Airworthiness Directive · Amendment 39-17381 · Air conditioning
Airbus Airplanes
This AD applies to the Airbus airplanes identified in paragraphs (c)(1), (c)(2), and (c)(3) of this AD, certificated in any category.
(1) Model A330-201, -202, -203, -223, -243, -301, -302, -303, -321, -322, -323, -341, -342, and -343 airplanes, all manufacturer serial numbers, except for airplanes on which Airbus modification 201500 has been embodied in production.
(2) Model A330-223F and -243F airplanes, all manufacturer serial numbers, except for airplanes on which Airbus modification 201681 has been embodied in production.
(3) Model A340-211, -212, -213, -311, -312, and -313 airplanes, all manufacturer serial numbers.
We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200, -300, and -200 Freighter series airplanes; and all Airbus Model A340-200 and -300 series airplanes. This AD was prompted by a determination that the bonding lead from a certain isolation valve to a frame was too close to an electrical harness, which might cause chafing between the electrical harness and the associated bonding lead. This chafing could lead to a short circuit of the isolation valve and consequent non-closure of the isolation valve, which would prevent the air flow to be shut off in case of fire. This AD requires modifying the bonding lead installation of the isolation valve. We are issuing this AD to prevent such chafing, which could result in non-closure of the isolation valve in the event of a fire and consequent damage to the airplane and injury to its occupants.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 48 months after the effective date of this AD, modify the bonding lead installation of isolation valve 283HN, in accordance with the Accomplishment Instructions of the applicable service bulletin specified in paragraph (g)(1), (g)(2), or (g)(3) of this AD.
(1) Airbus Mandatory Service Bulletin A330-21-3165, Revision 03, dated December 7, 2012 (for Model A330-201, -202, -203, -223, -243, -301, -302, -303, -321, -322, -323, -341, -342, and -343 airplanes).
(2) Airbus Mandatory Service Bulletin A330-21-3160, dated August 4, 2011 (for Model A330-223F and -243F airplanes).
(3) Airbus Mandatory Service Bulletin A340-21-4152, Revision 03, dated December 7, 2012 (for Model A340-211, -212, -213, -311, -312, and -313 airplanes).
For airplanes that have already been modified prior to the effective date of this AD, as specified in Airbus Mandatory Service Bulletin A330-21-3165, dated September 27, 2011, or Mandatory Service Bulletin A330-21-3165, Revision 01, dated November 21, 2011; or Airbus Mandatory Service Bulletin A340-21-4152, dated September 27, 2011, or Airbus Mandatory Service Bulletin A340-21-4152, Revision 01, dated November 21, 2011: Within 48 months after the effective date of this AD, perform the “Additional Work” specified in the Accomplishment Instructions of Airbus Mandatory Service Bulletin A330-21-3165, Revision 03, dated December 7, 2012; or Airbus Mandatory Service Bulletin A340-21-4152, Revision 03, dated December 7, 2012; as applicable.
