Maintenance and Modifications
Updates of auxiliary fuel tanks likely for bizliners
Proposed rule changes could have profound effects for operators of narrow-body bizliners with an auxiliary fuel system, and compliance could be costly for

Proposed rule changes could have profound effects for operators of narrow-body bizliners with an auxiliary fuel system, and compliance could be costly for owners of some 75 airplanes.

FAA interest in these systems began with the NTSB’s findings following the 1996 crash of a TWA Boeing 747-100 near New York JFK Airport that killed all 230 people aboard. The NTSB concluded that even though the exact origin of the spark that ignited fuel vapor in the centerline tank was unknown, it was probably a short-circuit outside the tank that allowed a high-voltage surge to travel into the tank through the wiring of the fuel-quantity indication system.