Airworthiness Directive · Amendment 39-18404 · Electrical routing
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to the ATR-GIE Avions de Transport Régional airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category.
(1) Model ATR42-500 airplanes, serial numbers 443 through 1006 inclusive, and 1014; except serial numbers 811, 1002, and 1005.
(2) Model ATR72-102, -202, -212, and -212A airplanes, serial numbers 475 through 969 inclusive, 971 through 988 inclusive, 1025, 1028 through 1069 inclusive, 1072, and 1089 through 1175 inclusive; except serial numbers 872, 887, 893, 956, 1042, and 1162.
We are adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 airplanes, and Model ATR72-102, -202, -212, and -212A airplanes. This AD was prompted by a report of chafed wires between electrical harnesses. This AD requires inspections for wire discrepancies, and corrective actions if necessary. We are issuing this AD to detect and correct damaged wiring and incorrect installation of the wiring harness and adjacent air ducts that could lead to wire harness chafing and arcing, possibly resulting in an on-board fire.
Within 500 flight hours after the effective date of this AD, do the actions specified in paragraphs (g)(1) and (g)(2) of this AD, in accordance with the Accomplishment Instructions of Avions de Transport Régional Service Bulletin ATR42-92-0024, Revision 03, dated January 21, 2015; and Avions de Transport Régional Service Bulletin ATR72-92-1032, Revision 03, dated January 21, 2015; as applicable.
(1) Do a general visual inspection for damage of the electrical wires of harnesses 2M-2S-6M.
(2) Do a general visual inspection for correct routing of electrical bundle 2M-2S-6M, and correct routing of the air duct.
(1) If, during the inspection required by paragraph (g)(1) of this AD, any damage is found on the electrical wires: Before further flight, repair the wires, in accordance with the Accomplishment Instructions of Avions de Transport Régional Service Bulletin ATR42-92-0024, Revision 03, dated January 21, 2015; and Avions de Transport Régional Service Bulletin ATR72-92-1032, Revision 03, dated January 21, 2015; as applicable.
(2) If, during the inspection required by paragraph (g)(2) of this AD, electrical bundle 2M-2S-6M and/or an air duct is found to be incorrectly routed: Within 500 flight hours after the effective date of this AD, do a general visual inspection for correct positioning of the bracket, in accordance with the Accomplishment Instructions of Avions de Transport Régional Service Bulletin ATR42-92-0024, Revision 03, dated January 21, 2015; and Avions de Transport Régional Service Bulletin ATR72-92-1032, Revision 03, dated January 21, 2015; as applicable.
(i) If, during the inspection required by paragraph (h)(2) of this AD, the bracket is found to be correctly positioned: Within 500 flight hours after the effective date of this AD, do all applicable corrective actions, in accordance with the Accomplishment Instructions of Avions de Transport Régional Service Bulletin ATR42-92-0024, Revision 03, dated January 21, 2015; and Avions de Transport Régional Service Bulletin ATR72-92-1032, Revision 03, dated January 21, 2015; as applicable.
(ii) If, during the inspection required by paragraph (h)(2) of this AD, the bracket is found to be missing or incorrectly positioned: Within 500 flight hours after the inspection required by paragraph (h)(2) of this AD, repair using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA; or the European Aviation Safety Agency (EASA); or ATR-GIE Avions de Transport Régional's EASA Design Organization Approval (DOA).
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
