Airworthiness Directive · Amendment 39-18754 · Extinguishing system
Airbus Helicopters
This AD applies to Airbus Helicopters Model AS355NP helicopters, certificated in any category, with an Arrius 1A1 fire extinguishing system installed.
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model AS355NP helicopters. This AD requires removing and installing the fire extinguishing system pipes. This AD is prompted by the discovery that the left-hand and right-hand fire extinguishing discharge systems were incorrectly connected. The actions of this AD are intended to correct the unsafe condition on these products.
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Within 600 hours time-in-service or at the next annual inspection, whichever occurs first, remove and install the fire extinguishing system pipes, and remove any placards on the instrument panel if installed, in accordance with the Accomplishment Instructions, paragraph 3.B. and 3.B.1 through 3.B.2, of Airbus Helicopters Alert Service Bulletin No. AS355-26.00.10, Revision 0, dated July 2, 2015.
Note 1 to paragraph (e) of this AD: Airbus Helicopters identifies Alert Service Bulletin No. AS355-26.00.10, Revision 0, dated July 2, 2015, as mod 073990.
