Airworthiness Directive · Amendment 39-17890 · Hydraulic power
Airbus Airplanes
This AD applies to Airbus Model A310-203, -204, -221, -222, -304, -322, -324, and -325 airplanes, certificated in any category, all serial numbers on which Airbus Modification Number 04797 has been embodied in production and those on which Airbus Service Bulletin A310-29-2091 has been embodied in service.
We are adopting a new airworthiness directive (AD) for certain Airbus Model A310 series airplanes. This AD was prompted by a report of an electrical arc and a hydraulic haze in the wheel bay of the left- hand main landing gear (MLG), possibly resulting from chafing between a hydraulic high pressure hose and electrical wiring of the green electrical motor pump (EMP). This AD requires modification of the electrical routing and replacement of the union elbows. We are issuing this AD to prevent chafing of hydraulic pressure hoses and electrical wiring of the green EMPs, which, in combination with a system failure, could cause an uncontrolled and undetected fire in the MLG bay.
Within 36 months after the effective date of this AD, modify the electrical routing of the EMP power supply in the hydraulic bay at frame 54 on the left-hand side and replace the union elbows to re-route the delivery pipe at the upper EMP, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A310-29-2103, dated December 21, 2012.
