Airworthiness Directive · Amendment 39-11554 · Airbus Model A319, A320, and A321 Series Airplanes
Airbus Model A319, A320, and A321 Series Airplanes
Model A319, A320, and A321 series airplanes; as listed in Airbus Service Bulletin A320-24-1092, Revision 03, dated September 16, 1998; certificated in any category.
Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in accordance with paragraph (c) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
This amendment supersedes an existing airworthiness directive (AD), applicable to certain Airbus Model A319, A320, and A321 series airplanes, that currently requires relocation of the engine/master 1 relay from relay box 103VU to shelf 95VU in the avionics bay. This amendment continues to require the relocation using new electrical contacts, and, for certain airplanes, adds a requirement to replace certain contacts installed in shelf 95VU during relocation of the relay with new contacts. 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 a simultaneous cutoff of the fuel supply to both engines, which could result in a loss of engine power and consequent reduced controllability of the airplane.
To prevent a simultaneous cutoff of the fuel supply to both engines, which could result in a loss of engine power and consequent reduced controllability of the airplane, accomplish the following:
(a) Within 18 months after October 27, 1998 (the effective date of AD 98-20-10, amendment 39-10777), relocate the engine/master 1 relay (11QG) from relay box 103VU to shelf 95VU in the avionics bay, in accordance with Airbus Service Bulletin A320-24-1092, dated March 26, 1997; Revision 01, dated December 24, 1997; Revision 02, dated March 9, 1998; or Revision 03, dated September 16, 1998. After the effective date of this AD, only Revision 03 shall be used.
(b) For airplanes on which Airbus Service Bulletin A320-24-1092, dated March 26, 1997; Revision 01, dated December 24, 1997; or Revision 02, dated March 9, 1998; has been accomplished prior to the effective date of this AD: Within 500 flight hours after the effective date of this AD, replace the contacts on lines 20 through 23 in shelf 95VU with new contacts, in accordance with paragraph B.(2)(m) of the Accomplishment Instructions of Airbus Service Bulletin A320-24-1092, Revision 03, dated September 16, 1998.
