95092 Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 

(b) Affected ADs 

This AD replaces AD 2023–24–06, 

Amendment 39–22623 (88 FR 89290, 

December 27, 2023). 

(c) Applicability 

This AD applies to Rolls-Royce 

Deutschland Ltd & Co KG Model Trent 1000– 

AE3, Trent 1000–CE3, Trent 1000–D3, Trent 

1000–G3, Trent 1000–H3, Trent 1000–J3, 

Trent 1000–K3, Trent 1000–L3, Trent 1000– 

M3, Trent 1000–N3, Trent 1000–P3, Trent 

1000–Q3, and Trent 1000–R3 engines. 

(d) Subject 

Joint Aircraft System Component (JASC) 

Code 7200, Engine (Turbine/Turboprop). 

(e) Unsafe Condition 

This AD was prompted by the 

manufacturer revising the engine time limits 

manual (TLM) required maintenance and 

inspections. The FAA is issuing this AD to 

prevent the failure of rotating parts. The 

unsafe condition, if not addressed, could 

result in failure of one or more engines, loss 

of thrust control, and loss of the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified in paragraph (h) of this 

AD: Perform all required actions within the 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency AD 2023–0195, dated 

November 9, 2023 (EASA AD 2023–0195). 

(h) Exceptions to EASA AD 2023–0195 

(1) Where EASA AD 2023–0195 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(2) This AD does not require compliance 

with paragraph (1), (2), (4), and (5) of EASA 

AD 2023–0195. 

(3) Where paragraph (3) of EASA AD 2023– 

0195 specifies ‘‘Within 12 months after the 

effective date of this AD, revise the approved 

AMP,’’ replace that text with ‘‘Within 30 

days after the effective date of this AD, revise 

the airworthiness limitation section (ALS) of 

the existing approved engine maintenance or 

inspection program, as applicable.’’ 

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

paragraph of EASA AD 2023–0195. 

(i) Provisions for Alternative Actions and 

Intervals 

No alternative actions and associated 

thresholds and intervals, including life 

limits, are allowed for compliance with 

paragraph (g) of this AD unless they are 

approved as specified in the provisions of the 

‘‘Ref. Publications’’ section of EASA AD 

2023–0195. 

(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 local Flight Standards District Office, as 

appropriate. If sending information directly 

to the Manager, AIR–520 Continued 

Operational Safety Branch, send it to the 

attention of the person identified in 

paragraph (k) of this AD and email to: 

AMOC@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. 

(k) Additional Information 

For more information about this AD, 

contact Barbara Caufield, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; phone: (781) 238–7146; 

email: barbara.caufield@faa.gov. 

(l) 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) European Union Aviation Safety Agency 

(EASA) AD 2023–0195, dated November 9, 

2023. 

(ii) [Reserved] 

(3) For EASA material identified in this 

AD, contact 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 

EASA AD on the EASA website at 

ad.easa.europa.eu. 

(4) You may view this material at 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. 

(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 October 15, 2024. 

Peter A. White, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–28088 Filed 11–29–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–0463; Project 

Identifier AD–2023–00792–T; Amendment 

39–22890; AD 2024–23–11] 

RIN 2120–AA64 

Airworthiness Directives; The Boeing 

Company Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

The Boeing Company Model 737–8, 

737–9, and 737–8200 (737 MAX) 

airplanes. This AD was prompted by a 

report of a non-conforming installation 

of spoiler wire bundles that led to 

unintended spoiler motion, including 

one instance of a flight spoiler hardover. 

Further investigation identified the 

potential for a hardover of more than 

one flight spoiler on the same wing, 

which can exceed full lateral control 

capability leading to loss of control of 

the airplane. This AD requires a onetime inspection of the clearance 

between the spoiler control wire 

bundles and the adjacent structure, and 

applicable on-condition actions. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective January 6, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of January 6, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–0463; or in person at 

Docket Operations between 9 a.m. and 

5 p.m., Monday through Friday, except 

Federal holidays. The AD docket 

contains this final rule, any comments 

received, and other information. The 

address for Docket Operations is U.S. 

Department of Transportation, Docket 

Operations, M–30, West Building 

Ground Floor, Room W12–140, 1200 

New Jersey Avenue SE, Washington, DC 

20590. 

Material Incorporated by Reference: 

• For Boeing material 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. 

• You may view this material at the 

FAA, Airworthiness Products Section, 


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Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 95093 

1The Foundation’s comment on this AD was 

submitted directly to the FAA Administrator, but 

has been placed into the rulemaking docket. 

2An ‘‘Immediately Adopted Rule’’ or ‘‘IAR’’ is an 

FAA term for a rule that is issued without first 

obtaining public comment, a.k.a a ‘‘Final Rule with 

request for Comments,’’ based upon good cause. 

3Although the work-hours listed in the NPRM for 

the one-time inspection and on-condition actions 

amount to nine hours of work per airplane, no 

airplane would require all of the on-condition 

actions. Therefore, the actions required by this AD 

would take less than nine hours of work per 

airplane. 

4This type of flight spoiler failure will be 

detected within a short time window by a software 

monitor, which will then fully retract spoiler 

eliminating the hardover condition, thereby 

limiting the exposure window for concurrent 

failures. 

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–2024–0463. 

FOR FURTHER INFORMATION CONTACT: 

Michael Closson, Aviation Safety 

Engineer, FAA, 2200 South 216th St., 

Des Moines, WA 98198; phone: 206– 

231–3973; email: Michael.P.Closson@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain The Boeing Company 

Model 737–8, 737–9, and 737–8200 

airplanes. The NPRM published in the 

Federal Register on March 11, 2024 (89 

FR 17346). The NPRM was prompted by 

a report of a non-conforming installation 

of flight spoiler control wire bundles 

that led to unintended spoiler motion, 

including one instance of flight spoiler 

hardover. Further investigation 

identified the potential for simultaneous 

time-limited hardovers of more than one 

flight spoiler on the same wing, which 

can exceed full lateral control capability 

leading to loss of control of the airplane. 

In the NPRM, the FAA proposed to 

require a one-time inspection of the 

clearance between the spoiler control 

wire bundles and the adjacent structure, 

and applicable on-condition actions. 

The FAA is issuing this AD to address 

the potential for improper clearance 

between the spoiler control wire 

bundles and the adjacent structure. 

Improper clearance can lead to damage 

to the wire bundle, causing 

unintentional spoiler motion and 

consequent loss of control of the 

airplane. A hardover of more than one 

flight spoiler on the same wing can 

exceed full lateral control capability 

leading to loss of control of the airplane. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

seven commenters: The Boeing 

Company, United Airlines, Air Line 

Pilots Association, International, and 

four individuals, who supported the 

NPRM without change. 

The FAA received additional 

comments from three commenters: 

SunExpress Airlines, The Foundation 

for Aviation Safety, and an individual. 

The following summarizes the 

comments received on the NPRM and 

provides the FAA’s responses. 

Request for Immediately Adopted Rule 

(IAR) 

The Foundation for Aviation Safety 

(the Foundation) requested 1 that the 

FAA issue the AD as an immediately 

adopted rule (IAR) 2 with a compliance 

time of 30 days instead of the proposed 

36-month compliance time. The 

Foundation’s rationale referenced the 

service history of this model, the FAA’s 

use of what the Foundation described as 

an unvalidated assumption about wear 

rates, the presence of a potentially 

catastrophic single failure condition, 

and the required inspection is estimated 

to take nine hours 3 per airplane. 

In addition, an individual requested 

the FAA require ‘‘immediate repair of 

the defects on the identified aircraft’’ 

due to recent Boeing failures. 

The FAA does not agree with the 

request to issue the AD as an IAR, or to 

shorten the compliance time. After 

conducting a risk analysis, the FAA did 

not find it necessary to issue an IAR 

with a shorter compliance time, but 

determined that an NPRM, which 

allowed the opportunity for public 

comment, was appropriate. 

As part of their argument for an IAR 

and shortened compliance time, the 

Foundation stated that the potential 

failure condition is the result of a single 

point of failure (the chafed wire to a 

spoiler actuator), which is incorrect. 

The NPRM was issued to address the 

potential catastrophic event of 

simultaneous time-limited 4 hardovers 

of more than one flight spoiler on the 

same wing, which would require two 

separate specific wires to short to 

ground almost simultaneously. 

To support their argument for the 

IAR, the Foundation also questioned the 

FAA’s assumptions regarding the use of 

unvalidated wire ‘‘wear rates’’ to 

support the compliance times in the 

NPRM. The FAA concurs that ‘‘wear 

rate’’ is highly dependent upon the 

specific installation and operational 

environment of the wire bundle in 

question. However, the FAA did not use 

Boeing’s ‘‘wear rate’’ in developing the 

risk analysis as suggested by the 

commenter. Instead, the FAA’s analysis 

incorporated feedback from 737 MAX 

operators that had performed the 

inspections called out in Boeing Service 

Letter 737–SL–293–A, dated May 17, 

2022, which indicated no findings of 

wire chafing in over 650 Model 737 

MAX airplanes. This, combined with 

the FAA risk analysis, showed that an 

NPRM was appropriate. 

Request for Credit for Prior Inspections 

SunExpress Airlines requested that 

Boeing Service Letter 737–SL–27–293– 

B, dated May 23, 2022, serve as 

alternative method of compliance to 

paragraphs (g) and (h) of the proposed 

AD. The commenter asserted that the 

Work Instructions of Boeing Service 

Letter 737–SL–27–293–B fulfills the 

requirements stated in Boeing Alert 

Requirements Bulletin 737–27A1325 

RB, dated July 14, 2023 (Alert RB 737– 

27A1325 RB). 

The FAA agrees that accomplishing 

Boeing Service Letter 737–SL–27–293– 

B, dated May 23, 2022, provides some 

of the inspection and corrective action 

instructions called out in Alert RB 737– 

27A1325 RB. However, the FAA 

disagrees with giving credit for 

paragraphs (g) and (h) of this AD 

because the scope of the inspections in 

Boeing Service Letter 737–SL–27–293– 

B, dated May 23, 2022, does not include 

inspections for the outboard clamp 

locations and does not have certain of 

the defined clearance requirements of 

the Requirements Bulletin. Paragraph (i) 

of this AD allows the commenter to 

request an alternative method of 

compliance (AMOC) for the actions in 

the Service Letter that are duplicated in 

the Requirements Bulletin. 

Request for Additional Guidance To 

Identify Affected Airplanes 

An individual requested that the FAA 

issue additional guidance to assist in 

identifying other airplane models that 

may be subject to the same unsafe 

condition. 

Such additional guidance is 

unnecessary. The FAA has worked with 

Boeing to identify the affected airplanes 

and those airplanes have been listed in 

Alert RB 737–27A1325 RB. The agency 

has also verified with Boeing that the 

actions and practices identified in Alert 

RB 737–27A1325 RB have been 

incorporated in Boeing’s production 

processes at a specific airplane line 

number, ensuring this unsafe condition 

does not exist on airplanes delivered 

from that line number forward. 


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95094 Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 

Conclusion 

The FAA reviewed the relevant data, 

considered any comments received, and 

determined that air safety requires 

adopting this AD as proposed. 

Accordingly, the FAA is issuing this AD 

to address the unsafe condition on these 

products. Except for minor editorial 

changes, this AD is adopted as proposed 

in the NPRM. None of the changes will 

increase the economic burden on any 

operator. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

The FAA reviewed Boeing Alert 

Requirements Bulletin 737–27A1325 

RB, dated July 14, 2023. This material 

specifies procedures for spoiler control 

wire bundles clearance measurement 

and applicable on-condition actions. 

On-condition actions include a detailed 

inspection of the spoiler control wire 

bundles and adjacent structure for 

chafing damage, repair of any spoiler 

control wire bundles and any structural 

damage, and adjustment of the spoiler 

control wire bundles to ensure clearance 

requirements are met. 

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 the ADDRESSES section. 

Costs of Compliance 

The FAA estimates that this AD 

affects 207 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Measurement of wire bundle clearance ......... 1 work-hour × $85 per hour = $85 ................. $0 $85 $17,595 

The FAA estimates the following 

costs to do any necessary repairs that 

would be required based on the results 

of the inspection. The agency has no 

way of determining the number of 

aircraft that might need these repairs: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Inspection ....................................................................................... 1 work-hour × $85 ....................................... $0 $85 

Rework cable bundles without chafing damage to wires or airplane structure.2 work-hours × $85 per hour = $170 .......... 0 170 

Rework cable bundles with chafing damage to wires or airplane 

structure.

5 work-hours × $85 per hour = $425 .......... 0 425 

The FAA has included all known 

costs in its cost estimate. According to 

the manufacturer, however, some or all 

of the costs of this AD may be covered 

under warranty, thereby reducing the 

cost impact on affected operators. 

Authority for This Rulemaking 

Title 49 of the United States Code 

specifies the FAA’s authority to issue 

rules on aviation safety. Subtitle I, 

section 106, describes the authority of 

the FAA Administrator. Subtitle VII: 

Aviation Programs, describes in more 

detail the scope of the Agency’s 

authority. 

The FAA is issuing this rulemaking 

under the authority described in 

Subtitle VII, Part A, Subpart III, Section 

44701: General requirements. Under 

that section, Congress charges the FAA 

with promoting safe flight of civil 

aircraft in air commerce by prescribing 

regulations for practices, methods, and 

procedures the Administrator finds 

necessary for safety in air commerce. 

This regulation is within the scope of 

that authority because it addresses an 

unsafe condition that is likely to exist or 

develop on products identified in this 

rulemaking action. 

Regulatory Findings 

This AD will not have federalism 

implications under Executive Order 

13132. This AD will not have a 

substantial direct effect on the States, on 

the relationship between the national 

government and the States, or on the 

distribution of power and 

responsibilities among the various 

levels of government. 

For the reasons discussed above, I 

certify that this AD: 

(1) Is not a ‘‘significant regulatory 

action’’ under Executive Order 12866, 

(2) Will not affect intrastate aviation 

in Alaska, and 

(3) Will not have a significant 

economic impact, positive or negative, 

on a substantial number of small entities 

under the criteria of the Regulatory 

Flexibility Act. 

List of Subjects in 14 CFR Part 39 

Air transportation, Aircraft, Aviation 

safety, Incorporation by reference, 

Safety. 

The Amendment 

Accordingly, under the authority 

delegated to me by the Administrator, 

the FAA amends 14 CFR part 39 as 

follows: 

PART 39—AIRWORTHINESS 

DIRECTIVES 

■ 1. The authority citation for part 39 

continues to read as follows: 

Authority: 49 U.S.C. 106(g), 40113, 44701. 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2024–23–11 The Boeing Company: 

Amendment 39–22890; Docket No. 

FAA–2024–0463; Project Identifier AD– 

2023–00792–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective January 6, 2025. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 737–8, 737–9, and 737–8200 

airplanes, certificated in any category, as 

identified in Boeing Alert Requirements 

Bulletin 737–27A1325 RB, dated July 14, 

2023. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight controls. 


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Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 95095 

(e) Unsafe Condition 

This AD was prompted by a report of a 

non-conforming installation of spoiler wire 

bundles that led to unintended spoiler 

motion, including one instance of a flight 

spoiler hardover. Further investigation 

identified the potential for a time-limited 

hardover of more than one flight spoiler on 

the same wing, which can exceed full lateral 

control capability leading to loss of control 

of the airplane. The FAA is issuing this AD 

to address improper clearance between the 

spoiler control wire bundles and the adjacent 

structure, which can lead to damage to the 

wire bundle, causing unintentional spoiler 

motion. The unsafe condition, if not 

addressed, could result in loss of control of 

the airplane. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Required Actions 

Except as specified by paragraph (h) of this 

AD: At the applicable times specified in the 

‘‘Compliance’’ paragraph of Boeing Alert 

Requirements Bulletin 737–27A1325 RB, 

dated July 14, 2023, do all applicable actions 

identified in, and in accordance with, the 

Accomplishment Instructions of Boeing Alert 

Requirements Bulletin 737–27A1325 RB, 

dated July 14, 2023. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin 737–27A1325, dated July 14, 2023, 

which is referred to in Boeing Alert 

Requirements Bulletin 737–27A1325 RB, 

dated July 14, 2023. 

(h) Exception to Service Information 

Specifications 

Where the Compliance Time columns of 

the tables in the ‘‘Compliance’’ paragraph of 

Boeing Alert Requirements Bulletin 737– 

27A1325 RB, dated July 14, 2023, use the 

phrase ‘‘the original issue date of 

Requirements Bulletin 737–27A1325 RB,’’ 

this AD requires using the effective date of 

this AD. 

(i) 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 (j)(1) 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. 

(j) Related Information 

(1) For more information about this AD, 

contact Michael Closson, Aviation Safety 

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

Moines, WA 98198; phone: 206–231–3973; 

email: Michael.P.Closson@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the address specified in 

paragraph (k)(3) of this AD. 

(k) 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 Alert Requirements Bulletin 

737–27A1325 RB, dated July 14, 2023. 

(ii) [Reserved] 

(3) For Boeing material 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. 

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

Issued on November 14, 2024. 

John P. Piccola, Jr., 

Director, Integrated Certificate Management 

Division, Aircraft Certification Service. 

[FR Doc. 2024–28120 Filed 11–29–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2015; Project 

Identifier MCAI–2023–00769–T; Amendment 

39–22887; AD 2024–23–08] 

RIN 2120–AA64 

Airworthiness Directives; Bombardier, 

Inc., Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Bombardier, Inc., Model BD–700–1A10 

and BD–700–1A11 airplanes. This AD 

was prompted by reports of missing or 

damaged inboard flap seal plate 

assemblies. This AD requires repetitive 

inspections for cracks of the attaching 

angles of the inboard flap seal plates 

and replacement. The FAA is issuing 

this AD to address the unsafe condition 

on these products. 

DATES: This AD is effective January 6, 

2025. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of January 6, 2025. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2015; 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 mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

Material Incorporated by Reference: 

• For Bombardier material identified 

in this AD, contact Bombardier Business 

Aircraft Customer Response Center, 400 

Coˆte-Vertu Road West, Dorval, Que ́bec 

H4S 1Y9, Canada; telephone 514–855– 

2999; email ac.yul@

aero.bombardier.com; website 

bombardier.com. 

• 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. 

It is also available at regulations.gov 

under Docket No. FAA–2024–2015. 

FOR FURTHER INFORMATION CONTACT: 

Yaser Osman, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516– 

228–7300; email 9-avs-nyaco-cos@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 by adding an AD that would 

apply to certain Bombardier, Inc., Model 

BD–700–1A10 and BD–700–1A11 

airplanes. The NPRM published in the 


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