Airworthiness Directive · Amendment 39-18004 · Wiring elements
Airbus Airplanes
This AD applies to the Airbus airplanes identified in paragraphs (c)(1) and (c)(2) 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, on which Airbus Modification 48825 has been embodied in production; except for airplanes on which Airbus Modification 52485, 40161, or 201669 has been embodied.
(2) Model A340-211, -212, -213, -311, -312, and -313 airplanes, all manufacturer serial numbers, on which Airbus Modification 48825D42865 has been embodied in production; except for airplanes on which Airbus Modification 55606 or 40161 has been embodied.
We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 and -300 series airplanes, and Model A340-200 and -300 series airplanes. This AD was prompted by a report of contact between certain electrical harnesses and the hatrack rod that could cause chafing between the harnesses and surrounding structure. This AD requires modifying the routing of certain electrical harnesses. We are issuing this AD to prevent chafing and possible short circuit of two oxygen chemical generator containers in different wiring routes, which could result in malfunction of the electrical opening of all the containers connected to these routes. Such conditions, during a sudden depressurization event, could result in lack of oxygen and consequent injuries to airplane occupants.
Within 24 months after the effective date of this AD: Modify the routing of electrical harnesses 1523VB on the left-hand side and 1524VB on the right-hand side, at the level of the door 3 area between frames 53.6 and 53.8, and between stringers 14 and 15, in accordance with the Accomplishment Instructions of Airbus Service Bulletin A330-92-3098 or A340-92-4084, both dated January 11, 2013, as applicable.
