Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 76411 

(n) 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 this AD specifies otherwise. 

(3) The following material was approved 

for IBR on October 23, 2024. 

(i) Bombardier Service Bulletin 100–25–35, 

Revision 02, dated January 11, 2016. 

(ii) [Reserved] 

(4) The following material was approved 

for IBR on December 28, 2009 (74 FR 65401, 

December 10, 2009). 

(i) Bombardier Service Bulletin A100–25– 

30, dated July 20, 2009. 

(ii) [Reserved] 

(5) For Bombardier, Inc. material identified 

in this AD, contact Bombardier Business 

Aircraft Customer Response Center, 400 CoˆteVertu Road West, Dorval, Que ́bec H4S 1Y9, 

Canada; telephone 514–855–2999; email 

ac.yul@aero.bombardier.com; website 

bombardier.com. 

(6) 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. 

(7) 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 September 12, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–21180 Filed 9–17–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1987; Project 

Identifier MCAI–2023–00807–T; Amendment 

39–22806; AD 2024–15–14] 

RIN 2120–AA64 

Airworthiness Directives; ATR–GIE 

Avions de Transport Re ́gional 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2021–17– 

02, which applied to all ATR–GIE 

Avions de Transport Re ́gional Model 

ATR42–200, –300, and –320 airplanes. 

AD 2021–17–02 required a one-time 

inspection for discrepancies of the wire 

bundles between the left- and righthand angle of attack (AOA) probes and 

the crew alerting computer, and, 

depending on findings, applicable 

corrective actions. AD 2021–17–02 also 

required, for certain airplanes, 

modifying the captain stick shaker 

wiring, and for all airplanes, revising 

the existing aircraft flight manual (AFM) 

and applicable corresponding 

operational procedures to incorporate 

procedures for the stick pusher/shaker. 

Since the FAA issued AD 2021–17–02, 

additional modification of the affected 

wiring for certain airplanes was 

developed. This AD retains all of the 

requirements of AD 2021–17–02 and 

requires installing a new AOA power 

supply unit and removing the AFM 

amendment; 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 October 23, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 23, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1987; 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; 

telephone +49 221 8999 000; email 

ADs@easa.europa.eu; website 

easa.europa.eu. You may find this 

material on the EASA website 

ad.easa.europa.eu. 

• 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 

under Docket No. FAA–2023–1987. 

FOR FURTHER INFORMATION CONTACT: 

Shahram Daneshmandi, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; 

telephone 206–231–3220; email 

Shahram.Daneshmandi@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2021–17–02, 

Amendment 39–21685 (86 FR 48490, 

August 31, 2021) (AD 2021–17–02). AD 

2021–17–02 applied to all ATR–GIE 

Avions de Transport Re ́gional Model 

ATR42–200, –300, and –320 airplanes. 

AD 2021–17–02 required a one-time 

inspection for discrepancies of the wire 

bundles between the left- and righthand AOA probes and the crew alerting 

computer, and, depending on findings, 

applicable corrective actions. AD 2021– 

17–02 also required for certain 

airplanes, modifying the captain stick 

shaker wiring, and for all airplanes, 

revising the existing AFM and 

applicable corresponding operational 

procedures to incorporate procedures 

for the stick pusher/shaker. The FAA 

issued AD 2021–17–02 to address false 

activation of the stall warning system 

due to wiring damage on the wire 

bundle between an AOA probe and the 

crew alerting computer, which could 

result in loss of control of the airplane 

during take-off and landing phases. 

The NPRM published in the Federal 

Register on October 5, 2023 (88 FR 

69102). The NPRM was prompted by 

AD 2023–0134, dated July 5, 2023 

(EASA AD 2023–0134), issued by 

EASA, which is the Technical Agent for 

the Member States of the European 

Union. EASA AD 2023–0134 states final 

modification instructions of the affected 

wiring were developed. 

In the NPRM, the FAA proposed to 

require installing a new AOA power 

supply unit and revising the existing 

AFM, as specified in EASA AD 2023– 

0134. 

The FAA issued a supplemental 

notice of proposed rulemaking (SNPRM) 

to amend 14 CFR part 39 to supersede 

AD 2021–17–02. The SNPRM published 

in the Federal Register on May 21, 2024 

(89 FR 44568). The SNPRM was 

prompted by additional modification of 

the affected wiring for certain airplanes, 

and by the issuance of EASA AD 2023– 

0191, dated November 2, 2023 (EASA 

AD 2023–0191) (also referred to as the 

MCAI). In the SNPRM, the FAA 

proposed to retain all of the 

requirements of AD 2021–17–02. The 

NPRM also proposed to require 

installing a new AOA power supply 

unit and removing the AFM 

amendment. The FAA is issuing this AD 

to address the unsafe condition on these 

products. 


khammond on DSKJM1Z7X2PROD with RULES
76412 Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1987. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received one comment, from 

Air Line Pilots Association, 

International (ALPA), who supported 

the SNPRM without change. 

Conclusion 

This product has been approved by 

the aviation authority of another 

country and is approved for operation in 

the United States. Pursuant to the FAA’s 

bilateral agreement with this State of 

Design Authority, it has notified the 

FAA of the unsafe condition described 

in the MCAI referenced above. The FAA 

reviewed the relevant data, considered 

the comment 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 this product. Except for 

minor editorial changes this AD is 

adopted as proposed in the SNPRM. 

None of the changes will increase the 

economic burden on any operator. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

EASA AD 2023–0191 specifies 

procedures for a one-time inspection for 

discrepancies of the wire bundles 

between the left- and right-hand AOA 

probes and the crew alerting computer, 

and, depending on findings, applicable 

corrective actions (repair). EASA AD 

2023–0191 also specifies procedures, for 

certain airplanes, for modifying the 

captain stick shaker wiring, and for all 

airplanes, revising the existing AFM to 

incorporate procedures for the stick 

pusher/shaker. Finally, EASA AD 2023– 

0191 specifies procedures for installing 

the AOA power supply unit, removing 

the AFM amendment, and 

accomplishing additional modification 

of the affected wiring. 

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 26 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

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

Retained actions from AD 

2021–17–02.

Up to 14 work-hours × $85 

per hour = Up to $1,190.

$100 Up to $1,290 .......................... Up to $33,540. 

New actions ............................ 50 work-hours × $85 per hour 

= $4,250.

0 $4,250 .................................... $110,500. 

The FAA has received no definitive 

data on which to base the cost estimates 

for the on-condition actions specified in 

this 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 

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: 

■ a. Removing Airworthiness Directive 

2021–17–02, Amendment 39–21685 (86 

FR 48490, August 31, 2021); and 

■ b. Adding the following new 

Airworthiness Directive: 

2024–15–14 ATR—GIE Avions de 

Transport Re ́gional: Amendment 39– 

22806; Docket No. FAA–2023–1987; 

Project Identifier MCAI–2023–00807–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 23, 2024. 

(b) Affected ADs 

This AD replaces AD 2021–17–02, 

Amendment 39–21685 (86 FR 48490, August 

31, 2021) (AD 2021–17–02). 

(c) Applicability 

This AD applies to all ATR–GIE Avions de 

Transport Re ́gional Model ATR42–200, –300, 

and –320 airplanes, certificated in any 

category. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 31, Instruments. 

(e) Unsafe Condition 

This AD was prompted by false activation 

of the stall warning system due to wiring 

damage on the wire bundle between an angle 

of attack (AOA) probe and the crew alerting 

computer, and the development of additional 

wiring modifications and an aircraft flight 

manual (AFM) update to address the unsafe 

condition. The FAA is issuing this AD to 

address this condition, which could result in 

loss of control of the airplane during take-off 

and landing phases. 


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Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 76413 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraph (h) of this 

AD: Comply with all required actions and 

compliance times specified in, and in 

accordance with, European Union Aviation 

Safety Agency (EASA) AD 2023–0191, dated 

November 2, 2023 (EASA AD 2023–0191). 

(h) Exceptions to EASA AD 2023–0191 

(1) Where EASA AD 2023–0191 refers to 

October 27, 2020 (the effective date of EASA 

AD 2020–0221), this AD requires using 

December 3, 2020 (the effective date of AD 

2020–23–13, Amendment 39–21330 (85 FR 

73407, November 18, 2020)). 

(2) Where EASA AD 2023–0191 refers to 

February 2, 2021 (the effective date of EASA 

AD 2021–0024), this AD requires using 

October 5, 2021 (the effective date of AD 

2021–17–02). 

(3) Where paragraph (2) of EASA AD 2023– 

0191 refers to ‘‘discrepancies,’’ for this AD, 

discrepancies include, but are not limited to, 

wire damage, missing or damaged conduits, 

and incorrect routing of wiring and conduits. 

(4) Where paragraph (8) of EASA AD 2023– 

0191 specifies ‘‘accomplish the additional 

work as identified in’’ replace that text with 

‘‘accomplish the additional work as 

identified in section ‘1—ADDITIONAL 

WORK.’ ’’ 

(5) Where paragraphs (4) and (5) of EASA 

AD 2023–0191 specify to ‘‘inform all flight 

crews, and, thereafter, operate the aeroplane 

accordingly,’’ this AD does not require those 

actions, as those actions are already required 

by existing FAA operating regulations (see 14 

CFR 91.9, 91.505, and 121.137). 

(6) Where EASA AD 2023–0191 refers to its 

effective date, this AD requires using the 

effective date of this AD. 

(7) Where EASA AD 2023–0191 refers to 

July 19, 2023 (the effective date of EASA AD 

2023–0134), this AD requires using the 

effective date of this AD. 

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

section of EASA AD 2023–0191. 

(i) 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 (j) of this AD or email to: 9-AVSAIR-730-AMOC@faa.gov. If mailing 

information, also submit information by 

email. 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 EASA; or ATR–GIE Avions 

de Transport Re ́gional’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature. 

(j) Additional Information 

For more information about this AD, 

contact Shahram Daneshmandi, Aviation 

Safety Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; telephone 

206–231–3220; email 

Shahram.Daneshmandi@faa.gov. 

(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 this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2023–0191, dated November 2, 

2023. 

(ii) [Reserved] 

(3) For EASA AD 2023–0191, 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. 

(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 September 12, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–21178 Filed 9–17–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–2227; Project 

Identifier AD–2022–00113–T; Amendment 

39–22813; AD 2024–16–07] 

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 787–8, 

787–9, and 787–10 airplanes. This AD 

was prompted by incidents related to 

erroneous autothrottle (A/T) behavior 

during a balked landing with the A/T 

engaged, potential erroneous readings 

from the low range radio altimeter 

(LRRA), and possible deficiencies in 

low airspeed protections and crew 

alerting systems. This AD requires 

updating the thrust management (TM) 

and displays and crew alerting (DCA) 

operational program software (OPS). 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective October 23, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of certain publications listed in this AD 

as of October 23, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–2227; 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–2023–2227. 

FOR FURTHER INFORMATION CONTACT: 

Doug Tsuji, Aviation Safety Engineer, 

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

WA 98198; telephone: 206–231–3548; 

email: Douglas.Tsuji@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 787–8, 787–9, and 787–10 

airplanes. The NPRM published in the 

Federal Register on November 24, 2023 

(88 FR 82279). 


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