Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 76403 

2024–16–11 Dassault Aviation: 

Amendment 39–22817; Docket No. 

FAA–2024–1473; Project Identifier 

MCAI–2024–00195–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 23, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to all Dassault Aviation 

Model FALCON 7X airplanes, certificated in 

any category. 

Note 1 to paragraph (c): Model FALCON 

7X airplanes with modification M1000 

incorporated are commonly referred to as 

‘‘Model FALCON 8X’’ airplanes as a 

marketing designation. 

(d) Subject 

Air Transport Association (ATA) of 

America Code: 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by reports of 

excessive thickness of the trailing edge of 

certain ailerons, which may affect the 

assembly of the rear spar with the lower and 

upper skins. The FAA is issuing this AD to 

address the thickness of the trailing edge of 

certain ailerons. The unsafe condition, if not 

addressed, could result in reduced structural 

integrity of the aileron. 

(f) Compliance 

Comply with this AD within the 

compliance times specified, unless already 

done. 

(g) Requirements 

Except as specified in paragraphs (h) and 

(i) of this AD: Comply with all required 

actions and compliance times specified in, 

and in accordance with, European Union 

Aviation Safety Agency (EASA) AD 2024– 

0076, dated March 19, 2024 (EASA AD 2024– 

0076). 

(h) Exceptions to EASA AD 2024–0076 

(1) Where paragraph (3) of EASA AD 2024– 

0076 specifies to ‘‘contact Dassault for 

approved corrective action(s) instructions 

and accomplish those instructions 

accordingly,’’ this AD requires replacing that 

text with ‘‘repair the discrepancy using a 

method approved by the Manager, 

International Validation Branch, FAA; or 

EASA; or Dassault’s EASA Design 

Organization Approval (DOA). If approved by 

the DOA, the approval must include the 

DOA-authorized signature.’’ 

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

section of EASA AD 2024–0076. 

(i) No Reporting Requirement 

Although the service information 

referenced in EASA AD 2024–0076 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. Information may be 

emailed to: 9-AVS-AIR-730-AMOC@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, International Validation 

Branch, FAA; or EASA; or Dassault 

Aviation’s EASA DOA. If approved by the 

DOA, the approval must include the DOAauthorized signature. 

(k) Additional Information 

For more information about this AD, 

contact Tom Rodriguez, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; telephone 206– 

231–3226; email Tom.Rodriguez@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 this AD specifies otherwise. 

(i) European Union Aviation Safety Agency 

(EASA) AD 2024–0076, dated March 19, 

2024. 

(ii) [Reserved] 

(3) For EASA AD 2024–0076, 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 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. 2024–21179 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–2024–0455; Project 

Identifier MCAI–2023–00997–T; Amendment 

39–22805; AD 2024–15–13] 

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. Model EMB–545 and 

EMB–550 airplanes. This AD was 

prompted by occurrences of premature 

cracks in the outer layer of certain flight 

deck side windows caused by 

interference due to manufacturing 

tolerances. This AD requires initial and 

repetitive inspections of the flight deck 

side windows and applicable corrective 

actions, and prohibits the installation of 

affected flight deck side windows, 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 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–2024–0455; 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 ANAC material identified in 

this AD, contact National Civil Aviation 

Agency (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; 


khammond on DSKJM1Z7X2PROD with RULES
76404 Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 

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

this material on the ANAC website at 

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

DAE.asp. It is also available at 

regulations.gov under Docket No. FAA– 

2024–0455. 

• 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–2024–0455. 

FOR FURTHER INFORMATION CONTACT: 

Hassan Ibrahim, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

206–231–3653; email: 

hassan.m.ibrahim@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 Embraer S.A. Model 

EMB–545 and EMB–550 airplanes. The 

NPRM published in the Federal 

Register on March 7, 2024 (89 FR 

16489). The NPRM was prompted by 

ANAC AD 2023–08–03R01, effective 

November 2, 2023 (ANAC AD 2023–08– 

03R01) (also referred to as the MCAI). 

The MCAI stated that premature cracks 

have occurred in the outer layer of lefthand and right-hand flight deck side 

windows with part number (P/N) NP– 

200402–7 or P/N NP–200402–8, caused 

by interference due to manufacturing 

tolerances. 

In the NPRM, the FAA proposed to 

require initial and repetitive inspections 

of the flight deck side windows and 

applicable corrective actions, and to 

prohibit the installation of affected 

flight deck side windows, as specified 

in ANAC AD 2023–08–03R01. The FAA 

is issuing this AD to address cracks, 

delamination, scratches, erosion, and 

any other damage with the affected lefthand and right-hand flight deck side 

windows, which may subject the inner 

layer of the window to unpredicted 

loads for several flights, which could 

result in window failure and subsequent 

in-flight depressurization events. 

You may examine the MCAI in the 

AD docket at regulations.gov under 

Docket No. FAA–2024–0455. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received one comment, from 

Embraer S.A. The following presents the 

comment received on the NPRM and the 

FAA’s response to the comment. 

Request for Change to Exceptions 

Paragraph 

Paragraph (b)(1)(i) of ANAC AD 2023– 

08–03R01 specified replacement of a 

window if ‘‘any crack in the outer layer’’ 

is detected. Paragraph (h)(2) of the 

proposed AD, however, specified 

replacement of a window if ‘‘any crack, 

delamination, or any other damage’’ is 

found. Embraer stated that delamination 

is commonly defined as a reduced 

adhesion or separation of the interlayer 

between the acrylic plies. Embraer 

claimed that delamination is found with 

some frequency in airplane windows 

and may be present during the 

inspection. Embraer added that 

delamination, as well as other typical 

damage (scratches, crazing, etc.) is not a 

structural concern, but would require 

the immediate window replacement 

according to the proposed AD. Embraer 

was concerned that the text of the 

proposed AD would require actions 

beyond the original intent of the ANAC 

AD, which is to provide instructions if 

a crack is identified. Embraer claimed 

that a crack in the window outer ply 

caused by the interference with its 

aluminum strap is the condition that 

may develop into the unsafe condition. 

Since the commenter submitted the 

comment, ANAC has revised the MCAI. 

ANAC AD 2023–08–03R02, effective 

May 10, 2024 (ANAC AD 2023–08– 

03R02), clarifies the corrective actions 

for damages other than cracks, although 

it does not change the intent: If any 

crack in the outer layer is found, the 

revised MCAI requires replacing the 

window, and if delamination, scratches, 

erosion, or any damage other than a 

crack is found, the revised MCAI 

requires corrective actions that depend 

on the extent of the findings, as 

specified in Task 56–12–00–200–802–A, 

‘‘Cockpit Side Window—Allowable 

limits,’’ Revision 50, dated May 12, 

2023, as published in Aircraft 

Maintenance Manual AMM–5613, Part 

II (Maintenance Practices and 

Procedures-MPP), or further revisions of 

this task approved by ANAC. 

The FAA affirms that maintenance 

procedures exist with limits defined by 

the window manufacturer in case of 

delamination, scratches, erosion, or any 

other damage. With the updated 

procedures, the FAA therefore agrees 

that the exception specified in 

paragraph (h)(2) of the proposed AD is 

unnecessary. The FAA has made the 

following changes to this AD: 

• Paragraph (g) of this AD requires 

the actions specified in ANAC AD 

2023–08–03R02 (instead of ANAC AD 

2023–08–03R01). 

• Paragraph (h)(2) of the proposed AD 

has been removed from this AD. 

• Paragraph (i) has been added to this 

AD to provide credit if the actions in 

ANAC AD 2023–08–03R01 were 

accomplished before the effective date 

of this AD. 

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. 

Material Incorporated by Reference 

Under 1 CFR Part 51 

The FAA reviewed ANAC AD 2023– 

08–03R02, effective May 10, 2024. This 

material specifies procedures for initial 

and repetitive general visual inspections 

of the left-hand and right-hand flight 

deck side windows with P/N NP– 

200402–7 or P/N NP–200402–8 to detect 

cracks, delamination, scratches, erosion, 

and any other damage (such as chipping 

and crazing). Corrective actions include 

window replacement and other 

maintenance procedures depending on 

the extent of the findings. ANAC AD 

2023–08–03R02 also prohibits the 

installation of flight deck side windows 

with P/N NP–200402–7 or P/N NP– 

200402–8, on any airplane. 

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 this AD affects 44 

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. 181 / Wednesday, September 18, 2024 / Rules and Regulations 76405 

ESTIMATED COSTS FOR REQUIRED ACTIONS

Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

1 work-hour × $85 per hour = $85 .............................................................................................. $0 $85 $3,740 

The FAA estimates the following 

costs to do any on-condition actions that 

would be required based on the results 

of any required actions. The FAA has no 

way of determining the number of 

aircraft that might need these oncondition actions: 

ESTIMATED COSTS OF ON-CONDITION ACTIONS

Labor cost Parts cost Cost per window 

Up to 15 work-hours × $85 per hour = $1,275 ............................................................ $21,636 Up to $22,911. 

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: 

2024–15–13 Embraer S.A.: Amendment 39– 

22805; Docket No. FAA–2024–0455; 

Project Identifier MCAI–2023–00997–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 23, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Embraer S.A. Model 

EMB–545 and EMB–550 airplanes, 

certificated in any category, as identified in 

Ageˆncia Nacional de Aviac ̧a ̃o Civil (ANAC) 

AD 2023–08–03R02, effective May 10, 2024 

(ANAC AD 2023–08–03R02). 

(d) Subject 

Air Transport Association (ATA) of 

America Code 56, Windows. 

(e) Unsafe Condition 

This AD was prompted by occurrences of 

premature cracks in the outer layer of certain 

flight deck side windows caused by 

interference due to manufacturing tolerances. 

The FAA is issuing this AD to address cracks, 

delamination, scratches, erosion, and any 

other damage of the flight deck side 

windows. The unsafe condition, if not 

addressed, may subject the inner layer of the 

window to unpredicted loads for several 

flights, which could result in window failure 

and subsequent in-flight depressurization 

events. 

(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, ANAC AD 2023–08–03R02. 

(h) Exceptions to ANAC AD 2023–08–03R02 

(1) Where ANAC AD 2023–08–03R02 refers 

to its effective date or ‘‘November 02nd, 

2023, the effective date of the AD 2023–08– 

03R01,’’ this AD requires using the effective 

date of this AD. 

(2) Where paragraph (b)(2) of ANAC AD 

2023–08–03R02 specifies ‘‘at each 2,000 FC,’’ 

for this AD, replace that text with ‘‘at 

intervals not to exceed 2,000 FC.’’ 

(3) This AD does not adopt paragraph (d) 

of ANAC AD 2023–08–03R02. 

(i) Credit for Previous Actions 

This paragraph provides credit for actions 

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

actions were performed before the effective 

date of this AD using ANAC AD 2023–08– 

03R01, effective November 2, 2023. 

(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 


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76406 Federal Register / Vol. 89, No. 181 / Wednesday, September 18, 2024 / Rules and Regulations 

paragraph (k) of this AD. Information may be 

emailed to: AVS-AIR-730-AMOC@faa.gov. 

Before using any approved AMOC, notify 

your appropriate principal inspector, or 

lacking a principal inspector, the manager of 

the responsible Flight Standards Office. 

(2) Contacting the Manufacturer: For any 

requirement in this AD to obtain instructions 

from a manufacturer, the instructions must 

be accomplished using a method approved 

by the Manager, International Validation 

Branch, FAA; or ANAC; or ANAC’s 

authorized Designee. If approved by the 

ANAC Designee, the approval must include 

the Designee’s authorized signature. 

(k) Additional Information 

For more information about this AD, 

contact Hassan Ibrahim, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone: 206–231– 

3653; email: hassan.m.ibrahim@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 this AD specifies otherwise. 

(i) Ageˆncia Nacional de Aviac ̧a ̃o Civil 

(ANAC) AD 2023–08–03R02, effective May 

10, 2024. 

(ii) [Reserved] 

(3) For ANAC AD 2023–08–03R02 

identified in this AD, 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 at 

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

DAE.asp. 

(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 September 12, 2024. 

Victor Wicklund, 

Deputy Director, Compliance & Airworthiness 

Division, Aircraft Certification Service. 

[FR Doc. 2024–21177 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–2024–1293; Project 

Identifier MCAI–2023–01283–T; Amendment 

39–22804; AD 2024–15–12] 

RIN 2120–AA64 

Airworthiness Directives; Saab AB, 

(Formerly Known as Saab AB, Support 

and Services) Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2021–26– 

05, which applied to all Saab AB Model 

SAAB 2000 airplanes. AD 2021–26–05 

required revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. 

This AD was prompted by a 

determination that new or more 

restrictive airworthiness limitations are 

necessary. This AD continues to require 

certain actions in AD 2021–26–05 and 

requires revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations, 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. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain other publication listed in 

this AD as of February 15, 2022 (87 FR 

1335, January 11, 2022). 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–1293; 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 at 

ad.easa.europa.eu. 

• 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–2024–1293. 

FOR FURTHER INFORMATION CONTACT: 

Shahram Daneshmandi, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, 

Suite 410, Westbury, NY 11590; phone: 

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 2021–26–05, 

Amendment 39–21863 (87 FR 1335, 

January 11, 2022) (AD 2021–26–05). AD 

2021–26–05 applied to all Saab AB, 

Support and Services Model SAAB 2000 

airplanes. AD 2021–26–05 required 

revising the existing maintenance or 

inspection program, as applicable, to 

incorporate new or more restrictive 

airworthiness limitations. The FAA 

issued AD 2021–26–05 to address, 

among other things, fatigue cracking of 

principal structural elements (PSEs) and 

corrosion prevention and control. This 

unsafe condition, if not addressed, 

could result in reduced structural 

integrity of a PSE, and lead to loss of 

control of the airplane. 

The NPRM published in the Federal 

Register on May 14, 2024 (89 FR 41903). 

The NPRM was prompted by AD 2023– 

0220, dated December 21, 2023 (EASA 

AD 2023–0220) (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 

new or more restrictive airworthiness 

limitations have been developed. 

In the NPRM, the FAA proposed to 

continue to require certain actions in 

AD 2021–26–05 and to require revising 

the existing maintenance or inspection 

program, as applicable, to incorporate 

new or more restrictive airworthiness 

limitations, as specified in EASA AD 

2023–0220. The FAA is issuing this AD 

to address among other things, fatigue 

cracking of PSEs and corrosion 

prevention and control. The unsafe 

condition, if not addressed, could result 

in reduced structural integrity of a PSE, 


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