34 results found (1890ms)
Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters
Unsafe Condition: Cracks in the main rotor spindle, which could result in loss of a main rotor blade and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters
Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters
Unsafe Condition: Failure of a rod end bearing assembly may result in the loss of a main rotor blade.
Why matched: Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters
Airworthiness Directives; Enstrom Helicopter Corporation Helicopters
Unsafe Condition: Failure of the cyclic trim system, which may lead to reduced controllability and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; Enstrom Helicopter Corporation Helicopters
Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-28C, F-28F, TH-28, 280, 280C, 280F, 280FX, 480, and 480B Helicopters
Unsafe Condition: Corrosion in the main rotor push-pull control rods (push-pull rods) can lead to pitting, internal moisture, or failure, potentially causing severe in-flight vibration and loss of control.
Why matched: Airworthiness Directives; Enstrom Helicopter Corporation Model F- 28A, F-28C, F-28F, TH-28, 280, 280C, 280F, 280FX, 480, and 480B Helicopters
Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B Helicopters
Unsafe Condition: Failure of a main rotor blade retention pin, leading to separation of the main rotor blade and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; Enstrom Helicopter Corporation Model F- 28, F-28A, F-28C, F-28C-2, F-28C-2R, F-28F, F-28F-R, 280, 280C, 280F, 280FX, TH-28, 480, and 480B Helicopters
Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX Helicopters
Unsafe Condition: Shaft failure in the main rotor transmission, which could lead to loss of control of the helicopter.
Why matched: Airworthiness Directives; Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28F, 280, 280C, 280F, and 280FX Helicopters
Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-28C, 280 and 280C Helicopters
Unsafe Condition: Failure of the Prestolite-manufactured voltage regulator, part number VSF7203, or over-voltage relays, part numbers X16799, X17621, or FOC-4002A, could result in an electrical overload and overheat...
Why matched: Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-28C, 280 and 280C Helicopters
Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28A, F-28C, F-28C-2, 280, and 280C Helicopters
Unsafe Condition: Failure of the upper and lower swashplate bearings and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28A, F-28C, F-28C-2, 280, and 280C Helicopters
Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters
Unsafe Condition: Failure of the main rotor transmission clutch assembly, leading to loss of control of the main rotor system and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Helicopters
Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28A, F-28C, F-28C2, F-28F, 280, 280C, 280F, and 280FX Series Helicopters
Unsafe Condition: Delamination and extrusion of the main rotor feathering elastomeric Lamiflex bearing (part numbers 28-14320-12 or 28-14320-15) causes loss of flight control system feedback dampening, leading to su...
Why matched: Airworthiness Directives; The Enstrom Helicopter Corporation Model F-28A, F-28C, F-28C2, F-28F, 280, 280C, 280F, and 280FX Series Helicopters
Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F-28C, F-28C-2, F-28F, 280C, 280F, and 280FX Series Helicopters
Unsafe Condition: Failure of the trim motor relay could result in full deployment of the trim system, high cyclic control forces, and loss of control of the helicopter.
Why matched: Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F-28C, F-28C-2, F-28F, 280C, 280F, and 280FX Series Helicopters
Airworthiness Directives: The Enstrom Helicopter Corporation Model F-28C, F-28C-2, F-28F, 280C, 280F, and 280FX Series Helicopters
Unsafe Condition: Cracked tail rotor spindles, part numbers 28-150064-11 or 28-150064-13, could fail leading to loss of directional control and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives: The Enstrom Helicopter Corporation Model F-28C, F-28C-2, F-28F, 280C, 280F, and 280FX Series Helicopters
Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28C2, F-28F, 280, 280C, 280F, and 280FX Helicopters
Unsafe Condition: Failure of the main rotor shaft due to composite-wrapping separation, corrosion, red color residue, or cracks could result in loss of the main rotor and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28C2, F-28F, 280, 280C, 280F, and 280FX Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Series Helicopters
Unsafe Condition: Loss of tail rotor thrust and directional control due to failure of five-plate flex-pack couplings (Dana Corp. P/N A005-1991) could result in substantial damage or loss of the helicopter.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F, and 280FX Series Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28F, F-28A, F-28C, F-28C-2, 280, and 280C Series Helicopters
Unsafe Condition: Tail rotor drive shaft coupling failure due to wear and improper hardness could result in loss of directional control and possible loss of the helicopter.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28F, F-28A, F-28C, F-28C-2, 280, and 280C Series Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F and 280FX Series Helicopters
Unsafe Condition: Loss of tail rotor thrust and directional control due to metal contaminants in the tail rotor gearbox containing spiral miter gear-set 'Boston Gear XR-137-2YR' and 'Boston Gear XR-137-2YL'.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28, F-28A, F-28C, F-28C-2, F-28F, 280, 280C, 280F and 280FX Series Helicopters
Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F28 Series Helicopters
Unsafe Condition: Cracks in the horizontal stabilizer attachments could result in failure and loss of control of the helicopter.
Why matched: Airworthiness Directives; THE ENSTROM HELICOPTER CORPORATION Model F28 Series Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Models F-28A and 280 Helicopters
Unsafe Condition: The possible loss of power to the main rotor due to insufficient thickness of the ring gear carrier lower web in main rotor gearboxes (P/N 28-13101) with specified serial numbers.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Models F-28A and 280 Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters
Unsafe Condition: Possible in-flight drivebelt clutch disengagement due to binding of the clutch actuating cable caused by lubricant hardening from engine heat.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters
Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters
Unsafe Condition: Wear damage to main rotor blade grips and shim misalignment could lead to possible failure of the main rotor blade grips.
Why matched: Airworthiness Directives; ENSTROM HELICOPTER CORPORATION Model F-28A, F-28C, F-28F, 280, 280C, and 280F Helicopters
Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters
Unsafe Condition: Tail rotor blade grip cracks can cause tail rotor failures.
Why matched: Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters
Airworthiness Directives; BENDIX: Applies to Bendix Starting Vibrator Assemblies, Part Numbers 10-176485-121, -122, -241, -242; 10-382780-12, -24
Unsafe Condition: Loss of ignition due to grounding of both 'P' (Primary) leads within the starting vibrator.
Why matched: Airworthiness Directives; BENDIX: Applies to Bendix Starting Vibrator Assemblies, Part Numbers 10-176485-121, -122, -241, -242; 10-382780-12, -24
Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters
Unsafe Condition: Damage to the turbocharger and possible engine power loss due to insufficient torque on the bearing housing flange attachment screws and improper installation of the induction system components.
Why matched: Airworthiness Directives; Enstrom Model F-28C and 280C Helicopters
Airworthiness Directives; Enstrom Model F28C and 280C Helicopters
Unsafe Condition: Improper idle mixture adjustment and internal injector leakage can cause RPM fluctuations and engine stoppage during flight, leading to loss of engine power.
Why matched: Airworthiness Directives; Enstrom Model F28C and 280C Helicopters
Airworthiness Directives; Enstrom Model F28, F28A, F28C, 280 and 280C Helicopters
Unsafe Condition: Tail rotor spindle P/N 28-15202 may fail due to fatigue cracking, leading to loss of tail rotor control.
Why matched: Airworthiness Directives; Enstrom Model F28, F28A, F28C, 280 and 280C Helicopters