Airworthiness Directives; Airbus Model A300 B4-600R and A300 F4- 600R Series Airplanes

摘要

This document proposes the supersedure of an existing airworthiness directive (AD), applicable to all Airbus Model A300 B4- 600R and A300 F4-600R series airplanes, that currently requires a one- time visual inspection for damage of the center tank fuel pumps and fuel pump canisters, and replacement of damaged fuel pumps and fuel pump canisters with new or serviceable parts. This action also would require repetitive visual inspections of the fuel pumps and repetitive eddy current inspections of the fuel pump canisters, and replacement of damaged fuel pumps and fuel pump canisters with new or serviceable parts. This action also would reduce the applicability to include only those airplanes that have a trim tank system installed. 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 detect damage to the fuel pump and fuel pump canister, which could result in loss of flame trap capability and could provide a fuel ignition source in the center fuel tank.