Search FAA Documents

647 results found (1771ms)

Sort by: Date AD Number

2025-17-11 Recurring

final rule

Airworthiness Directives; MD Helicopters, LLC

Unsafe Condition: Cracked tail rotor (T/R) pedal support brackets, specifically magnesium cast brackets with part numbers 369A7505-7, 369A7505-8, 369A7505-14, or 369A7505-15, and aluminum cast brackets with part num...

Effective: Oct 10, 2025 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; MD Helicopters, LLC

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2024-23-06 Recurring

final rule

Airworthiness Directives; MD Helicopters, LLC, Helicopters

Unsafe Condition: Seized and damaged roller bearing in the torque tube assembly, which could result in reduced controllability and subsequent loss of control of the helicopter.

Effective: Dec 24, 2024 Category: aircraft Compliance: Within 100 hours time-in-service (TIS) or within one year after the effective date of this AD, wh...

Why matched: Airworthiness Directives; MD Helicopters, LLC, Helicopters

2024-20-07 Recurring

final rule

Airworthiness Directives; Various Helicopters

Unsafe Condition: Difficulty pulling the emergency float kit activation handle installed on the pilot cyclic, and deficiencies in the installation of the cables on the emergency float kits.

Effective: Dec 5, 2024 Category: aircraft Compliance: Within 50 flight hours

Why matched: Airworthiness Directives; Various Helicopters

2023-11-07

final rule

Airworthiness Directives; Various Helicopters

Unsafe Condition: unsafe condition on these products.

Effective: Jun 22, 2023 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; Various Helicopters

2022-05-10 Recurring

final rule

Airworthiness 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...

Effective: Apr 20, 2022 Category: aircraft Compliance: Within 12 months of effective date

Why matched: Airworthiness Directives; Goodrich Externally-Mounted Hoist Assemblies

2021-22-11 Recurring

final rule

Airworthiness 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 ...

Effective: Jan 10, 2022 Category: aircraft Compliance: Within 100 hours TIS after the effective date of this AD, or within 5 hours TIS or 30 days after ...

Why matched: Airworthiness Directives; MD Helicopters Inc. (MDHI) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2017-17-03 Recurring

final rule

Airworthiness Directives; Airbus SAS Airplanes

Unsafe Condition: cracking of the pocket radius, which could lead to in-flight decompression of the airplane and possible injury to the passengers.

Effective: Oct 5, 2021 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; MD Helicopters, Inc., Helicopters

2020-18-20

final rule

Airworthiness 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, ...

Effective: Oct 28, 2020 Category: aircraft Compliance: Within 10 hours TIS and thereafter before the first flight of each day until the abrasion strip h...

Why matched: Airworthiness Directives; MD Helicopters Inc. (MDHI), Helicopters

2020-11-07

final rule

Airworthiness Directives; MD Helicopter Inc., Helicopters

Unsafe Condition: Failure of a bolt, which could result in loss of an M/R blade and subsequent loss of control of the helicopter.

Effective: Jun 30, 2020 Category: aircraft Compliance: Within 3 months of the effective date of this AD, or at the next overhaul of the M/R assembly, wh...

Why matched: Airworthiness Directives; MD Helicopter Inc., Helicopters

2020-06-11

final rule

Airworthiness 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.

Effective: Apr 28, 2020 Category: aircraft Compliance: Within 100 hours time-in-service (TIS)

Why matched: Airworthiness Directives; MD Helicopters Inc. Helicopters

Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

2019-05-04

final rule

Airworthiness Directives; MD Helicopters, Inc. (MDHI), Helicopters

Unsafe Condition: a crack in an MRB

Effective: Apr 17, 2019 Category: aircraft Compliance: Within 25 hours time-in-service, and thereafter at each 100-hour inspection or annual inspection,...

Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI), Helicopters

2016-05-09

final rule

Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

Unsafe Condition: Incorrectly positioned fuel pump wiring within the fuel tank interfering with the operation of the fuel quantity sensor float, causing an erroneous fuel quantity indication in the cockpit.

Effective: Apr 15, 2016 Category: aircraft Compliance: before further flight

Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

2016-04982

final rule

Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

Unsafe Condition: Incorrect routing of the auxiliary fuel pump (fuel pump) wiring, which could result in an erroneous fuel quantity indication in the cockpit and subsequent fuel exhaustion and emergency landing.

Effective: Apr 15, 2016 Category: aircraft Compliance: Within 100 hours time-in-service

Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

2016-04-15

final rule

Airworthiness 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.

Effective: Mar 31, 2016 Category: aircraft Compliance: Within 100 hours time-in-service (TIS) or during the next annual inspection, whichever occurs first.

Why matched: Airworthiness Directives; MD Helicopters Inc., Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2016-01-19

final rule

Airworthiness 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.

Effective: Feb 25, 2016 Category: aircraft Compliance: Within 1 year or at the next annual inspection, whichever comes later.

Why matched: Airworthiness Directives; MD Helicopters Inc.

2014-16-01

final rule

Airworthiness Directives; MD Helicopters, Inc., Helicopters

Unsafe Condition: A cracked main rotor upper hub assembly (upper hub) could result in failure of the upper hub and subsequent loss of control of the helicopter.

Effective: Aug 20, 2014 Category: aircraft Compliance: Within the next 25 hours time-in-service (TIS) or at the next annual inspection, whichever occurs...

Why matched: Airworthiness Directives; MD Helicopters, Inc., Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2013-20-16 Recurring

final rule

Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

Unsafe Condition: Bolt failure, which could result in loss of main rotor blade structural integrity and subsequent loss of control of the helicopter.

Effective: Dec 5, 2013 Category: aircraft Compliance: Before further flight for daily checks and inspections, and within 300 hours time-in-service for ...

Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2013-19-24

final rule

Airworthiness Directives; MD Helicopters, Inc., Helicopters

Unsafe Condition: The tail rotor blade pitch horn separating from the tail rotor blade, leading to an unbalanced condition, vibration, loss of tail rotor pitch control, and loss of directional control of the helicop...

Effective: Dec 5, 2013 Category: aircraft Compliance: Within 60 days and thereafter at intervals not to exceed one year

Why matched: Airworthiness Directives; MD Helicopters, Inc., Helicopters

2013-06-51

final rule

Airworthiness Directives; Various Helicopter Models

Unsafe Condition: Failure of the overload clutch in Goodrich externally-mounted hoists, resulting in uncontrolled reeling-out of the cable and loss of load capacity.

Effective: Jul 15, 2013 Category: aircraft Compliance: Before the next flight involving a hoist operation.

Why matched: Airworthiness Directives; Various Helicopter Models

2013-05-16

final rule

Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems (Type Certificate Is Currently Held by MD Helicopters, Inc.) Helicopters

Unsafe Condition: Too short an edge distance from an aft longeron rivet to the edge of a tailboom frame ring, which could result in failure of the tailboom and subsequent loss of control of the helicopter.

Effective: Apr 30, 2013 Category: aircraft Compliance: Within 6 months or 100 hours time-in-service, whichever occurs first.

Why matched: Airworthiness Directives; Hughes Helicopters, Inc., and McDonnell Douglas Helicopter Systems (Type Certificate Is Currently Held by MD Helicopters, Inc.) Helicopters

Technical illustration of a riveted aircraft structural panel and frame
Problem area Airframe structure

2013-03-03

final rule

Airworthiness Directives; MD Helicopters, Inc., Helicopters

Unsafe Condition: A decrease, over time, in the strength of a T-T strap caused by moisture, which could result in failure of a T-T strap, loss of directional control, and subsequent loss of control of the helicopter.

Effective: Mar 15, 2013 Category: aircraft Compliance: Within six months

Why matched: Airworthiness Directives; MD Helicopters, Inc., Helicopters

2012-25387 Recurring

final rule

Airworthiness Directives; MD Helicopters, Inc.

Unsafe Condition: A crack in the main rotor lower hub assembly (lower hub). This condition could result in failure of the lower hub and subsequent loss of control of the helicopter.

Effective: Nov 27, 2012 Category: aircraft Compliance: Within 100 hours time-in-service (TIS) or during the next annual inspection, whichever occurs fir...

Why matched: Airworthiness Directives; MD Helicopters, Inc.

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2012-21-01

final rule

Airworthiness Directives; MD Helicopters, Inc.

Unsafe Condition: A crack in the main rotor lower hub assembly could lead to failure of the lower hub and subsequent loss of control of the helicopter.

Effective: Nov 27, 2012 Category: aircraft Compliance: before further flight if a crack is found; otherwise, inspections must be conducted at 100-hour i...

Why matched: Airworthiness Directives; MD Helicopters, Inc.

Technical illustration of a helicopter rotor hub assembly
Problem area Rotor system

2011-22-08

final rule

Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters

Unsafe Condition: Failure of the Vertical Stabilizer Control System (VSCS) tube adapter, part number 500N7218-1, could lead to loss of yaw control and subsequent loss of control of the helicopter.

Effective: Dec 13, 2011 Category: aircraft Compliance: Before further flight

Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters

Technical illustration of an aircraft flight control surface and actuator
Problem area Flight controls

2011-17-11 Recurring

final rule

Airworthiness Directives; The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes

Unsafe Condition: Cracking of the lower rear spar caps of the wings at the outboard flap and inboard drive hinge at station Xrs=164.000, due to material fatigue from normal flap operating loads.

Effective: Sep 26, 2011 Category: aircraft Compliance: Within 50 flight hours after the effective date of the AD.

Why matched: Airworthiness Directives; The Boeing Company Model DC-9-81 (MD- 81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87 (MD-87), and MD-88 Airplanes