2025-15-02
final ruleAirworthiness Directives; Siam Hiller Holdings, Inc.
Unsafe Condition: unsafe condition on these products.
Effective: Sep 24, 2025
Category: aircraft
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114 results found (1158ms)
2000-24-21
final ruleAirworthiness Directives; Siam Hiller Holdings, Inc. Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, UH-12E-L, UH-12L, and UH-12L4 Helicopters
Unsafe Condition: This amendment adopts a new airworthiness directive (AD), for Siam Hiller Holdings, Inc. (Hiller), formerly Rogerson Hiller Corporation, Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, UH- 12E...
Effective: Jan 10, 2001
Category: aircraft
Why matched: Airworthiness Directives; Siam Hiller Holdings, Inc. Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, UH-12E-L, UH-12L, and UH-12L4 Helicopters
97-20-15
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: Outboard Tension-Torsion Bar Pin
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
97-20-15
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: Outboard Tension-Torsion Bar Pin
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
97-20-15
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: Outboard Tension-Torsion Bar Pin
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
97-20-15
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: Outboard Tension-Torsion Bar Pin
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
97-20-15
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: Outboard Tension-Torsion Bar Pin
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Amdt-39-10151
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH- 12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: could result in loss of in-plane stability of the main rotor blade and subsequent loss of control of the helicopter.
Effective: Nov 12, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH- 12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
97-10-16
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: Blade Spar Tube and Cuff Inspection
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Amdt-39-10029 Recurring
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH- 12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H- 23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Unsafe Condition: This amendment supersedes an existing airworthiness directive (AD), applicable to Hiller Aircraft Corporation Model UH-12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H-23C, H-23D...
Effective: Jun 27, 1997
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH- 12, UH-12A, UH-12B, UH-12C, UH-12D, UH-12E, CH-112, H-23A, H-23B, H- 23C, H-23D, H-23F, HTE-1, HTE-2, and OH-23G Helicopters
Amdt-39-9252
final ruleAirworthiness Directives; Hiller Aircraft Corporation Model UH- 12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
Unsafe Condition: could result in loss of in-plane stability of the main rotor blade and subsequent loss of control of the helicopter.
Effective: Jun 23, 1995
Category: aircraft
Why matched: Airworthiness Directives; Hiller Aircraft Corporation Model UH- 12A, UH-12B, UH-12C, UH-12D, and UH-12E Helicopters
90-15-01
final ruleAirworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
Unsafe Condition: Tail Rotor Blade Assemblies
Effective: Mar 7, 1991
Category: aircraft
Why matched: Airworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
90-15-01
final ruleAirworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
Unsafe Condition: Tail Rotor Blade Assemblies
Effective: Mar 7, 1991
Category: aircraft
Why matched: Airworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
90-15-01
final ruleAirworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
Unsafe Condition: Tail Rotor Blade Assemblies
Effective: Mar 7, 1991
Category: aircraft
Why matched: Airworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
90-15-01
final ruleAirworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
Unsafe Condition: Tail Rotor Blade Assemblies
Effective: Mar 7, 1991
Category: aircraft
Why matched: Airworthiness Directives; ROGERSON HILLER CORPORATION (HILLER, FAIRCHILD HILLER) Model UH-12E, UH-12E-L, UH-12L, and UH-12L4 Series Helicopters
90-19-01
final ruleAirworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
Unsafe Condition: Rudder Pedal Support
Effective: Oct 15, 1990
Category: aircraft
Why matched: Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
90-19-01
final ruleAirworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
Unsafe Condition: Rudder Pedal Support
Effective: Oct 15, 1990
Category: aircraft
Why matched: Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
90-19-01
final ruleAirworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
Unsafe Condition: Rudder Pedal Support
Effective: Oct 15, 1990
Category: aircraft
Why matched: Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
90-19-01
final ruleAirworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
Unsafe Condition: Rudder Pedal Support
Effective: Oct 15, 1990
Category: aircraft
Why matched: Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
90-19-01
final ruleAirworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)
Unsafe Condition: Rudder Pedal Support
Effective: Oct 15, 1990
Category: aircraft
Why matched: Airworthiness Directives; PILATUS AIRCRAFT, LTD. AND FAIRCHILD-HILLER Model PC-6 series airplanes manufactured by Pilatus Aircraft, Ltd., (Serial Number (S/N) 1 through 824), and to Model PC-6 airplanes manufactured by Fairchild-Hiller (S/N 2001 and up)