AD/A320/21 - Main Landing Gear Wheel Axle
1AD/A320/21 - Main Landing Gear Wheel Axle
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
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Airbus Industrie A319, A320 and A321 Series Aeroplanes
AD/A320/21 Main Landing Gear Wheel Axle 10/91
Applicability: Models A321-111, A320-211, A320-231, Serial Numbers MSN 002 to 044, 052 to 055, 059 to 073, 076 to 078 and 081, fitted with twin wheel main landing gear.
Requirement: Action in accordance with the Technical Requirements of DGAC AD 90-096-010 (B), dated 2 May 1990.
Note: Airbus Industry Service Bulletin A320-32-1031, Revision 1, dated 19 March 1990, refers.
Compliance: Prior to the accumulation of 6 600 flights.
Background: The chrome plate grinding process used during manufacture may have caused overheating of the main landing gear axle and introduced residual stresses in the flange to axle radius. In some sliding tube assemblies, this has caused cracks under the chrome plating in the area of the brake mounting flange, with a subsequent reduction in safe operating life.