Airworthiness Directive · Amendment 39-21557 · Tail rotor control system
Leonardo S.p.a. (Type Certificate Previously Held by Agusta S.p.A.) Helicopters
This AD applies to Leonardo S.p.a. (Type Certificate previously held by Agusta S.p.A.) Model A109A and A109A II helicopters, certificated in any category, with a slider assembly pitch control (slider) part number (P/N) 109-0130-11-7 installed, except those sliders marked with an “R” after the serial number.
The FAA is superseding Airworthiness Directive (AD) 2015-25-04 for Agusta S.p.A (now Leonardo S.p.a.) Model A109A and A109A II helicopters. AD 2015-25-04 required inspecting the slider assembly pitch control (slider) for play and replacing the slider if the play exceeds certain limits. This AD was prompted by further investigation that led to the determination that the play was caused by a manufacturing issue. This AD retains certain requirements of AD 2015- 25-04, requires replacing certain part-numbered sliders as a terminating action for the inspections, and prohibits installing the affected part on any helicopter. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 25 hours time-in-service (TIS) after the effective date of this AD, and thereafter at intervals not to exceed 25 hours TIS, inspect the slider for play. If there is play greater than 2.3 millimeters (0.09 inch), before further flight, replace the slider with a slider P/N 109-0130-11-7 with suffix “R” marked after the serial number.
(2) Within 800 hours TIS after the effective date of this AD, if not previously required per paragraph (g)(1) of this AD, replace slider P/N 109-0130-11-7 with slider P/N 109-0130-11-7 with suffix “R” marked after the serial number.
(3) Installing slider P/N 109-0130-11-7 with suffix “R” marked after the serial number is a terminating action for the repetitive inspections required by paragraph (g)(1) of this AD.
(4) As of the effective date of this AD, do not install slider P/N 109-0130-11-7 on any helicopter unless the slider is marked with suffix “R” after the serial number.
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
