2023-11-07
final ruleAirworthiness Directives; Various Helicopters
Unsafe Condition: unsafe condition on these products.
Why matched: Airworthiness Directives; Various Helicopters
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19 results found (2212ms)
2022-05-10 Recurring
final ruleAirworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
Unsafe Condition: The overload clutch in the Goodrich externally-mounted hoist assemblies can fail, leading to in-flight loss of the hoist load, possibly resulting in injury to persons on the ground or in a hoisting...
Why matched: Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies
2021-22-11 Recurring
final ruleAirworthiness Directives; MD Helicopters Inc. (MDHI) Helicopters
Unsafe Condition: A report of a spiral crack in the pilot-to-copilot tail rotor torque tube (torque tube) that appears to have originated from a hole where the tail rotor torque tube control fitting attaches to the ...
Why matched: Airworthiness Directives; MD Helicopters Inc. (MDHI) Helicopters
2020-18-20
final ruleAirworthiness Directives; MD Helicopters Inc. (MDHI), Helicopters
Unsafe Condition: Reports of leading edge abrasion strips manufactured by HTC departing the MR blades during flight. An investigation determined that the abrasion strips were manufactured from electroformed nickel, ...
Why matched: Airworthiness Directives; MD Helicopters Inc. (MDHI), Helicopters
2020-06-11
final ruleAirworthiness Directives; MD Helicopters Inc. Helicopters
Unsafe Condition: a link assembly remaining in service beyond its fatigue life, which could result in failure of the link assembly, failure of M/R blade pitch control, and subsequent loss of helicopter control.
Why matched: Airworthiness Directives; MD Helicopters Inc. Helicopters
2016-04-15
final ruleAirworthiness Directives; MD Helicopters Inc., Helicopters
Unsafe Condition: A pin remaining in service beyond its fatigue life, which could result in failure of a pin, loss of a main rotor blade, and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; MD Helicopters Inc., Helicopters
2016-01-19
final ruleAirworthiness Directives; MD Helicopters Inc.
Unsafe Condition: Rotating cone assembly remaining in service beyond its fatigue life, which could result in failure of the rotating cone assembly and loss of control of the helicopter.
Why matched: Airworthiness Directives; MD Helicopters Inc.
2007-05-51
final ruleAirworthiness Directives; MD Helicopters Inc. (MDHI) Model MD600N Helicopters
Unsafe Condition: Cracks in the lateral mixer output link assembly (mixer link), specifically in the bearing end area, emanating from staking marks, could result in failure of the mixer link and subsequent loss of c...
Why matched: Airworthiness Directives; MD Helicopters Inc. (MDHI) Model MD600N Helicopters
2004-16-08
final ruleAirworthiness Directives; MD Helicopters Inc. Model MD900 Helicopters
Unsafe Condition: Fatigue failure of the piston rod in the spring capsule of the control rod assembly, which could result in failure of the piston rod and subsequent loss of control of the helicopter.
Why matched: Airworthiness Directives; MD Helicopters Inc. Model MD900 Helicopters
2002-10-05
final ruleAirworthiness Directives; MD Helicopters Inc. Model MD-900 Helicopters
Unsafe Condition: Cracks starting at the drive plate attachment holes in the main rotor upper hub assembly drive plate attachment flange have been reported, which could lead to failure of the hub assembly, loss of d...
Why matched: Airworthiness Directives; MD Helicopters Inc. Model MD-900 Helicopters
2001-07-09
final ruleAirworthiness Directives; MD Helicopters Inc. Model MD-900 Helicopters
Unsafe Condition: Failure of the hub assembly, loss of drive to the main rotor, and subsequent loss of control of the helicopter due to cracked main rotor upper hub assembly drive plate attachment flange.
Why matched: Airworthiness Directives; MD Helicopters Inc. Model MD-900 Helicopters
2000-10-06
final ruleAirworthiness Directives; MD Helicopters Inc. Model MD900 Helicopters
Unsafe Condition: Drive shafts with no assembly part number marked could remain in service past their life limit, leading to fatigue failure and total loss of drive to the main rotor hub, resulting in loss of contro...
Why matched: Airworthiness Directives; MD Helicopters Inc. Model MD900 Helicopters
2000-08-22 Recurring
final ruleAirworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 500N, and 600N Helicopters
Unsafe Condition: Erroneous turbine outlet temperature (TOT) readings and incorrect wiring harness terminal lugs on the thermocouple wiring, which could lead to an erroneous TOT indication, damage to critical engine...
Why matched: Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 500N, and 600N Helicopters
2000-04-21
final ruleAirworthiness Directives; MD Helicopters Inc. Model MD600N Helicopters
Unsafe Condition: Fuel hose connections between the fuel cells and the engine can be incorrectly installed, leading to fuel starvation of the engine while the fuel gage indicates fuel remaining in the tank, engine f...
Why matched: Airworthiness Directives; MD Helicopters Inc. Model MD600N Helicopters
Amdt-39-11564
final ruleAirworthiness Directives; MD Helicopters Inc. Model 500N and 600N Helicopters
Unsafe Condition: Stress corrosion cracks in the thruster control cable conduit cap may lead to failure of the cap, causing a fixed thruster condition and subsequent loss of normal anti-torque directional control.
Why matched: Airworthiness Directives; MD Helicopters Inc. Model 500N and 600N Helicopters
99-25-08
final ruleAirworthiness Directives; MD Helicopters Inc. Model 500N and 600N Helicopters
Unsafe Condition: Stress corrosion cracks in the thruster control cable conduit cap at the telescopic swivel end and relieved area could cause failure of the cap, leading to a fixed thruster condition and subsequent...
Why matched: Airworthiness Directives; MD Helicopters Inc. Model 500N and 600N Helicopters
99-20-12
final ruleAirworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters
Unsafe Condition: Failure of the oil cooler blower bracket (P/N 369F5190-1) could result in loss of cooling of engine oil and transmission oil, leading to a subsequent forced landing.
Why matched: Airworthiness Directives; MD Helicopters Inc. Model 369D, 369E, 369FF, 500N, and 600N Helicopters
Amdt-39-11342
final ruleAirworthiness Directives; MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N Helicopters
Unsafe Condition: Cracked oil cooler blower bracket may lead to failure of the bracket, loss of cooling for engine oil and transmission oil, and subsequent forced landing.
Why matched: Airworthiness Directives; MD Helicopters Inc. Model 369D, D369E, 369FF, 500N, and 600N Helicopters
98-14-03
final ruleAirworthiness Directives; AlliedSignal Inc. KT 76A Air Traffic Control (ATC) Transponders.
Unsafe Condition: The inability of AlliedSignal Inc. KT 76A ATC transponders to coordinate with ground-based ATC radar sites and nearby TCAS-equipped aircraft, caused by silver migration in resistor network modules ...
Why matched: Airworthiness Directives; AlliedSignal Inc. KT 76A Air Traffic Control (ATC) Transponders.