80562 Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations 

(i) Provisions for Alternative Actions, 

Intervals, and Critical Design Configuration 

Control Limitations (CDCCLs) 

After the existing maintenance or 

inspection program has been revised as 

required by paragraph (g) of this AD, no 

alternative actions (e.g., inspections), 

intervals, and CDCCLs are allowed unless 

they are approved as specified in the 

provisions of paragraph (f) of ANAC AD 

2022–12–01. 

(j) Terminating Action for AD 2020–04–16 

Accomplishing the actions required by this 

AD terminates the repetitive inspection 

requirements of paragraph (g) of AD 2020– 

04–16, for the airplanes identified in 

paragraph (a)(2) of ANAC AD 2022–12–01 

only. 

(k) 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 (l) 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 ANAC; or ANAC’s 

authorized Designee. If approved by the 

ANAC Designee, the approval must include 

the Designee’s authorized signature. 

(3) Required for Compliance (RC): Except 

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

any service information referenced in ANAC 

AD 2022–12–01 contains steps in the 

Accomplishment Instructions or figures that 

are labeled as RC, the instructions in RC 

steps, including subparagraphs under an RC 

step and any figures identified in an RC step, 

must be done to comply with this AD; any 

steps including substeps under those steps, 

that are not identified as RC are 

recommended. The instructions in steps, 

including substeps under those steps, not 

identified as RC may be deviated from using 

accepted methods in accordance with the 

operator’s maintenance or inspection 

program without obtaining approval of an 

AMOC, provided the instructions identified 

as RC can be done and the airplane can be 

put back in an airworthy condition. Any 

substitutions or changes to instructions 

identified as RC require approval of an 

AMOC. If a step or substep is labeled ‘‘RC 

Exempt,’’ then the RC requirement is 

removed from that step or substep. 

(l) Additional Information 

For more information about this AD, 

contact Joshua Bragg, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 216– 

316–6418; email joshua.k.bragg@faa.gov. 

(m) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) Ageˆncia Nacional de Aviac ̧a ̃o Civil 

(ANAC) AD 2022–12–01, effective December 

14, 2022. 

(ii) [Reserved] 

(3) For ANAC AD 2022–12–01, contact 

ANAC, Aeronautical Products Certification 

Branch (GGCP), Rua Dr. Orlando Feirabend 

Filho, 230—Centro Empresarial Aquarius— 

Torre B—Andares 14 a 18, Parque 

Residencial Aquarius, CEP 12.246–190—Sa ̃o 

Jose ́ dos Campos—SP, Brazil; telephone 55 

(12) 3203–6600; email pac@anac.gov.br; 

website anac.gov.br/en/. You may find this 

ANAC AD on the ANAC website: 

sistemas.anac.gov.br/certificacao/DA/ 

DAE.asp. 

(4) You may view this service information 

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 October 20, 2023. 

Ross Landes, 

Deputy Director for Regulatory Operations, 

Compliance & Airworthiness Division, 

Aircraft Certification Service. 

[FR Doc. 2023–25495 Filed 11–17–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1414; Project 

Identifier MCAI–2023–00438–T; Amendment 

39–22593; AD 2023–22–09] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Airbus SAS Model A350–941 airplanes. 

This AD was prompted by a report that 

the axis index washers on the forward 

and rear main landing gear door hinges 

were found inverted in production. This 

AD requires a one-time detailed 

inspection of the axis index washers for 

correct installation, and, depending on 

findings, replacement of the axis index 

washers, 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 December 

26, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of December 26, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1414; 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 in the AD docket at 

regulations.gov under Docket No. FAA– 

2023–1414. 

FOR FURTHER INFORMATION CONTACT: Dat 

Le, Aviation Safety Engineer, FAA, 1600 

Stewart Avenue, Suite 410, Westbury, 

NY 11590; telephone 516–228–7317; 

email: dat.v.le@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 Airbus SAS Model 

A350–941 airplanes. The NPRM 

published in the Federal Register on 


ddrumheller on DSK120RN23PROD with RULES1
Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations 80563 

July 14, 2023 (88 FR 45112). The NPRM 

was prompted by AD 2023–0051, dated 

March 10, 2023, issued by EASA, which 

is the Technical Agent for the Member 

States of the European Union (EASA AD 

2023–0051) (also referred to as the 

MCAI). The MCAI states that the 

forward (#1) and rear (#3) main landing 

gear door (MLGD) hinge axis index 

washers were found inverted in 

production (index washer for forward 

fitting installed at rear fitting and vice 

versa). This condition, if not detected 

and corrected, could lead to reduced 

structural integrity of the MLGD hinge 

fittings, possibly resulting in the loss of 

an MLGD during flight, and consequent 

injury to persons on the ground. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

You may examine the MCAI in the AD 

docket at regulations.gov under Docket 

No. FAA–2023–1414. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received a comment from 

Air Line Pilots Association, 

International (ALPA) who supported the 

NPRM without change. 

The FAA received additional 

comments from Delta Air Lines (Delta). 

The following presents the comments 

received on the NPRM and the FAA’s 

response to the comments. 

Request for Clarification of Required 

Actions 

Delta requested that an exception 

should be added to paragraph (h) of the 

proposed AD stating that the 

accomplishment of A350 maintenance 

procedures A350–A–32–12–72–00ZZZ– 

520Z–A and A350–A–32–12–72– 

00ZZZ–720Z–A to be utilized with the 

terminology ‘‘Refer to’’ in lieu of ‘‘in 

accordance with’’ to allow utilizing only 

the portions of the maintenance 

procedure that pertains to the 

replacement of the index washers, index 

pins and axis assemblies, one at a time, 

first the FWD side and then the AFT 

side in lieu of removing and reinstalling the entire MLGD when 

replacing the affected parts per the 

proposed AD. Delta stated that, 

alternatively, the exception could 

identify specific steps and paragraphs of 

the maintenance procedures that are 

utilized for replacement of the affected 

parts only. Delta contends that the 

removal of the entire MLGD appears not 

to be the intent of Airbus Service 

Bulletin A350–52–P048 (the service 

information referenced in EASA AD 

2023–0051), the EASA AD, and this 

proposed AD. Delta noted that the ‘‘in 

accordance with’’ language in the 

service information is contradictory to 

the detailed subsequent steps of the 

service information. 

The FAA agrees the intent was not to 

remove and re-install the MLGD, but to 

replace the affected parts. The FAA AD 

agrees that A350 maintenance 

procedures A350–A–32–12–72–00ZZZ– 

520Z–A and A350–A–32–12–72– 

00ZZZ–720Z–A are for reference when 

accomplishing the required actions. The 

FAA added paragraph (h)(2) to this AD 

to clarify the required actions. 

Request for Clarification of Figure 

Reference 

Delta requested an exception should 

be added to paragraph (h) of the 

proposed AD stating where maintenance 

procedure A350–A–52–XX–P048– 

01ZZZ–93CZ–A, paragraphs C(1)(c)3 & 

4, Figure BC refers to Detail E, change 

to Detail F; and where paragraphs 

C(2)(c)3 & 4, Figure BD, refers to Detail 

E, change to Detail F. Delta noted these 

errors are in the original issue and 

Revision 01 of Airbus Service Bulletin 

A350–52–P048. 

The FAA has confirmed with the 

manufacturer that the service 

information steps are correct and 

address the unsafe condition and that 

Figures BC and BD are for reference 

only. The manufacturer stated that it is 

considering addressing any errors in a 

future revision of Airbus Service 

Bulletin A350–52–P048. The FAA has 

not changed this AD in this regard. 

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 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 this product. Except for 

minor editorial changes, and any other 

changes described previously, this AD is 

adopted as proposed in the NPRM. 

None of the changes will increase the 

economic burden on any operator. 

Related Service Information Under 1 

CFR Part 51 

EASA AD 2023–0051 specifies 

procedures for a one-time detailed 

inspection of the MLGD forward and 

rear hinges for incorrectly installed axis 

index washers and, depending on 

findings, replacement of the axis index 

washers. 

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 23 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

2.25 work-hours × $85 per hour = $192 ..................................................................................... $0 $192 $4,416 

The FAA estimates the following 

costs to do any necessary on-condition 

action that would be required based on 

the results of any required actions. The 

FAA has no data to determine the 

number of airplanes that might need 

this on-condition action: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per 

product 

8.25 work-hours × $85 per hour = $702 ...................................................................... $10 per door ............................................. $712 


ddrumheller on DSK120RN23PROD with RULES1
80564 Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations 

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: 

2023–22–09 Airbus SAS: Amendment 39– 

22593; Docket No. FAA–2023–1414; 

Project Identifier MCAI–2023–00438–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective December 26, 2023. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Airbus SAS Model 

A350–941 airplanes, certificated in any 

category, as identified in European Union 

Aviation Safety Agency (EASA) AD 2023– 

0051, dated March 10, 2023 (EASA AD 2023– 

0051). 

(d) Subject 

Air Transport Association (ATA) of 

America Code: 52, Doors. 

(e) Unsafe Condition 

This AD was prompted by a report that the 

axis index washers on the forward and rear 

main landing gear door (MLGD) hinges were 

found inverted in production. The FAA is 

issuing this AD to address incorrectly 

installed washers. The unsafe condition, if 

not addressed, could result in reduced 

structural integrity of the MLGD hinge 

fittings, possibly resulting in a loss of an 

MLGD during flight, and consequent injury 

to persons on the ground. 

(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, EASA AD 2023–0051. 

(h) Exceptions to EASA AD 2023–0051 

(1) Where the applicability and Groups 

definitions of EASA AD 2023–0051 refer to 

serial numbers, replace the text ‘‘the SB’’ 

with ‘‘Airbus Service Bulletin A350–52– 

P048, dated November 24, 2022.’’ 

(2) Where the service information 

referenced in EASA AD 2023–0051 specifies 

to accomplish actions ‘‘in accordance with’’ 

A350 maintenance procedures A350–A–32– 

12–72–00ZZZ–520Z–A and A350–A–32–12– 

72–00ZZZ–720Z–A, for this AD, those 

maintenance procedures are for reference 

only when accomplishing the actions. 

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

section of EASA AD 2023–0051. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2023–0051 specifies 

to submit certain information to the 

manufacturer, this AD does not include that 

requirement. 

(j) Additional AD Provisions 

The following provisions also apply to this 

AD: 

(1) Alternative Methods of Compliance 

(AMOCs): The Manager, International 

Validation Branch, FAA, has the authority to 

approve AMOCs for this AD, if requested 

using the procedures found in 14 CFR 39.19. 

In accordance with 14 CFR 39.19, send your 

request to your principal inspector or 

responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, mail it to the address identified in 

paragraph (k) 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 Airbus SAS’s 

EASA Design Organization Approval (DOA). 

If approved by the DOA, the approval must 

include the DOA-authorized signature. 

(3) Required for Compliance (RC): Except 

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

any service information contains procedures 

or tests that are identified as RC, those 

procedures and tests must be done to comply 

with this AD; any procedures or tests that are 

not identified as RC are recommended. Those 

procedures and tests that are not identified 

as RC may be deviated from using accepted 

methods in accordance with the operator’s 

maintenance or inspection program without 

obtaining approval of an AMOC, provided 

the procedures and tests identified as RC can 

be done and the airplane can be put back in 

an airworthy condition. Any substitutions or 

changes to procedures or tests identified as 

RC require approval of an AMOC. 

(k) Additional Information 

For more information about this AD, 

contact Dat Le, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 516–228– 

7317; email: dat.v.le@faa.gov. 

(l) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the service information listed in this 

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

part 51. 

(2) You must use this service information 

as applicable to do the actions required by 

this AD, unless this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2023–0051, dated March 10, 

2023. 

(ii) [Reserved] 

(3) For EASA AD 2023–0051, 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: ad.easa.europa.eu. 

(4) You may view this service information 

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 


ddrumheller on DSK120RN23PROD with RULES1
Federal Register / Vol. 88, No. 222 / Monday, November 20, 2023 / Rules and Regulations 80565 

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 30, 2023. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2023–25506 Filed 11–17–23; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2023–1504; Project 

Identifier MCAI–2023–00473–A; Amendment 

39–22595; AD 2023–22–11] 

RIN 2120–AA64 

Airworthiness Directives; Embraer S.A. 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is adopting a new 

airworthiness directive (AD) for certain 

Embraer S.A. (Embraer) Model EMB– 

505 airplanes. This AD was prompted 

by an occurrence of corrosion on the 

clutch retaining bolt of the aileron 

autopilot servo mount. This AD requires 

repetitively replacing the clutch 

retaining bolt and washer of the aileron 

autopilot servo mount, as specified in 

an Ageˆncia Nacional de Aviac ̧a ̃o Civil 

(ANAC) 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 December 

26, 2023. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of December 26, 2023. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No.FAA–2023–1504; 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 service information identified 

in this final rule, contact ANAC, 

Continuing Airworthiness Technical 

Branch (GTAC), Rua Doutor Orlando 

Feirabend Filho, 230—Centro 

Empresarial Aquarius—Torre B— 

Andares 14 a 18, Parque Residencial 

Aquarius, CEP 12.246–190—Sa ̃o Jose ́

dos Campos—SP, Brazil; phone: 55 (12) 

3203–6600; email: pac@anac.gov.br; 

website: anac.gov.br/en/. You may find 

this material on the ANAC website at 

sistemas.anac.gov.br/certificacao/DA/ 

DAE.asp. 

• You may view this material at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 901 Locust, 

Kansas City, MO 64106. 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–2023–1504. 

FOR FURTHER INFORMATION CONTACT: Jim 

Rutherford, Aviation Safety Engineer, 

FAA, 1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; phone: (816) 329– 

4165; email: jim.rutherford@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 serial-numbered 

Embraer Model EMB–505 airplanes. The 

NPRM published in the Federal 

Register on July 21, 2023 (88 FR 47092). 

The NPRM was prompted by AD 2023– 

02–01R1, effective March 14, 2023 

(ANAC AD 2023–02–01R1) (also 

referred to as the MCAI), issued by 

ANAC, which is the aviation authority 

for Brazil. The MCAI states that an 

occurrence of corrosion was found on 

the clutch retaining bolt of the aileron 

autopilot servo mount. This condition 

could result in failure of the clutch 

retaining bolt of the aileron autopilot 

servo mount, which could disengage the 

clutch from the drive pin and jam the 

aileron controls, resulting in reduced 

controllability of the airplane. 

In the NPRM, the FAA proposed to 

require repetitively replacing the clutch 

retaining bolt and washer of the aileron 

autopilot servo mount, as specified in 

ANAC AD 2023–02–01R1. The FAA is 

issuing this AD to address the unsafe 

condition on these products. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2023–1504. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

Embraer and NetJets. The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Request To Revise Exceptions in 

Paragraph (h)(3) 

Embraer requested that paragraph 

(h)(3) of the proposed AD, ‘‘Exceptions 

to ANAC AD 2023–02–01R1’’, be 

revised to state ‘‘. . . this AD requires 

compliance with the most restrictive 

criteria for each applicability range (in 

months and flight hours) in Table 01 of 

ANAC AD 2023–02–01R1.’’ The 

commenter explained that this change 

would clarify the language within this 

exception so that operators would know 

that not all affected aircraft would have 

to perform the task within the most 

restrictive criteria of within 3 months or 

50 flight hours. 

The FAA agrees with the commenter’s 

request and revised paragraph (h)(3) of 

this AD accordingly. 

Request To Add a Credit for Previous 

Actions Paragraph 

NetJets requested that a credit for 

previous actions paragraph be added to 

the proposed AD, similar to paragraph 

(c) of ANAC AD 2023–02–01R1. The 

commenter explained that this change 

would allow operators to sign off the 

compliance to the FAA AD using 

Embraer Service Bulletin SB505–22– 

0004, Revision 01, dated September 23, 

2022 (Embraer SB505–22–0004, 

Revision 01); Revision 02, dated 

September 30, 2022 (Embraer SB505– 

22–0004, Revision 02); or Revision 03, 

dated October 10, 2022 (Embraer 

SB505–22–0004, Revision 03). 

The FAA disagrees with the 

commenter’s request. This AD already 

implicitly provides credit for certain 

actions completed prior to the effective 

date of this AD. Paragraph (g) of this AD 

requires operators to comply with all 

required actions and compliance times 

specified in ANAC AD 2023–02–01R1, 

except as specified in paragraphs (h) 

and (i) of this AD. Paragraph (h) of this 

AD is ‘‘Exceptions to ANAC AD 2023– 

02–01R1’’ and paragraph (i) of this AD 

is ‘‘No Reporting Requirement.’’ 

Paragraph (h) of this AD does not 

include an exception to paragraph (c) of 

ANAC AD 2023–02–01R1, which is 

identified as ‘‘Credit for previous 

actions.’’ Paragraph (c) of ANAC AD 

2023–02–01R1 provides credit for 

replacement of the aileron autopilot 

servo mount clutch retaining bolt and 

washer using Embraer Service Bulletin 

SB505–22–0004, dated September 22, 

2023; Embraer SB505–22–0004, 

Revision 01; Embraer SB505–22–0004, 

Revision 02; or Embraer SB505–22– 

0004, Revision 03. Because this AD does 

not include an exception to paragraph 


ddrumheller on DSK120RN23PROD with RULES1