Summary
This document proposes the supersedure of an existing airworthiness directive (AD), applicable to certain Airbus Model A319, A320, and A321 series airplanes, that currently requires relocation of the engine/master 1 relay from relay box 103VU to shelf 95VU in the avionics bay. This action would continue to require the relocation using new electrical contacts, and, for certain airplanes, would add a requirement to replace certain contacts installed in shelf 95VU during relocation of the relay with new contacts. This proposal is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by the proposed AD are intended to prevent a simultaneous cutoff of the fuel supply to both engines, which could result in a loss of engine power and consequent reduced controllability of the airplane.