73014 Federal Register / Vol. 89, No. 174 / Monday, September 9, 2024 / Proposed Rules 

(k) Credit for Previous Actions 

For Model CL–600–2B19 airplanes: This 

paragraph provides credit for the actions 

required by paragraph (h) of this AD, if those 

actions were performed before the effective 

date of this AD using the material in 

paragraphs (k)(1) through (4) of this AD, 

provided the electrical idents for coax cables 

are installed using Part G of the 

Accomplishment Instructions in MHI RJ 

Service Bulletin 601R–34–152, Revision D, 

dated May 11, 2023, within the compliance 

time specified in paragraph (h) of this AD. 

(1) MHI RJ Service Bulletin 601R–34–152, 

dated February 14, 2023. 

(2) MHI RJ Service Bulletin 601R–34–152, 

Revision A, dated February 28, 2023. 

(3) MHI RJ Service Bulletin 601R–34–152, 

Revision B, dated March 28, 2023. 

(4) MHI RJ Service Bulletin 601R–34–152, 

Revision C, dated April 20, 2023. 

(l) 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 manager of the International Validation 

Branch, mail it to the address identified in 

paragraph (m) of this AD. Information may be 

emailed to: 9-AVS-NYACO-COS@faa.gov. 

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, International Validation 

Branch, FAA; or Transport Canada; or MHI 

RJ Aviation ULC’s Transport Canada Design 

Approval Organization (DAO). If approved by 

the DAO, the approval must include the 

DAO-authorized signature. 

(m) Additional Information 

For more information about this AD, 

contact Steven Dzierzynski, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@faa.gov. 

(n) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference of 

the material listed in this paragraph under 5 

U.S.C. 552(a) and 1 CFR part 51. 

(2) You must use this material as 

applicable to do the actions required by this 

AD, unless this AD specifies otherwise. 

(i) MHI RJ Service Bulletin 601R–34–152, 

Revision D, dated May 11, 2023. 

(ii) MHI RJ Service Bulletin 670BA–34– 

054, dated February 20, 2023. 

(3) For MHI RJ material identified in this 

AD, contact MHI RJ Aviation Group, 

Customer Response Center, 3655 Ave. des 

Grandes-Tourelles, Suite 110, Boisbriand, 

Que ́bec J7H 0E2 Canada; North America tollfree telephone 833–990–7272 or direct-dial 

telephone 450–990–7272; fax 514–855–8501; 

email thd.crj@mhirj.com; website mhirj.com. 

(4) You may view this material 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 material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locationsoremailfr.inspection@nara.gov. 

Issued on August 28, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–20244 Filed 9–5–24; 11:15 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2137; Project 

Identifier AD–2023–00297–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) 

2019–22–02, which applies to all The 

Boeing Company Model 747–200B, 747– 

200C, 747–200F, 747–300, 747–400, 

747–400D, 747–400F, 747–8F, and 747– 

8 series airplanes. AD 2019–22–02 was 

prompted by reports of uncommanded 

fore and aft movement of the Captain’s 

and First Officer’s seats. AD 2019–22–02 

requires identifying the part number, 

and the serial number if applicable, of 

the Captain’s and First Officer’s seats, 

and applicable on-condition actions for 

affected seats. AD 2019–22–02 also 

requires a one-time detailed inspection 

and repetitive checks of the horizontal 

movement system (HMS) of the 

Captain’s and First Officer’s seats, and 

applicable on-condition actions. AD 

2019–22–02 also provides an optional 

terminating action for the repetitive 

actions for certain seats. Since the FAA 

issued AD 2019–22–02, the FAA has 

determined that additional seats are 

affected by the unsafe condition. This 

proposed AD would retain the actions 

required by AD 2019–22–02 and adds 

an inspection of 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 October 24, 

2024. 

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–2024–2137; 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: 

• For Boeing material identified in 

this proposed AD, contact Boeing 

Commercial Airplanes, Attention: 

Contractual & Data Services (C&DS), 

2600 Westminster Boulevard, MC 110– 

SK57, Seal Beach, CA 90740–5600; 

phone 562–797–1717; website 

myboeingfleet.com. 

• You may view this material at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 2200 South 

216th Street, 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 by 

searching for and locating Docket No. 

FAA–2024–2137. 

FOR FURTHER INFORMATION CONTACT: 

Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, 

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–2024–2137; Project Identifier AD– 

2023–00297–T’’ at the beginning of your 

comments. The most helpful comments 


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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 Courtney Tuck, 

Aviation Safety Engineer, FAA, 2200 

South 216th Street, 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 2019–22–02, 

Amendment 39–19781 (84 FR 67854, 

December 12, 2019) (AD 2019–22–02), 

for all The Boeing Company Model 747– 

200B, 747–200C, 747–200F, 747–300, 

747–400, 747–400D, 747–400F, 747–8F, 

and 747–8 series airplanes. AD 2019– 

22–02 was prompted by reports of 

uncommanded fore and aft movement of 

the Captain’s and First Officer’s seats. 

AD 2019–22–02 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. AD 

2019–22–02 also requires a one-time 

detailed inspection and repetitive 

checks of the HMS of the Captain’s and 

First Officer’s seats, and applicable oncondition actions. AD 2019–22–02 also 

provides an optional terminating action 

for the repetitive checks of the HMS for 

certain airplanes. The FAA issued AD 

2019–22–02 to address uncommanded 

fore and aft movement of the Captain’s 

and First Officer’s seats. An 

uncommanded fore or 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 2019–22–02 Was 

Issued 

Since the FAA issued AD 2019–22– 

02, Boeing and the seat supplier (Ipeco) 

determined that certain seat part 

numbers were inadvertently omitted 

from the service information required by 

AD 2019–22–02. Ipeco subsequently 

updated their service information to 

include the additional part numbers, 

and Boeing updated their service 

information as well. Based on this, the 

FAA has determined that additional 

seats are affected by the unsafe 

condition. 

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. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

The FAA reviewed Boeing Special 

Attention Service Bulletin 747–25– 

3644, Revision 2, dated January 27, 

2023. The material describes procedures 

for identification of the part number, 

and the serial number if applicable, of 

the Captain’s and First Officer’s seats, 

and applicable on-condition actions. 

On-condition actions include an 

inspection of each seat’s fore and aft and 

vertical manual control levers for 

looseness, installation of serviceable 

seats, and a seat operational test after 

any cable adjustment. This material also 

adds Ipeco seat part numbers 3A258– 

0041–01–1Z and 3A258–0042–01–1Z. 

The FAA also reviewed Boeing 

Special Attention Service Bulletin 747– 

25–3653, Revision 2, dated January 27, 

2023. This material describes 

procedures for a detailed inspection and 

repetitive checks of the HMS (including 

for any Artus part and amendment 

numbers of the horizontal actuator of 

the HMS) 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 HMS, and replacing the horizontal 

actuator. This material also describes 

procedures for an optional terminating 

action for the repetitive checks by 

installing a serviceable Captain’s or First 

Officer’s seat. 

This material is reasonably available 

because the interested parties have 

access to it through their normal course 

of business or by the means identified 

in ADDRESSES section. 

Proposed AD Requirements in This 

NPRM 

Although this proposed AD does not 

explicitly restate the requirements of AD 

2019–22–02, this proposed AD would 

retain all of the requirements of AD 

2019–22–02. 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 require 

accomplishing the actions specified in 

the service information already 

described, except for any differences 

identified as exceptions in the 

regulatory text of this proposed AD. For 

information on the procedures and 

compliance times, see this service 

information at regulations.gov under 

Docket No. FAA–2024–2137. 

Acceptable Methods of Compliance 

The FAA has determined that the 

actions required by paragraphs (g) and 

(h) of this AD are not required under 

specific conditions, e.g., if it can be 

shown through maintenance records 

that the required actions have already 

been accomplished by the previous 

revision of the service information and 

specific conditions have been met. 

Paragraph (j) of this AD identifies these 

conditions. Complying with these 

conditions adequately addresses the 

unsafe condition identified in this 

proposed AD. 

Costs of Compliance 

The FAA estimates that this AD, if 

adopted as proposed, would affect 162 

airplanes of U.S. registry. The FAA 

estimates the following costs to comply 

with this proposed AD: 


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73016 Federal Register / Vol. 89, No. 174 / Monday, September 9, 2024 / Proposed Rules 

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 2019-22– 

02).

1 work-hour × $85 per hour = 

$85.

$0 $85 ......................................... $27,540. 

Detailed inspection, HMS (retained actions from AD 

2019-22–02).

1 work-hour × $85 per hour = 

$85.

0 $85 ......................................... $27,540. 

Checks, HMS (retained actions from AD 2019–22–02).2 work-hours × $85 per hour 

= $170 per check cycle.

0 $170 per check cycle ............. $55,080 per check cycle. 

Identification, seat (new proposed actions).1 work-hour × $85 per hour = 

$85.

0 $85 ......................................... Up to $117,980. 

The FAA estimates the following 

costs to do any necessary on-condition 

actions that will be required. The FAA 

has no way of determining the number 

of aircraft that might need these oncondition actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS * 

Action Labor cost Parts cost Cost per product 

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

Overhaul, HMS .......................................... 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 per 

seat.

$0 ....................................... $85 per seat. 

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

seat.

$0 ....................................... $85 per seat. 

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

seat.

$0 ....................................... $85 per seat. 

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

actuator.

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

Operational test, adjusted control lever 

cable.

1 work-hour × $85 per hour = $85 per 

seat.

$0 ....................................... $85 per seat. 

* 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 received no definitive 

data that would enable the FAA to 

provide cost estimates for the optional 

terminating action for the repetitive 

checks specified in this proposed AD. 

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 

■ 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 

2019–22–02, Amendment 39–19781 (84 

FR 67854, December 12, 2019), and 

■ b. Adding the following new 

Airworthiness Directive: 

The Boeing Company: Docket No. FAA– 

2024–2137; Project Identifier AD–2023– 

00297–T. 

(a) Comments Due Date 

The FAA must receive comments on this 

airworthiness directive (AD) by October 24, 

2024. 

(b) Affected ADs 

This AD replaces AD 2019–22–02, 

Amendment 39–19781 (84 FR 67854, 

December 12, 2019) (AD 2019–22–02). 

(c) Applicability 

This AD applies to all The Boeing 

Company Model 747–200B, 747–200C, 747– 


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200F, 747–300, 747–400, 747–400D, 747– 

400F, 747–8F, and 747–8 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 and aft movement of the 

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

is issuing this AD to address uncommanded 

fore and aft movement of the Captain’s and 

First Officer’s seats. The unsafe condition, if 

not addressed, could result in an 

uncommanded fore or aft seat movement 

during a critical part of a flight, such as 

takeoff or landing, and 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 by paragraphs (i) and 

(j) of this AD: At the applicable times 

specified in the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Service Bulletin 

747–25–3644, 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 all 

applicable on-condition actions identified in, 

and in accordance with the Accomplishment 

Instructions of Boeing Special Attention 

Service Bulletin 747–25–3644, 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 by paragraph (i) and (j) 

of this AD: At the applicable times specified 

in the ‘‘Compliance’’ paragraph of Boeing 

Special Attention Bulletin 747–25–3653, 

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 

Bulletin 747–25–3653, Revision 2, dated 

January 27, 2023. Actions identified as 

terminating action in Boeing Special 

Attention Service Bulletin 747–25–3653, 

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 747–25–3653, Revision 2, 

dated January 27, 2023. 

(i) Exceptions to Service Information 

Specifications 

(1) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 747–25– 

3653, Revision 2, dated January 27, 2023, 

refers to the original issue date of this 

bulletin, this AD requires using January 16, 

2020 (the effective date of AD 2019–22–02). 

(2) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 747–25– 

3644, Revision 2, dated January 27, 2023, 

refers to 72 months after the original issue 

date of this service bulletin, this AD requires 

using 36 months after January 16, 2020 (the 

effective date of AD 2019–22–02). 

(3) Where the ‘‘Compliance’’ paragraph of 

Boeing Special Attention Bulletin 747–25– 

3644, Revision 2, dated January 27, 2023, 

refers to the Revision 2 date of this service 

bulletin, this AD requires using the effective 

date of the AD. 

(j) Acceptable Conditions for Compliance 

If the airplane records show that an Ipeco 

Captain’s or First Officer’s seat meets all 

criteria specified in any row in figure 1 to 

paragraph (j) of this AD, the actions specified 

in paragraphs (g) and (h) of this AD are not 

required for that seat. 

Figure 1 to Paragraph (j)—Alternative 

Acceptable Seats 

BILLING CODE 4910–13–P 


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ddrumheller on DSK120RN23PROD with PROPOSALS1EP09SE24.000</GPH>

Installation per Boeing And installation per 

Special Attention lpeco Service Bulletin Having lpeco P/N - And additional required conditions -

Service Bulletin - -

747-25-3644, Revision 1, None 3A258-0041-01-2 or No additional conditions required. dated July 17, 2018 3A258-0042-01-2 

The manual override cable maintenance 

097-25-02, Issue 1, has been completed on the seat in 

747-25-3644, Revision 1, dated October 2, 2013; 3A090-0027-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 or Issue 2, dated March 3A090-0028-01-1 Maintenance Manual 25-10-94, Revision 

28, 2014; or Issue 3, 1 o, dated September 13, 2019, or 

dated March 4, 2020 subsequent revisions up to and including 

Revision 15, dated August 1 O, 2021. 

The manual override cable maintenance 

107-25-03, Issue 1, has been completed on the seat in 

747-25-3644, Revision 1, dated October 2, 2013; 3A090-0055-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 or Issue 2, dated March 3A090-0056-01-1 Maintenance Manual 25-10-97, Revision 

28, 2014; or Issue 3, 14, dated December 5, 2013, and 

dated March 4, 2020 subsequent revisions up to and including 

Revision 22, dated March 19, 2021. 

112-25-02, Issue 1, The manual override cable maintenance 

dated November 4, has been completed on the seat in 

747-25-3644, Revision 1, 2013; or Issue 2, dated 3A090-0065-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 March 28, 2014; or 3A090-0066-01-1 Maintenance Manual 25-11-01, Revision 

Issue 3, dated March 9, dated September 20, 2013, and 

18, 2020; or Issue 4, subsequent revisions up to and including 

dated May 7, 2021 Revision 18, dated December 19, 2021. 

209-25-02, Issue 1, The manual override cable maintenance 

dated November 13, has been completed on the seat in 

747-25-3644, Revision 1, 2013; or Issue 2, dated 3A090-0075-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 March 28, 2014; or 3A090-0076-01-1 Maintenance Manual 25-11-32, Revision 

4, dated September 27, 2013, and Issue 3, dated March 4, subsequent revisions up to and including 2020 Revision 9, dated July 23, 2020. 

211-25-04, Issue 1, The manual override cable maintenance 

dated November 4, has been completed on the seat in 

747-25-3644, Revision 1, 2013; or Issue 2, dated 3A090-0079-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 March 28, 2014; or 3A090-0080-01-1 Maintenance Manual 25-10-79, Revision 

23, dated September 5, 2013, and Issue 3, dated March 4, subsequent revisions up to and including 2020 Revision 31, dated July 23, 2020. 
Federal Register / Vol. 89, No. 174 / Monday, September 9, 2024 / Proposed Rules 73019 

BILLING CODE 4910–13–C 

(k) 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 (m) of this AD. 

Information may be emailed to: AMOC@

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. 


ddrumheller on DSK120RN23PROD with PROPOSALS1EP09SE24.001</GPH>

Installation per Boeing And installation per 

Special Attention lpeco Service Bulletin Having lpeco P/N - And additional required conditions -

Service Bulletin - -

212-25-03, Issue 1, The manual override cable maintenance 

dated November 4, has been completed on the seat in 

747-25-3644, Revision 1, 2013; or Issue 2, dated 3A090-0081-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 March 28, 2014; or 3A090-0082-01-1 Maintenance Manual 25-10-80, Revision 

Issue 3, dated March 4, 9, dated September 27, 2013, and 

2020 subsequent revisions up to and including 

Revision 15, dated July 23, 2020. 

258-25-08, Issue 5, 

747-25-3644, Revision 1, dated March 4, 2020; or 3A258-0041-01-1 or 

Does not have a serial number identified 

dated July 17, 2018 Issue 6, dated January 3A258-0042-01-1 by the effectivity of the referenced I peco 

28,2021 Service Bulletins. 

The manual override cable maintenance 

258-25-08, Issue 5, has been completed on the seat in 

747-25-3644, Revision 1, dated March 4, 2020; or 3A258-0041-01-1 or 

accordance with the lpeco Component 

dated July 17, 2018 Issue 6, dated January 3A258-0042-01-1 Maintenance Manual 25-11-38, Revision 

28,2021 21, dated December 12, 2013, or 

subsequent revisions up to and including 

Revision 53, dated December 4, 2023. 

747-25-3644, Revision 1, 258-25-08, Issue 6, 3A258-0041-01-12 Does not have a serial number identified 

dated July 17, 2018 dated January 28, 2021 or 3A258-0042-01- by the effectivity of the referenced I peco 

12 Service Bulletin. 

The manual override cable maintenance 

has been completed on the seat in 

747-25-3644, Revision 1, 258-25-08, Issue 6, 3A258-0041-01-12 accordance with the lpeco Component 

dated July 17, 2018 dated January 28, 2021 or 3A258-0042-01 - Maintenance Manual 25-11-38, Revision 

12 21, dated December 12, 2013, or 

subsequent revisions up to and including 

Revision 53, dated December 4, 2023. 

3A258-0041-01-2, 

747-25-3653, Revision 1, None 3A258-0041-01-12, 

dated October 18, 2018 3A258-0042-01-2 or 

No additional conditions required. 

3A258-0042-01-12 

258-25-13, Issue 3, 

dated November 27, 

747-25-3653, Revision 1, 2017; or Issue 4, dated 3A258-0041-01-1 or 

Has a horizontal actuator with Artus part 

dated October 18, 2018 April 28, 2020, or Issue 3A258-0042-01 -1 number AD8650503 at "Amendment C" 

5; dated November 1, or later. 

2021 

258-25-14, Issue 4, 

747-25-3653, Revision 1, dated January 29, 2018; 3A258-0041-01-1 or 

Has a horizontal actuator with Artus part 

dated October 18, 2018 or Issue 5, dated April 3A258-0042-01-1 number AD8650503 at "Amendment C" 

28,2020 or later. 
73020 Federal Register / Vol. 89, No. 174 / Monday, September 9, 2024 / Proposed Rules 

(4) AMOCs approved for AD 2019–22–02 

are approved as AMOCs for the 

corresponding provisions of Boeing Special 

Attention Service Bulletin 747–25–3644, 

Revision 2, dated January 27, 2023, and 

Boeing Special Attention Service Bulletin 

747–25–3653, Revision 2, dated January 27, 

2023, that are required by paragraphs (g) and 

(h) of this AD. 

(5) For service information that contains 

steps that are labeled as Required for 

Compliance (RC), the provisions of 

paragraphs (k)(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. 

(l) Related Information 

For more information about this AD, 

contact Courtney Tuck, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

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

email Courtney.K.Tuck@faa.gov. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the material listed in this paragraph 

under 5 U.S.C. 552(a) and 1 CFR part 51. 

(2) You must use this material as 

applicable to do the actions required by this 

AD, unless the AD specifies otherwise. 

(i) Boeing Special Attention Service 

Bulletin 747–25–3644, Revision 2, dated 

January 27, 2023. 

(ii) Boeing Special Attention Service 

Bulletin 747–25–3653, Revision 2, dated 

January 27, 2023. 

(3) For Boeing material identified in this 

AD, contact Boeing Commercial Airplanes, 

Attention: Contractual & Data Services 

(C&DS), 2600 Westminster Boulevard, MC 

110–SK57, Seal Beach, CA 90740–5600; 

phone 562–797–1717; website 

myboeingfleet.com. 

(4) You may view this material at the FAA, 

Airworthiness Products Section, Operational 

Safety Branch, 2200 South 216th Street, Des 

Moines, WA. For information on the 

availability of this material at the FAA, call 

206–231–3195. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

ibr-locations or email fr.inspection@nara.gov. 

Issued on August 26, 2024. 

Suzanne Masterson, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–20159 Filed 9–6–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 71 

[Docket No. FAA–2023–1477; Airspace 

Docket No. 19–ANM–27] 

RIN 2120–AA66 

Modification of Class D Airspace; 

Revocation of Class E Airspace; 

Centennial Airport, Denver, CO 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: This action proposes to 

modify Class D airspace and revoke 

Class E airspace designated as an 

extension to a Class D or Class E surface 

area at Centennial Airport (APA), 

Denver, CO. Additionally, this action 

would amend administrative texts with 

Centennial Airport’s legal description. 

This action would support instrument 

flight rules (IFR) and visual flight rules 

(VFR) operations at the airport. 

DATES: Comments must be received on 

or before October 24, 2024. 

ADDRESSES: Send comments identified 

by FAA Docket No. FAA–2023–1477 

and Airspace Docket No. 19–ANM–27 

using any of the following methods: 

* Federal eRulemaking Portal: Go to 

www.regulations.gov and follow the 

online instructions for sending your 

comments electronically. 

* Mail: Send comments to Docket 

Operations, M–30; U.S. Department of 

Transportation, 1200 New Jersey 

Avenue SE, Room W12–140, West 

Building Ground Floor, Washington, DC 

20590–0001. 

* Hand Delivery or Courier: Take 

comments to Docket Operations in 

Room W12–140 of the West Building 

Ground Floor at 1200 New Jersey 

Avenue SE, Washington, DC, between 9 

a.m. and 5 p.m., Monday through 

Friday, except Federal holidays. 

* Fax: Fax comments to Docket 

Operations at (202) 493–2251. 

Docket: Background documents or 

comments received may be read at 

www.regulations.gov at any time. 

Follow the online instructions for 

accessing the docket or go to the Docket 

Operations in Room W12–140 of the 

West Building Ground Floor at 1200 

New Jersey Avenue SE, Washington, 

DC, between 9 a.m. and 5 p.m., Monday 

through Friday, except Federal holidays. 

FAA Order JO 7400.11H, Airspace 

Designations and Reporting Points, and 

subsequent amendments can be viewed 

online at www.faa.gov/air_traffic/ 

publications/. You may also contact the 

Rules and Regulations Group, Office of 

Policy, Federal Aviation 

Administration, 800 Independence 

Avenue SW, Washington, DC 20591; 

telephone: (202) 267–8783. 

FOR FURTHER INFORMATION CONTACT: 

Keith T. Adams, Federal Aviation 

Administration, Western Service Center, 

Operations Support Group, 2200 S 

216th Street, Des Moines, WA 98198; 

telephone (206) 231–2428. 

SUPPLEMENTARY INFORMATION: 

Authority for This Rulemaking 

The FAA’s authority to issue rules 

regarding aviation safety is found in 

Title 49 of the United States Code. 

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. This rulemaking is 

promulgated under the authority 

described in Subtitle VII, Part A, 

Subpart I, Section 40103. Under that 

section, the FAA is charged with 

prescribing regulations to assign the use 

of the airspace necessary to ensure the 

safety of aircraft and the efficient use of 

airspace. This regulation is within the 

scope of that authority as it would 

modify Class D airspace and revoke 

Class E airspace designated as an 

extension to a Class D or Class E surface 

area to support IFR and VFR operations 

at Centennial Airport, Denver, CO. 

Comments Invited 

The FAA invites interested persons to 

participate in this rulemaking by 

submitting written comments, data, or 

views. Comments are specifically 

invited on the overall regulatory, 

aeronautical, economic, environmental, 

and energy-related aspects of the 

proposal. The most helpful comments 

reference a specific portion of the 

proposal, explain the reason for any 

recommended change, and include 

supporting data. To ensure the docket 

does not contain duplicate comments, 

commenters should submit only one 

time if comments are filed 

electronically, or commenters should 

send only one copy of written 

comments if comments are filed in 

writing. 

The FAA will file in the docket all 

comments it receives, as well as a report 


ddrumheller on DSK120RN23PROD with PROPOSALS1