75462 Federal Register / Vol. 89, No. 179 / Monday, September 16, 2024 / Rules and Regulations 

(a) Effective Date 

This airworthiness directive (AD) is 

effective October 21, 2024. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to Bell Textron Canada 

Limited Model 505 helicopters, certificated 

in any category, as identified in Transport 

Canada AD CF–2023–51, dated July 11, 2023 

(Transport Canada AD CF–2023–51). 

(d) Subject 

Joint Aircraft Service Component (JASC) 

Code: 2810, Fuel Storage. 

(e) Unsafe Condition 

This AD was prompted by a fuel leakage 

discovered during fuel system crash impact 

testing activity. The FAA is issuing this AD 

to prevent the fuel drain quick disconnect 

valve from catching on the airframe cutout 

and reduce the load on the valve body by 

preventing metal-to-metal contact following 

an impact. The unsafe condition, if not 

addressed, could result in a fuel leakage, post 

impact fire, injuries to occupants, and 

reduction in time to evacuate the helicopter. 

(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, Transport Canada AD CF– 

2023–51. 

(h) Exceptions to Transport Canada AD CF– 

2023–51 

Where Transport Canada AD CF–2023–51 

refers to its effective date, this AD requires 

using the effective date of this AD. 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) 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 local 

Flight Standards District Office, as 

appropriate. If sending information directly 

to the manager of the International Validation 

Branch, send it to the attention of the person 

identified in paragraph (j) of this AD. 

Information may be emailed to: 9-AVS-AIR730-AMOC@faa.gov. 

(2) Before using any approved AMOC, 

notify your appropriate principal inspector, 

or lacking a principal inspector, the manager 

of the local flight standards district office/ 

certificate holding district office. 

(j) Related Information 

For more information about this AD, 

contact Michael Hughlett, Aviation Safety 

Engineer, FAA, 1600 Stewart Avenue, Suite 

410, Westbury, NY 11590; phone (817) 222– 

5110; email michael.hughlett@faa.gov. 

(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) Transport Canada AD CF–2023–51, 

dated July 11, 2023. 

(ii) [Reserved] 

(3) For Transport Canada AD CF–2023–51 

material identified in this AD, contact 

Transport Canada, Transport Canada 

National Aircraft Certification, 159 Cleopatra 

Drive, Nepean, Ontario, K1A 0N5, CANADA; 

telephone 888–663–3639; email 

TC.AirworthinessDirectivesConsignesdenavigabilite.TC@tc.gc.ca; 

internet tc.canada.ca/en/aviation. You may 

find the Transport Canada material on the 

Transport Canada website at 

wwwapps.tc.gc.ca/Saf-Sec-Sur/2/cawisswimn/ad_qs1.aspx. 

(4) You may view this material at the FAA, 

Office of the Regional Counsel, Southwest 

Region, 10101 Hillwood Pkwy., Room 6N– 

321, Fort Worth, TX 76177. For information 

on the availability of this material at the 

FAA, call (817) 222–5110. 

(5) You may view this material at the 

National Archives and Records 

Administration (NARA). For information on 

the availability of this material at NARA, 

visit www.archives.gov/federal-register/cfr/ 

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

Issued on July 23, 2024. 

Steven W. Thompson, 

Acting Deputy Director, Compliance & 

Airworthiness Division, Aircraft Certification 

Service. 

[FR Doc. 2024–20843 Filed 9–13–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–1000; Project 

Identifier AD–2023–01051–T; Amendment 

39–22809; AD 2024–16–03] 

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 747–400F 

series airplanes. This AD was prompted 

by a report that cap seals were not 

applied to certain fasteners in the fuel 

tanks during production. This AD 

requires applying cap seals to certain 

fastener collars inside the fuel tanks. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

DATES: This AD is effective October 21, 

2024. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of October 21, 2024. 

ADDRESSES: 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–1000; 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 

Boulevard, 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 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–2024–1000. 

FOR FURTHER INFORMATION CONTACT: 

Samuel Dorsey, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, 

Des Moines, WA 98198; telephone 206– 

231–3415; email samuel.j.dorsey@

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 747–400F series airplanes. The 

NPRM published in the Federal 

Register on April 12, 2024 (89 FR 

25823). The NPRM was prompted by a 

report indicating that cap seals were not 

applied to certain fasteners in the fuel 

tank during production. The FAA 

issued AD 2022–10–11, Amendment 

39–22049 (87 FR 34120, June 6, 2022) to 

require, among other actions, 

application of cap seals to certain 

fasteners in the fuel tank on airplanes 

having line numbers 645 through 1363 

inclusive. Cap seals were determined to 

be a necessary feature by SFAR 88 

reviews and were required to be 


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Federal Register / Vol. 89, No. 179 / Monday, September 16, 2024 / Rules and Regulations 75463 

retrofitted onto existing airplanes by AD 

2022–10–11 and earlier ADs. Boeing 

intended to incorporate similar changes 

on future airplanes, ultimately those 

having line numbers 1364 through 1419 

inclusive, via a production design 

change. However, Boeing discovered 

that the design change omitted 

application of the cap seals on eight 

fasteners (four each on the left and right 

wings in the inboard main fuel tanks). 

Without these cap seals, the ends of the 

fasteners do not have sufficient 

electrical insulation to prevent arcing in 

the event of a lightning strike or highpowered short circuit, possibly creating 

an ignition source in the inboard main 

fuel tanks. A failure to prevent possible 

ignition sources in the fuel tank, in 

combination with flammable fuel 

vapors, could result in an explosion or 

fire and consequent loss of the airplane. 

In the NPRM, the FAA proposed to 

require applying cap seals to certain 

fastener collars inside the fuel tanks. 

The FAA is issuing this AD to address 

the unsafe condition on these products. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from Air 

Line Pilots Association, International 

(ALPA) and an individual who 

supported the NPRM without change. 

The FAA also received an additional 

four comments from individuals who 

had no objection to the NPRM. One 

commenter expressed concern about the 

effect on safety of certain internal 

Boeing practices. This comment is 

outside the scope of the NPRM. 

The FAA received an additional 

comment from Boeing. The following 

presents that comment and the FAA’s 

response. 

Request for Clarification of Sealant Part 

Number 

Boeing requested an exception be 

added to paragraph (h) of the proposed 

AD to correct an incorrect part number 

listed in the service bulletin for the 

sealant. Boeing Alert Requirements 

Bulletin 747–57A2371 RB, dated 

September 29, 2023, inadvertently 

specifies the application of sealant 

Boeing Material Specification (BMS) 5– 

45, CLASS B–2, GRADE 1, for certain 

required actions. GRADE 1 does not 

apply to the specification noted. Boeing 

informed customers of this 

typographical error via Information 

Notice 747–57A2371 IN–01 dated May 

20, 2024. 

The FAA agrees and has added an 

exception in paragraph (h)(2) of this AD 

to correct the typographical error. As 

stated by Boeing, Class B BMS 5–45 

sealant does not have an additional 

grade identifier. Only Class A BMS 5– 

45 sealant possesses a grade identifier. 

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, 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 Boeing Alert 

Requirements Bulletin 747–57A2371 

RB, dated September 29, 2023. This 

material specifies procedures for 

applying cap seals to four fastener 

collars inside the fuel tank common to 

the stiffeners located at the front spar on 

the left and right wings. 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 15 airplanes of U.S. registry. The 

FAA estimates the following costs to 

comply with this AD: 

ESTIMATED COSTS

Action Labor cost Parts cost Cost per 

product 

Cost on U.S. 

operators 

Apply cap seals ............................................... 37 work-hours × $85 per hour = $3,145 ........ $1,000 $4,145 $62,175 

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. 


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75464 Federal Register / Vol. 89, No. 179 / Monday, September 16, 2024 / Rules and Regulations 

§ 39.13 [Amended] 

■ 2. The FAA amends § 39.13 by adding 

the following new airworthiness 

directive: 

2024–16–03 The Boeing Company: 

Amendment 39–22809; Docket No. 

FAA–2024–1000; Project Identifier AD– 

2023–01051–T. 

(a) Effective Date 

This airworthiness directive (AD) is 

effective. 

(b) Affected ADs 

None. 

(c) Applicability 

This AD applies to The Boeing Company 

Model 747–400F series airplanes, certificated 

in any category, as identified in Boeing Alert 

Requirements Bulletin 747–57A2371 RB, 

dated September 29, 2023. 

(d) Subject 

Air Transport Association (ATA) of 

America Code 57, Wings. 

(e) Unsafe Condition 

This AD was prompted by a report that cap 

seals were not applied to certain fasteners in 

the fuel tanks during production. The FAA 

is issuing this AD to address missing cap 

seals in the fuel tanks. The unsafe condition, 

if not addressed, could result in a failure to 

prevent possible ignition sources in the fuel 

tanks, which in combination with flammable 

fuel vapors, could result in an explosion or 

fire and consequent loss 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 747–57A2371 RB, 

dated September 29, 2023, do all applicable 

actions identified in, and in accordance with, 

the Accomplishment Instructions of Boeing 

Alert Requirements Bulletin 747–57A2371 

RB, dated September 29, 2023. 

Note 1 to paragraph (g): Guidance for 

accomplishing the actions required by this 

AD can be found in Boeing Alert Service 

Bulletin 747–57A2371, dated September 29, 

2023, which is referred to in Boeing Alert 

Requirements Bulletin 747–57A2371 RB, 

dated September 29, 2023. 

(h) Exceptions to Service Information 

Specifications 

(1) Where Compliance Time columns of 

the tables in the ‘‘Compliance’’ paragraph of 

Boeing Alert Requirements Bulletin 747– 

57A2371 RB, dated September 29, 2023, use 

the phrase ‘‘the original issue date of 

Requirements Bulletin 747–57A2371 RB,’’ 

this AD requires using the effective date of 

this AD. 

(2) Where Boeing Alert Requirements 

Bulletin 747–57A2371 RB, dated September 

29, 2023, states ‘‘BMS 5–45, CLASS B–2, 

GRADE 1,’’ this AD requires replacing that 

text with ‘‘BMS 5–45, CLASS B–2.’’ 

(i) Alternative Methods of Compliance 

(AMOCs) 

(1) The Manager, AIR–520, Continued 

Operational Safety Branch, FAA, has the 

authority to approve AMOCs for this AD, if 

requested using the procedures found in 14 

CFR 39.19. In accordance with 14 CFR 39.19, 

send your request to your principal inspector 

or responsible Flight Standards Office, as 

appropriate. If sending information directly 

to the manager of the certification office, 

send it to the attention of the person 

identified in paragraph (j)(1) of this AD. 

Information may be emailed to: 9-ANMSeattle-ACO-AMOC-Requests@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 Samuel Dorsey, Aviation Safety 

Engineer, FAA, 2200 South 216th Street, Des 

Moines, WA 98198; telephone 206–231– 

3415; email samuel.j.dorsey@faa.gov. 

(2) Service information identified in this 

AD that is not incorporated by reference is 

available at the address specified in 

paragraph (k)(3) of this AD. 

(k) Material Incorporated by Reference 

(1) The Director of the Federal Register 

approved the incorporation by reference 

(IBR) of the material listed in this paragraph 

under 5 U.S.C. 552(a) and 1 CFR part 51. 

(2) You must use this material as 

applicable to do the actions required by this 

AD, unless the AD specifies otherwise. 

(i) Boeing Alert Requirements Bulletin 

747–57A2371 RB, dated September 29, 2023. 

(ii) [Reserved] 

(3) For Boeing material identified in this 

AD, contact Boeing Commercial Airplanes, 

Attention: Contractual & Data Services 

(C&DS), 2600 Westminster Boulevard, 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-locationsoremailfr.inspection@nara.gov. 

Issued on July 30, 2024. 

Peter A. White, 

Deputy Director, Integrated Certificate 

Management Division, Aircraft Certification 

Service. 

[FR Doc. 2024–20834 Filed 9–13–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–0992; Project 

Identifier MCAI–2024–00030–T; Amendment 

39–22808; AD 2024–16–02] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2018–01– 

07, AD 2018–19–33, AD 2019–21–01, 

AD 2021–26–20, AD 2022–13–09, AD 

2022–14–06, AD 2023–09–05, and AD 

2023–26–06, which applied to all 

Airbus SAS Model A300 B4–600, B4– 

600R, and F4–600R series airplanes, and 

Model A300 C4–605R Variant F 

airplanes (collectively called Model 

A300–600 series airplanes); and AD 

2020–23–11, which applied to all 

Airbus SAS Model A300 and A300–600 

series airplanes. AD 2018–01–07, AD 

2018–19–33, AD 2019–21–01, AD 2021– 

26–20, AD 2022–13–09, AD 2022–14– 

06, AD 2023–09–05, and AD 2023–26– 

06 required revising the existing 

maintenance or inspection program, as 

applicable, to incorporate new or more 

restrictive airworthiness limitations. AD 

2020–23–11 required repetitive 

inspections for discrepancies of certain 

areas in and around the fuselage and 

repair if necessary. This AD was 

prompted by a determination that new 

or more restrictive airworthiness 

limitations are necessary. This AD 

continues to require certain actions 

specified in the superseded ADs, 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. This AD also 

removes the Model A300 series 

airplanes from the applicability. The 

FAA is issuing this AD to address the 

unsafe condition on these products. 

DATES: This AD is effective October 21, 

2024. 


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