Airworthiness Directive · Amendment 39-11405 · Airbus Model A319, A320, and A321 Series Airplanes
Airbus Model A319, A320, and A321 Series Airplanes
Model A319, A320, and A321 series airplanes; except those airplanes on which Airbus Modification 23740 was accomplished during production, and those airplanes on which Airbus Service Bulletin A320-32-1197, dated October 9, 1998, or Revision 01, dated February 11, 1999, has been accomplished; certificated in any category.
This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A319, A320, and A321 series airplanes, that requires modification of the electro-distributor for the nose wheel steering servo-control. This amendment is prompted by issuance of mandatory continuing airworthiness information by a foreign civil airworthiness authority. The actions specified by this AD are intended to prevent uncommanded nose landing gear wheel rotation, due to defective seals in the wheel steering selector valve of the hydraulic control unit for the nose landing gear, which could result in reduced controllability of the airplane.
