–0607, Revision 2, dated 

January 27, 2023, specifies compliance for 

certain actions ‘‘within 36 months after the 

Revision 2 date of this service bulletin,’’ this 

AD requires compliance within 36 months 

after the effective date of this AD. 

(j) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, AIR–520, Continued 

Operational Safety 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 (k) of this AD. 

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 

Manager, AIR–520, Continued Operational 

Safety 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. 

(4) AMOCs approved for AD 2019–16–05 

are approved as AMOCs for the 

corresponding provisions of this AD. 

(5) For service information that contains 

steps that are labeled as Required for 

Compliance (RC), the provisions of 

paragraphs (j)(5)(i) and (ii) of this AD apply. 

(i) The steps labeled as RC, including 

substeps under an RC step and any figures 

identified in an RC step, must be done to 

comply with the AD. If a step or substep is 

labeled ‘‘RC Exempt,’’ then the RC 

requirement is removed from that step or 

substep. An AMOC is required for any 

deviations to RC steps, including substeps 

and identified figures. 

(ii) Steps not labeled as RC may be 

deviated from using accepted methods in 

accordance with the operator’s maintenance 

or inspection program without obtaining 

approval of an AMOC, provided the RC steps, 

including substeps and identified figures, can 

still be done as specified, and the airplane 

can be put back in an airworthy condition. 

(k) Related Information 

(1) For more information about this AD, 

contact Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th St., Des 

Moines, WA 98198; phone: 206–231–3986; 

email: courtney.k.tuck@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the addresses specified in 

paragraphs (l)(5) and (6) of this AD. 

(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. 


ddrumheller on DSK120RN23PROD with PROPOSALS1
66314 Federal Register / Vol. 88, No. 186 / Wednesday, September 27, 2023 / Proposed Rules 

(3) The following service information was 

approved for IBR on [DATE 35 DAYS AFTER 

PUBLICATION OF THE FINAL RULE]. 

(i) Boeing Special Attention Service 

Bulletin 777–25–0607, Revision 2, dated 

January 27, 2023. 

(ii) Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 2, dated 

January 27, 2023. 

(4) The following service information was 

approved for IBR on October 8, 2019 (84 FR 

45895, September 3, 2019). 

(i) Boeing Special Attention Service 

Bulletin 777–25–0619, Revision 1, dated 

August 8, 2018. 

(ii) [Reserved] 

(5) 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; website 

myboeingfleet.com. 

(6) 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. 

(7) 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: 

www.archives.gov/federal-register/cfr/ibrlocations.html. 

Issued on September 8, 2023. 

Caitlin Locke, 

Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–19797 Filed 9–26–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1888; Project 

Identifier MCAI–2023–00298–E] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Proposed rule; correction. 

SUMMARY: The FAA is correcting a 

Notice of Proposed Rulemaking (NPRM) 

that published in the Federal Register. 

The NPRM proposed to issue an 

airworthiness directive (AD) that would 

apply to all Rolls-Royce Deutschland 

Ltd & Co KG (RRD) Model RB211–Trent 

800 engines. As published, the docket 

number referenced throughout the 

NPRM is incorrect. This document 

corrects that error. In all other respects, 

the original document remains the 

same; however, for clarity, the FAA is 

republishing the entire proposed rule in 

the Federal Register. 

DATES: The last date for submitting 

comments to the NPRM (88 FR 63539, 

September 15, 2023) remains October 

30, 2023. 

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 

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. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1888; 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, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For service information identified 

in this NPRM, contact the European 

Union Aviation Safety Agency (EASA), 

Konrad-Adenauer-Ufer 3, 50668 

Cologne, Germany; phone: +49 221 8999 

000; email: ADs@easa.europa.eu; 

website: easa.europa.eu. You may find 

this material on the EASA website at 

ad.easa.europa.eu. It is also available at 

regulations.gov under Docket No. FAA– 

2023–1888. 

• You may view this service 

information at the FAA, Airworthiness 

Products Section, Operational Safety 

Branch, 1200 District Avenue, 

Burlington, MA 01803. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

FOR FURTHER INFORMATION CONTACT: 

Sungmo Cho, Aviation Safety Engineer, 

FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238– 

7241; email: sungmo.d.cho@faa.gov. 

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–2023–1888; Project Identifier 

MCAI–2023–00298–E’’ 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 

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 Sungmo Cho, Aviation 

Safety Engineer, FAA, 2200 South 216th 

Street, Des Moines, WA 98198. 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 issued an NPRM (88 FR 

63539, September 15, 2023) that would 

apply to all RRD Model RB211–Trent 

800 engines. The NPRM proposed to 

require initial and repetitive on-wing or 

in-shop borescope inspections (BSIs) of 

certain intermediate-pressure 

compressor (IPC) rotor shaft balance 

lands for cracks, dents, and nicks, and 

replacement of the IPC rotor shaft if 

necessary, and proposed to prohibit the 

installation of a certain IPC rotor shaft 

on any engine, as specified in EASA AD 

2023–0040, dated February 16, 2023 

(EASA AD 2023–0040) (also referred to 

after this as the MCAI), which is 

proposed for incorporation by reference. 


ddrumheller on DSK120RN23PROD with PROPOSALS1