Airworthiness Directives; The Boeing Company Airplanes
Published Date: 2/6/2026
Proposed Rule
Summary
The FAA wants to keep Boeing 777 airplanes safe by checking for rust on a special satellite antenna part. They’re asking airlines to inspect this part regularly and fix any problems found. Comments on this plan are open until March 23, 2026, and these inspections might cost some time and money but will keep flights safer.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Inspection Costs for 777 Operators
If you operate Boeing 777-200, -200LR, -300, or -300ER airplanes, the FAA would require repetitive inspections for corrosion of the SATCOM high gain antenna adapter plate per Boeing Alert Requirements Bulletin 777-23A0454 RB (dated May 16, 2025). The FAA estimates this AD would affect 238 U.S.-registered airplanes and cost $935 per airplane per inspection cycle (11 work-hours at $85/hour), totaling about $222,530 for U.S. operators per inspection cycle; repairs are estimated at $425 and full replacement at $18,170 per airplane when needed.
Improved Flight Safety from Inspections
The inspections aim to find and fix corrosion on the SATCOM high gain antenna adapter plate so the antenna or adapter does not depart the airplane. Undetected corrosion could lead to a part departing airplane (PDA) event that might damage primary flight control surfaces and result in loss of continued safe flight and landing, so the rule is intended to reduce that safety risk.
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