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Each collection by its own date: when an AD took effect, an SDR’s difficulty date, an accident’s or incident’s event date.

Proposed ADs · 11

NPRM 2002-SW-19-ADBell Helicopter Textron CanadaAirworthiness Directives; Bell Helicopter Textron Canada Limited Model 427 HelicoptersPublished Oct 18, 2002NPRM 2001-SW-43-ADBell Helicopter Textron CanadaAirworthiness Directives; Bell Helicopter Textron Canada Model 427 HelicoptersPublished Nov 28, 2001NPRM FAA-2010-0866Bell Helicopter Textron Canada…Tail rotor driveshaft hanger bearing bracket part number (P/N) 427-044-223-101 has been…Published Aug 30, 2010NPRM 2001-SW-43-ADBell Helicopter Textron CanadaAirworthiness Directives; Bell Helicopter Textron Canada Limited Model 427 HelicoptersPublished Oct 18, 2002NPRM FAA-2009-0227Bell Helicopter Textron CanadaAirworthiness Directives; Bell Helicopter Textron Canada Model 427 HelicoptersPublished Mar 23, 2009NPRM FAA-2012-0084Bell Helicopter Textron Canada…Bell Helicopter Textron Canada Limited (BHTC) Model 427 helicopters. This proposed AD is prompted by a…Published Feb 3, 2012NPRM FAA-2017-1105Bell Helicopter Textron Canada…for Bell Helicopter Textron Canada (BHTC) Model 427 helicopters. This proposed AD would require inspecting the…Published Jun 1, 2018NPRM FAA-2025-1727Bell Textron Canada…certain Bell Textron Canada Limited (Bell) Model 427 helicopters. This proposed AD was prompted by a…Published Aug 5, 2025NPRM FAA-2013-0400Bell Helicopter Textron Canada…206L-4, 222, 222B, 222U, 230, 407, 427, and 430 helicopters. This proposed AD would require…Published May 13, 2013NPRM FAA-2021-0539Bell Textron Canada…206L-4, 222, 222B, 222U, 230, 407, 427, 429, and 430 helicopters. This proposed AD would…Published Jul 6, 2021NPRM FAA-2014-0643Bell Helicopter Textron Canada…for Bell Model 206L-4, 407, and 427 helicopters. AD 2001-13-51 currently requires inspecting…Published Sep 15, 2014