Opportunity
Federal Register #FAA-2025-2546
FAA Airworthiness Directive: Repetitive Inspections for Boeing 777 Fuel System Bonding
Buyer
Federal Aviation Administration, Department of Transportation
Posted
July 28, 2026
Identifier
FAA-2025-2546
The Federal Aviation Administration (FAA), under the Department of Transportation, has issued Airworthiness Directive (AD) 2026-15-02 for Boeing 777 series aircraft with GE engines. - Government Buyer: - Federal Aviation Administration (FAA), Airworthiness Products Section, Operational Safety Branch - OEM Highlight: - The Boeing Company is the primary Original Equipment Manufacturer (OEM) referenced - Products/Services and Requirements: - Mandates repetitive detailed inspections and bond resistance measurements of bonding jumpers on engine fuel feed tubes and wing structures - Per Boeing Alert Requirements Bulletin 77728A0097 RB: Inspections between engine fuel feed tube and wing structure - Per Boeing Alert Requirements Bulletin 77728A0098 RB: Inspections between engine fuel feed tube and engine nacelle strut - Requires revision of maintenance programs to incorporate new airworthiness limitations - Applies to all Boeing 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes with certain GE turbofan engines - Focus is on preventing ignition sources inside fuel tanks to mitigate explosion risk - Notable Details: - No procurement of products or services is solicited; this is a regulatory compliance requirement - The AD is considered interim pending a future terminating modification
Description
The FAA is superseding Airworthiness Directive (AD) 2024-19-14, which applied to certain Boeing Model 777-200, 777-200LR, 777-300ER, and 777F series airplanes. The previous AD required repetitive inspections and bond resistance measurement of bonding jumpers on the first fuel feed tube at the left and right main fuel tank penetrations and applicable corrective actions. The new AD expands the applicability, requires additional repetitive detailed inspections and bond resistance measurements, and mandates revising the existing maintenance or inspection program to incorporate a certain airworthiness limitation. This action addresses an unsafe condition on these Boeing airplanes.