DEPARTMENT OF TRANSPORTATION
<SUBAGY>Federal Aviation Administration</SUBAGY>
<CFR>14 CFR Part 39</CFR>
<DEPDOC>[Docket No. FAA-2025-5404; Project Identifier MCAI-2025-00424-T]</DEPDOC>
<RIN>RIN 2120-AA64</RIN>
<SUBJECT>Airworthiness Directives; Gulfstream Aerospace LP Airplanes</SUBJECT>
<HD SOURCE="HED">AGENCY:</HD>
Federal Aviation Administration (FAA), DOT.
<HD SOURCE="HED">ACTION:</HD>
Notice of proposed rulemaking (NPRM).
<SUM>
<HD SOURCE="HED">SUMMARY:</HD>
The FAA proposes to adopt a new airworthiness directive (AD) for certain Gulfstream Aerospace LP (GALP) Model Gulfstream G280 airplanes. This proposed AD was prompted by reports of the accumulation of water in electrical connectors located in the aft fuselage directly below the empennage, resulting in empennage flight control related crew alerting system (CAS) messages. This proposed AD would require retrofitting the flight controls empennage electrical harness. The FAA is proposing this AD to address the unsafe condition on these products.
</SUM>
<EFFDATE>
<HD SOURCE="HED">DATES:</HD>
The FAA must receive comments on this proposed AD by February 23, 2026.
</EFFDATE>
<HD SOURCE="HED">ADDRESSES:</HD>
You may send comments, using the procedures found in 14 CFR 11.43 and 11.45, by any of the following methods:
•
<E T="03">Federal eRulemaking Portal:</E>
Go to
<E T="03">regulations.gov.</E>
Follow the instructions for submitting comments.
•
<E T="03">Fax:</E>
202-493-2251.
•
<E T="03">Mail:</E>
U.S. Department of Transportation, Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE, Washington, DC 20590.
•
<E T="03">Hand Delivery:</E>
Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays.
<E T="03">AD Docket:</E>
You may examine the AD docket at
<E T="03">regulations.gov</E>
under Docket No. FAA-2025-5404; or in person at Docket Operations between
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