Airworthiness Directive · Amendment 39-17448 · Rotors flight control
Agusta S.p.A. Helicopters
This AD applies to Agusta Model A119 and AW119 MKII helicopters, with pilot control box assembly (control box), part number (P/N) 109-0010-81-103, and co-pilot control box, P/N 109-0010-81-107, installed, certificated in any category.
We are superseding an existing airworthiness directive (AD) for Agusta S.p.A. (Agusta) Model A119 and AW119 MKII helicopters. The existing AD currently requires inspecting the pilot and copilot engine rotary variable differential transformer (RVDT) control box assemblies to determine if the control gear locking pin is in its proper position. Since we issued that AD, Agusta has developed a terminating action for this inspection. This AD requires the same actions as the existing AD as well as modifying the RVDT control box assemblies. The actions of this AD are intended to prevent failure of an RVDT control box assembly, loss of manual control of the engine throttle, and subsequent loss of control of the helicopter.
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 5 hours time-in-service (TIS), and thereafter at intervals not to exceed 50 hours TIS, remove the cover of the pilot and co-pilot RVDT control box assemblies and inspect the locking pins for proper position by following the Compliance Instructions, Parts I and II, paragraphs 2. through 4.1 for the pilot control box assembly and paragraphs 5. through 7.1 for the co-pilot control box assembly, of Agusta Bollettino Tecnico No. 119-39, Revision A, dated May 23, 2011.
(2) If during the inspection the locking pin is recessed or extended in excess of 2.0 millimeters from the face of the pin bore, or missing, before further flight, replace the RVDT control box with an airworthy RVDT control box that has been modified in accordance with paragraph (f)(3) of this AD.
(3) Within 8 months,
(i) Modify the pilot RVDT control box assembly, P/N 109-0010-81-103, by reference to Figures 1 through 7 and in accordance with the Compliance Instructions, Part III, paragraphs 5.1 through 5.16 of Agusta Bollettino Tecnico No. 119-39 Revision A, dated May 23, 2011; and
(ii) Modify the co-pilot RVDT control box assembly, P/N 109-0010-81-107, by reference to Figures 1 through 7 and in accordance with the Compliance Instructions, Part III, paragraphs 3.1 through 3.16 of Agusta Bollettino Tecnico No. 119-39, Revision A, dated May 23, 2011.
(4) Modifying the pilot and copilot RVDT control box assemblies in accordance with paragraph (f)(3) of this AD constitutes terminating action for the requirements 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
