NPRM FAA-2025-3997

Became AD 2026-19-04

Proposed airworthiness directive · Boeing

Published
November 17, 2025 · 90 FR 51216
Comments due
January 2, 2026
Action
Notice of proposed rulemaking (NPRM)
Docket
FAA-2025-3997
Project
AD-2025-01471-T
FR document
2025-20013
Products
Aircraft

A proposal is not in force. If adopted, it becomes an AD, usually with changes. Only the Federal Register edition is official.

Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This proposed AD was prompted by a report of overheated alternating current motor pumps (ACMP) that caused a fire in the main landing gear (MLG) wheel well. This proposed AD would require a records check or inspection for any installed ACMP with a certain part number and applicable on-condition actions. This proposed AD would also prohibit the installation of affected parts. The FAA is proposing this AD to address the unsafe condition on these products.

The resulting AD

Notices in this docket · 1