Summary
This document proposes the adoption of a new airworthiness directive (AD) that is applicable to certain Airbus Model A300 series airplanes. This proposal would require repetitive checks and testing of certain equipment that regulates the flow of fuel from wing tank 2A to the number 2 engine. This proposal also would require replacement of this equipment with equipment that has been designed to prevent incorrect installation; this replacement would be terminating action for the repetitive equipment checks and tests. This proposal is prompted by reports indicating that the incorrect installation of this equipment has caused the flight crew to shut off, rather than open, certain valves that regulate the flow of fuel from between this tank and engine. The actions specified by the proposed AD are intended to detect and rectify incorrect installations, which could result in the flight crew inadvertently shutting off the flow of fuel to the engine, and consequent engine failure during flight.