95086 Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 

E. For a loan amount less than $16,855: 8 

percent of the total loan amount. 

* * * * * 

Brian Shearer, 

Assistant Director, Office of Policy Planning 

and Strategy, Consumer Financial Protection 

Bureau. 

[FR Doc. 2024–27553 Filed 11–29–24; 8:45 am] 

BILLING CODE 4810–AM–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–1897; Project 

Identifier AD–2023–00774–T; Amendment 

39–22882; AD 2024–23–03] 

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 737–300 

and –400 series airplanes. This AD was 

prompted by a report that flight control 

rigging tolerances could result in spoiler 

deflection not reaching the minimal 

level required to engage the cruise 

thrust split monitor (MONFD) used by 

the autothrottle (A/T) system. This AD 

requires changing certain wire bundles, 

installing a new housing assembly, 

removing the mechanical aileron force 

limiter (MAFL), doing an inspection or 

records check to determine if certain 

flight control computers (FCCs) are 

installed, and performing applicable oncondition 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–2024–1897; 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, 

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–2024–1897. 

FOR FURTHER INFORMATION CONTACT: Eric 

Igama, Aviation Safety Engineer, FAA, 

2200 South 216th Street, Des Moines, 

WA 98198; telephone 562–627–5388; 

email roderick.igama@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 737–300 and –400 series 

airplanes. The NPRM published in the 

Federal Register on July 29, 2024 (89 FR 

60836). The NPRM was prompted by a 

report indicating that flight control 

rigging tolerances could result in spoiler 

deflection not reaching the minimal 

level required to engage the MONFD 

used by the A/T system. In the NPRM, 

the FAA proposed to require changing 

certain wire bundles, installing a new 

housing assembly, removing the 

mechanical aileron force limiter 

(MAFL), doing an inspection or records 

check to determine if certain flight 

control computers (FCCs) are installed, 

and performing applicable on-condition 

actions. The FAA is issuing this AD to 

address failure of the spoiler deflection 

to engage the MONFD, which could lead 

to significant throttle split, leading to 

asymmetric thrust and the subsequent 

lack of autothrottle disengagement, 

uncommanded roll, and consequent loss 

of control of the airplane and reduced 

ability of the flightcrew to maintain the 

safe flight and landing of the airplane. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received a comment from 

Aviation Partners Boeing. The following 

presents the comment received on the 

NPRM and the FAA’s response. 

Effect of Winglets on Accomplishment 

of the Proposed Actions 

Aviation Partners Boeing stated that 

the installation of winglets per 

Supplemental Type Certificate (STC) 

ST01219SE does not affect compliance 

with the proposed actions. 

The FAA agrees with the commenter 

that STC ST01219SE does not affect the 

accomplishment of the manufacturer’s 

service instructions. Therefore, the 

installation of STC ST01219SE does not 

affect the ability to accomplish the 

actions required by this AD. The FAA 

has not changed this AD in this regard. 

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 737–22A1399 

RB, dated April 13, 2023. This material 

specifies procedures for changing 

certain wire bundles, installing a new 

housing assembly, removing the MAFL, 

doing an inspection or records check to 

determine if certain FCCs are installed 

(FCCs that have an electronic aileron 

limiter (EAL) revision), and performing 

applicable on-condition actions. Oncondition actions include installing new 

FCCs or re-installing kept FCCs (the 

installation includes doing specified 

tests and applicable corrective actions 

until the tests are passed). 

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 110 airplanes of U.S. registry. 

The FAA estimates the following costs 

to comply with this AD: 


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Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 95087 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Wire bundle change, MAFL removal, housing assembly installation, and inspection/records review.Up to 10 work-hours × $85 per 

hour = up to $850.

$0 Up to $850 .......... Up to $93,500. 

The FAA estimates the following 

costs to do any on-condition actions that 

would be required based on the results 

of the inspection/records review. The 

agency has no way of determining the 

number of aircraft that might need these 

on-condition actions: 

ON-CONDITION COSTS

Action Labor cost Parts cost Cost per 

product 

Installation of FCCs ...................................................... 2 work-hours × $85 per hour = $170 ........................... $7,250 $7,420 

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: 

2024–23–03 The Boeing Company: 

Amendment 39–22882; Docket No. 

FAA–2024–1897; Project Identifier AD– 

2023–00774–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 737–300 and –400 series airplanes, 

certificated in any category, as identified in 

Boeing Alert Requirements Bulletin 737– 

22A1399 RB, dated April 13, 2023. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 27, Flight controls. 

(e) Unsafe Condition 

This AD was prompted by a report that 

flight control rigging tolerances could result 

in spoiler deflection not reaching the 

minimal level required to engage the cruise 

thrust split monitor (MONFD) used by the 

autothrottle (A/T) system. The FAA is issuing 

this AD to address failure of the spoiler 

deflection to engage the MONFD. The unsafe 

condition, if not addressed, could lead to 

significant throttle split, leading to 

asymmetric thrust and the subsequent lack of 

autothrottle disengagement, which could 

result in an uncommanded roll and 

consequent loss of control of the airplane, 

and reduced ability of the flightcrew to 

maintain the safe flight and landing 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 737–22A1399 RB, 

dated April 13, 2023, do all applicable 

actions identified in, and in accordance with, 

the Accomplishment Instructions of Boeing 

Alert Requirements Bulletin 737–22A1399 

RB, dated April 13, 2023. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin 737–22A1399, dated April 13, 2023, 

which is referred to in Boeing Alert 

Requirements Bulletin 737–22A1399 RB, 

dated April 13, 2023. 

(h) Exceptions to Requirements Bulletin 

Specifications 

Where the Compliance Time columns of 

the table in the ‘‘Compliance’’ paragraph of 

Boeing Alert Requirements Bulletin 737– 

22A1399 RB, dated April 13, 2023, use the 

phrase ‘‘the original issue date of 

Requirements Bulletin 737–22A1399 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, 


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95088 Federal Register / Vol. 89, No. 231 / Monday, December 2, 2024 / Rules and Regulations 

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 Eric Igama, Aviation Safety Engineer, 

FAA, 2200 South 216th Street, Des Moines, 

WA 98198; phone: 562–627–5388; email: 

roderick.igama@faa.gov. 

(2) Material 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 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 

737–22A1399 RB, dated April 13, 2023. 

(ii) [Reserved] 

(3) For the 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 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 November 7, 2024. 

Peter A. White, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–28134 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–2024–2014; Project 

Identifier MCAI–2024–00162–E; Amendment 

39–22883; AD 2024–23–04] 

RIN 2120–AA64 

Airworthiness Directives; Rolls-Royce 

Deutschland Ltd & Co KG Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2023–21– 

08 for certain Rolls-Royce Deutschland 

Ltd & Co KG (RRD) Model Trent 1000 

engines. AD 2023–21–08 required 

revisions to the airworthiness limitation 

section (ALS) of the operator’s existing 

approved aircraft maintenance program 

(AMP). This AD was prompted by the 

manufacturer’s revision of the time 

limits manual (TLM) to introduce new 

or more restrictive tasks, limitations, 

and associated thresholds and intervals 

for life-limited parts. This AD requires 

revisions to the ALS of the operator’s 

existing approved AMP, as specified in 

a European Union Aviation Safety 

Agency (EASA) AD, which is 

incorporated by reference. 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–2024–2014; 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 EASA material identified in this 

AD, contact EASA, Konrad-AdenauerUfer 3, 50668 Cologne, Germany; phone: 

+49 221 8999 000; email: ADs@

easa.europa.eu. You may find this 

material on the EASA website at 

ad.easa.europa.eu. 

• You may view this material 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. It is also available at 

regulations.gov under Docket No. FAA– 

2024–2014. 

FOR FURTHER INFORMATION CONTACT: 

Barbara Caufield, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, 

Des Moines, WA 98198; phone: (781) 

238–7146; email: barbara.caufield@

faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2023–21–08, 

Amendment 39–22580 (88 FR 77889, 

November 14, 2023) (AD 2023–21–08). 

AD 2023–21–08 applied to certain RRD 

Model Trent 1000–A, Trent 1000–AE, 

Trent 1000–C, Trent 1000–CE, Trent 

1000–D, Trent 1000–E, Trent 1000–G, 

and Trent 1000–H engines. AD 2023– 

21–08 required revisions to the ALS of 

the operator’s existing approved AMP as 

specified in EASA AD 2022–0259, dated 

December 20, 2022. The FAA issued AD 

2023–21–08 to prevent the failure of 

critical rotating parts. 

The NPRM published in the Federal 

Register on August 9, 2024 (89 FR 

65270). The NPRM was prompted by 

EASA AD 2024–0062, dated March 6, 

2024 (EASA AD 2024–0062) (also 

referred to as the MCAI), issued by 

EASA, which is the Technical Agent for 

the Member States of the European 

Union. The MCAI states that the 

manufacturer published a revised TLM 

introducing new or more restrictive 

tasks and limitations. These new or 

more restrictive tasks and limitations 

include updating Direct Accumulation 

Counting data files. 

In the NPRM, the FAA proposed to 

retain none of the requirements of AD 

2023–21–08. The NPRM proposed to 

require revising the ALS of the 

operator’s existing approved AMP, as 

specified in EASA AD 2024–0062. The 

FAA is issuing this AD to prevent the 

failure of rotating parts. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2024–2014. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received a comment from 

The Boeing Company, who supported 

the NPRM without change. 


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