Airworthiness Directive · Amendment 39-18057 · Electrical routing
ATR-GIE Avions de Transport Régional Airplanes
This AD applies to ATR—GIE Avions de Transport Régional airplanes, certificated in any category, as identified in paragraph (c)(1) and (c)(2) of this AD.
(1) Model ATR42-500 airplanes, manufacturer serial numbers 669 through 1005 inclusive.
(2) Model ATR72-212A airplanes, manufacturer serial numbers 773, 774, 776 through 1094 inclusive, 1096 through 1099 inclusive, and 1101.
We are adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 airplanes, and Model ATR72-212A airplanes. This AD was prompted by a report that, during an inspection of an airplane on the production line, interference was detected between the electrical harness and a bonding lead due to an incorrect installation of the affected bonding lead. This AD requires a detailed inspection for damage or incorrect routing of the bonding lead routing above the 120VU shelf, and if any damage or incorrect routing is found, repairing damage or modifying the bonding lead routing. We are issuing this AD to detect and correct installation of the bonding lead, which could cause arcing and chafing, and could possibly result in an uncontrolled fire.
Within 1,000 flight hours after the effective date of this AD: Do a detailed inspection of the bonding lead routing above the 120VU shelf for damage (i.e., wire chafing, evidence of burning) or incorrect routing, in accordance with the Accomplishment Instructions of ATR Service Bulletin ATR42-92-0025, dated November 7, 2013 (for Model ATR42-500 airplanes); or ATR Service Bulletin ATR72-92-1034, dated November 7, 2013 (for Model ATR72-212A airplanes).
(1) If, during the inspection required by paragraph (g) of this AD, any incorrect routing is found: Before further flight, modify the bonding lead routing above the 120VU shelf, in accordance with the Accomplishment Instructions of ATR Service Bulletin ATR42-92-0025, dated November 7, 2013 (for Model ATR42-500 airplanes); or ATR Service Bulletin ATR72-92-1034, dated November 7, 2013 (for Model ATR72-212A airplanes).
(2) If, during the inspection required by paragraph (g) of this AD, any damage (i.e., wire chafing, evidence of burning) is found: Before further flight, repair using a method approved by the Manager, International Branch, ANM-116, Transport Airplane Directorate, FAA.
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.
