This section of the FEDERAL REGISTER

contains notices to the public of the proposed

issuance of rules and regulations. The

purpose of these notices is to give interested

persons an opportunity to participate in the

rule making prior to the adoption of the final

rules.

Proposed Rules Federal Register

88173 

Vol. 89, No. 216 

Thursday, November 7, 2024 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2142; Project 

Identifier AD–2024–00033–A] 

RIN 2120–AA64 

Airworthiness Directives; Piper 

Aircraft, Inc. Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM); extension of comment period. 

SUMMARY: This document announces an 

extension of the comment period for the 

referenced NPRM, which proposed to 

supersede Airworthiness Directive (AD) 

2020–26–16, which applies to certain 

Piper Aircraft, Inc. (Piper) Model PA– 

28–151, PA–28–161, PA–28–181, PA– 

28–235, PA–28R–180, PA–28R–200, 

PA–28R–201, PA–28R–201T, PA–28RT– 

201, PA–28RT–201T, PA–32–260, PA– 

32–300, PA–32R–300, PA–32RT–300, 

and PA–32RT–300T airplanes. This 

NPRM invited comments concerning the 

proposed requirements for calculating 

the calculated service hours (CSH) to 

determine the times for required actions 

for each main wing spar; repetitively 

inspecting the lower main wing spar 

bolt holes for crack(s) and non-crack 

damage and taking corrective actions as 

needed; and replacing or modifying 

main wing spars at a specified time. 

This NPRM also invited comments 

concerning the proposal to revise the 

applicability by removing certain 

airplanes and adding a new airplane 

model. This extension of the comment 

period is necessary to provide all 

interested persons an opportunity to 

present their views on the proposed 

requirements of this NPRM. 

DATES: The comment period for the 

NPRM published on September 23, 

2024, at 89 FR 77457, and scheduled to 

close on November 7, 2024, is extended 

until December 9, 2024. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

regulations.gov. Follow the instructions 

for submitting comments. 

• Fax: (202) 493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2142; 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 NPRM, any comments 

received, and other information. The 

street address for Docket Operations is 

listed above. 

FOR FURTHER INFORMATION CONTACT: Fred 

Caplan, Aviation Safety Engineer, FAA, 

1701 Columbia Avenue, College Park, 

GA 30337; phone: (404) 474–5507; 

email: 9-ASO-ATLACO-ADS@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under the ADDRESSES section. Include 

‘‘Docket No. FAA–2024–2142; Project 

Identifier AD–2024–00033–A’’ at the 

beginning of your comments. The most 

helpful comments reference a specific 

portion of the proposal, explain the 

reason for any recommended change, 

and include supporting data. The FAA 

will consider all comments received by 

the closing date and may revise this 

proposal because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this NPRM. 

Confidential Business Information 

CBI is commercial or financial 

information that is both customarily and 

actually treated as private by its owner. 

Under the Freedom of Information Act 

(FOIA) (5 U.S.C. 552), CBI is exempt 

from public disclosure. If your 

comments responsive to this NPRM 

contain commercial or financial 

information that is customarily treated 

as private, that you actually treat as 

private, and that is relevant or 

responsive to this NPRM, it is important 

that you clearly designate the submitted 

comments as CBI. Please mark each 

page of your submission containing CBI 

as ‘‘PROPIN.’’ The FAA will treat such 

marked submissions as confidential 

under the FOIA, and they will not be 

placed in the public docket of this 

NPRM. Submissions containing CBI 

should be sent to Fred Caplan, Aviation 

Safety Engineer, FAA, 1701 Columbia 

Avenue, College Park, GA 30337. Any 

commentary that the FAA receives 

which is not specifically designated as 

CBI will be placed in the public docket 

for this rulemaking. 

Background 

The FAA issued an NPRM to amend 

14 CFR part 39 by adding an AD that 

would supersede AD 2020–26–16, 

Amendment 39–21371 (86 FR 3769, 

January 15, 2021) (AD 2020–26–16), for 

certain Piper Model PA–28–151, PA– 

28–161, PA–28–181, PA–28–235, PA– 

28R–180, PA–28R–200, PA–28R–201, 

PA–28R–201T, PA–28RT–201, PA– 

28RT–201T, PA–32–260, PA–32–300, 

PA–32R–300, PA–32RT–300, and PA– 

32RT–300T airplanes. AD 2020–26–16 

requires calculating the factored service 

hours (FSH) for each main wing spar to 

determine when an inspection is 

required, inspecting the lower main 

wing spar bolt holes for crack(s), and 

replacing any cracked main wing spar. 

Since the FAA issued AD 2020–26–16, 

the FAA evaluated the reports required 

by AD 2020–26–16 and determined that 

repetitive inspections of the lower main 

wing spar bolt holes for crack(s) and 

non-crack damage (including deep 

scratches, gouges, and thread marks) 

and replacement or modification of the 

main wing spar should be required, CSH 

should be used instead of FSH to 

determine times for required actions for 

each main wing spar, and that certain 

airplanes should be removed from the 


lotter on DSK11XQN23PROD with PROPOSALS1
88174 Federal Register / Vol. 89, No. 216 / Thursday, November 7, 2024 / Proposed Rules 

applicability and a new airplane model 

added to the applicability. 

The NPRM published in the Federal 

Register on September 23, 2024 (89 FR 

77457). In the NPRM, the FAA proposed 

to require calculating the CSH for each 

main wing spar; repetitively inspecting 

the lower main wing spar bolt holes for 

crack(s) and non-crack damage and 

taking corrective actions as needed; 

replacing or modifying main wing spars 

at a specified time; and reporting 

inspection results to Piper and the FAA 

if any cracks are found during any 

inspection. In the NPRM, the FAA also 

proposed to revise the applicability by 

removing certain airplanes and adding a 

new airplane model. The FAA is 

proposing this AD to detect and correct 

fatigue cracks in the lower main wing 

spar cap bolt holes. The unsafe 

condition, if not addressed, could result 

in a wing separating from the fuselage 

in flight. 

Actions Since the NPRM Was Issued 

Since issuance of the NPRM, the FAA 

received a request from Piper to extend 

the comment period. The commenter 

stated that the NPRM is complex and 

could drive substantial costs, among 

other things. In addition, the commenter 

stated that two significant hurricanes 

have prevented operators from 

performing a dedicated review of the 

NPRM. To be able to prepare informed 

and meaningful comments Piper 

requested an extension of 30 days to the 

comment period. 

The FAA has determined that it is 

appropriate to extend the comment 

period for the NPRM to give all 

interested persons additional time to 

examine the proposed requirements and 

submit comments. The FAA has 

determined that extending the comment 

period an additional 30 days will not 

compromise the safety of the affected 

airplanes. 

Extension of Comment Period 

The FAA has reviewed the request for 

extension of the comment period for 

this notice. The commenter has shown 

a substantive interest in the proposed 

policy and good cause for the extension 

of the comment period. Therefore, in 

accordance with 14 CFR 11.47(c), the 

FAA has determined that an extension 

of the comment period for an additional 

30 days to December 9, 2024, is 

consistent with the public interest, and 

that good cause exists for taking this 

action. 

Accordingly, the comment period for 

Docket No. FAA–2024–2142 is extended 

until December 9, 2024. 

Because no other portion of the 

proposal or other regulatory information 

has been changed, the entire proposal is 

not being republished. 

Issued under authority provided by 49 

U.S.C. 106(g), 40113, and 44701. 

Issued on November 1, 2024. 

Steven W. Thompson, 

Acting Deputy Director, Compliance & 

Airworthiness Division, Aircraft Certification 

Service. 

[FR Doc. 2024–25883 Filed 11–6–24; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2024–2421; Project 

Identifier MCAI–2024–00221–T] 

RIN 2120–AA64 

Airworthiness Directives; Airbus SAS 

Airplanes 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Notice of proposed rulemaking 

(NPRM). 

SUMMARY: The FAA proposes to adopt a 

new airworthiness directive (AD) for 

certain 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). This 

proposed AD was prompted by a 

determination that new or more 

restrictive airworthiness limitations are 

necessary. This proposed AD would 

require 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 

proposed for incorporation by reference 

(IBR). The FAA is proposing this AD to 

address the unsafe condition on these 

products. 

DATES: The FAA must receive comments 

on this proposed AD by December 23, 

2024. 

ADDRESSES: You may send comments, 

using the procedures found in 14 CFR 

11.43 and 11.45, by any of the following 

methods: 

• Federal eRulemaking Portal: Go to 

regulations.gov. Follow the instructions 

for submitting comments. 

• Fax: 202–493–2251. 

• Mail: U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

• Hand Delivery: Deliver to Mail 

address above between 9 a.m. and 5 

p.m., Monday through Friday, except 

Federal holidays. 

AD Docket: You may examine the AD 

docket at regulations.gov under Docket 

No. FAA–2024–2421; 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 NPRM, the mandatory 

continuing airworthiness information 

(MCAI), any comments received, and 

other information. The street address for 

Docket Operations is listed above. 

Material Incorporated by Reference: 

• For EASA material identified in this 

proposed AD, contact EASA, KonradAdenauer-Ufer 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. It is also available at 

regulations.gov under Docket No. FAA– 

2024–2421. 

• 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. 

FOR FURTHER INFORMATION CONTACT: Dan 

Rodina, Aviation Safety Engineer, FAA, 

1600 Stewart Avenue, Suite 410, 

Westbury, NY 11590; telephone 206– 

231–3225; email Dan.Rodina@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Comments Invited 

The FAA invites you to send any 

written relevant data, views, or 

arguments about this proposal. Send 

your comments to an address listed 

under the ADDRESSES section. Include 

‘‘Docket No. FAA–2024–2421; Project 

Identifier MCAI–2024–00221–T’’ at the 

beginning of your comments. The most 

helpful comments reference a specific 

portion of the proposal, explain the 

reason for any recommended change, 

and include supporting data. The FAA 

will consider all comments received by 

the closing date and may amend this 

proposal because of those comments. 

Except for Confidential Business 

Information (CBI) as described in the 

following paragraph, and other 

information as described in 14 CFR 

11.35, the FAA will post all comments 

received, without change, to 

regulations.gov, including any personal 

information you provide. The agency 

will also post a report summarizing each 

substantive verbal contact received 

about this NPRM. 


lotter on DSK11XQN23PROD with PROPOSALS1