Sikorsky S-76C-2 Airworthiness Directives

Every AD in the library whose text names the Sikorsky S-76C-2, of which 6 are registered in the US.

17 not superseded, 5 of them with a repeat action. 19 listed in all, newest published August 5, 2020.

Published sinceHide 2 supersededOnly repeat actions17 of 19

2019-19-12Sikorsky Aircraft Corporation HelicoptersRotorcraftSupersedes 2018-10-07Repeat actionOct 4, 2019
2015-26-10Requires inspecting the main gearbox (MGB) lower housing jet bores for leaks, paint or caulk blistering, and liner protrusionMain rotor gearbox · RotorcraftRepeat actionJan 5, 2016
2010-17-16Requires an initial and recurring inspections of the tail rotor vertical stabilizer aft spar assembly (aft spar assembly) for a crack, loose or working fasteners, and corrosion, and, if any are found, further...Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters · RotorcraftRepeat actionSep 13, 2010
2001-03-51Sikorsky Aircraft Corporation Model S-76B and S-76C HelicoptersRotorcraftRepeat actionMar 6, 2001
2001-01-04Requires initial and repetitive inspections of the main landing gear positioning rod assembly (rod assembly) and the side brace rod end (rod end) for corrosionSikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C Helicopters · RotorcraftRepeat actionJan 18, 2001
2020-15-17Requires updating the remote data acquisition unit (RDAU) software and re-identifying the RDAU and, for certain helicopters, updating the software of the display unit (DU) and re- identifying the DUIndicating/recording system · RotorcraftAug 5, 2020
2017-19-01Requires inspecting the main rotor (M/R) servo pushrod (pushrod) assembly and applying slippage marksRotorcraft flight control · RotorcraftNov 28, 2017
2015-19-51Requires inspecting the main rotor (M/R) and tail rotor (T/R) pushrod assemblies and the jamnuts, and applying slippage marks across the pushrod tubes and jamnutsFlight control system · RotorcraftOct 26, 2015
2015-04-05Requires inspecting the tail rotor drive shaft (TDS) flange-to-shaft attachment hardware for correct assembly and correct torque of the fastenersTail rotor drive shaft · RotorcraftFeb 25, 2015
2013-22-15Requires replacing the cracked partMain rotor head · RotorcraftNov 8, 2013
2012-22-13Requires installing an improved throttle stop and a wider trigger on the engine control levers (ECL)Engine controls · RotorcraftNov 15, 2012
2010-06-08Sikorsky Aircraft Corporation Model S-76C HelicoptersRotorcraftMar 17, 2010
2002-21-07Requires removing and inspecting each main rotor spindle attachment bolt (bolt) to ensure that the correct bolts are installedSikorsky Aircraft Corporation Model S-76A, S-76B and S-76C Helicopters · RotorcraftOct 21, 2002
2001-25-06Sikorsky Aircraft Corporation Model S-76B and S-76C HelicoptersRotorcraftDec 20, 2001
2001-10-06Sikorsky Aircraft Corporation Model S-76A, S-76B, and S-76C HelicoptersRotorcraftSupersedes 2000-23-52May 17, 2001
99-07-01Sikorsky Aircraft Corporation (Sikorsky) Model S-76C HelicoptersRotorcraftSupersedes 99-05-01Mar 23, 1999
99-01-09Sikorsky Aircraft Corporation Model S- 76C HelicoptersRotorcraftFeb 16, 1999

Listed by the model designations in each AD's text. An AD written for a part number, or for "all" engines of a maker, may name no model and so not appear here: search the library for the part or the maker as well.