Airworthiness Directive · Amendment 39-21258 · Extinguishing system
Leonardo S.p.a. Helicopters
This AD applies to Leonardo S.p.a. Model A109E, A109S, and AW109SP helicopters, certificated in any category, with a fire extinguisher bottle part number (P/N) 27300-1 installed.
Note 1 to paragraph (a): Fire extinguisher bottle P/N 27300-1 may be installed as part of fire extinguisher kit P/N 109-0811-39-103, P/N 109-0811-39-107, or P/N 109-0811-39-109.
The FAA is adopting a new airworthiness directive (AD) for Leonardo S.p.a. (Leonardo) Model A109E, A109S, and AW109SP helicopters. This AD requires inspecting each fire extinguisher bottle for a crack. This AD was prompted by a report of a cracked fire extinguisher bottle. The actions of this AD are intended to address an 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.
(1) Within 25 hours time-in-service (TIS) and thereafter at intervals not to exceed 200 hours TIS, using a mirror and a light, inspect the weld beads of each fire extinguisher bottle bypass outlet assembly for a crack in the areas depicted in Figure 2 of Leonardo Helicopters Bollettino Tecnico (BT) No. 109EP-152, BT No. 109S-073, or BT No. 109SP-108, each dated December 15, 2016, or Alert Service Bulletin No. 109S-073 Revision A, dated November 23, 2018, as applicable to your model helicopter. Pay particular attention to each circled area. If there is a crack, before further flight, replace the fire extinguisher bottle.
(2) After the effective date of this AD, do not install a fire extinguisher bottle P/N 27300-1 on any helicopter unless it has been inspected as required by paragraph (e)(1) of this AD.
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
