Airworthiness directives › 2017-26-09
AD 2017-26-09 Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Models named: ATR42-500, ATR72-212A. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to the airplanes identified in paragraphs (c)(1) and (c)(2) of this AD, certificated in any category. (1) ATR—GIE Avions de Transport Régional Model ATR42-500 airplanes; manufacturer serial number (MSN) 859, and MSNs 1001 through 1010 inclusive. (2) ATR—GIE Avions de Transport Régional Model ATR72-212A airplanes; MSN 988 and 989; MSNs 993 through 1000 inclusive, except MSN 996; and MSNs 1020 through 1142 inclusive, except MSNs 1071, 1135, 1139, 1140, and 1141.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 150 flight hours or 30 days, whichever occurs first after the effective date of this AD, accomplish a one-time inspection for damage of the left-hand (LH) and right-hand (RH) engine fire extinguishing pipes, in accordance with the Accomplishment Instructions of ATR Service Bulletin ATR42-26-0031, dated April 30, 2014; or ATR Service Bulletin ATR72-26-1027, dated April 30, 2014; as applicable.
Unsafe condition
This AD was prompted by a report of damage of an engine fire extinguishing pipe due to chafing between the pipe and a certain fastener assembly; the chafing occurred as a result of incorrect installation of the pipe. We are issuing this AD to detect and correct damage of the fire extinguishing pipes, which could generate a leak, resulting in the loss of available extinguishing agent and reduced capability to extinguish an engine fire.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1