New Inspections Required for Boeing 777 Airplane Fuel Tube Assemblies
Published Date: 9/15/2025
Proposed Rule
Summary
If you fly certain Boeing 777 planes, new safety rules are coming your way! The FAA wants more frequent and detailed checks on fuel tube parts to keep flights safe. These updates mean some extra inspections and paperwork, but they help prevent big problems down the line.
Analyzed Economic Effects
3 provisions identified: 1 benefits, 2 costs, 0 mixed.
New AD covers certain Boeing 777s
The FAA proposes a new Airworthiness Directive that applies to certain Boeing Model 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes and would supersede AD 2024-19-14. The goal of the AD is to address an unsafe condition on those airplanes.
Requires repetitive inspections and tests
If you operate the affected Boeing 777 airplanes, the proposed AD would require repetitive detailed inspections (DET) and repetitive bond resistance measurements of bonding jumpers on the first fuel feed tube at left and right main fuel tank penetrations, plus any required on-condition corrective actions. These inspections and measurements must be done repeatedly as specified in the AD.
Wider applicability and maintenance changes
The proposed AD would expand the applicability to additional airplanes and require revising the existing maintenance or inspection program to incorporate a specified airworthiness limitation. Operators must update their maintenance/inspection programs to include that airworthiness limitation.
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