Airworthiness Directive · Amendment 39-10177 · Airbus Model A300, A310, and A300-600 Series Airplanes
Airbus Model A300, A310, and A300-600 Series Airplanes
Superseded. A later AD replaced this one: AD 98-21-32. Comply with the one in force.
All Model Airbus Model A300, A310, and A300-600 series airplanes, certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to all Airbus Model A300, A310, and A300-600 series airplanes, that requires performing a ram air turbine (RAT) extension test; removing and disassembling the RAT uplock mechanism; performing an inspection to detect corrosion of the RAT uplock mechanism, and replacement with a new assembly, if necessary; and cleaning all the parts of the RAT control shaft and its bearing component parts. This amendment is prompted by reports indicating that the RAT did not extend during ground testing, due to corrosion in the uplock pin/shaft and the needle bearing of the RAT. The actions specified by this AD are intended to detect and correct such corrosion of the RAT, which could result in failure of the RAT to deploy and subsequent loss of emergency hydraulic power to the flight controls in the event that power is lost in both engines.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
