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, 2020Category: aircraftCompliance: 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
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, 2020Category: aircraftCompliance: Within 3 months of the effective date of this AD, or at the next overhaul of the M/R assembly, wh...
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, 2020Category: aircraftCompliance: Within 100 hours time-in-service (TIS)
Why matched: Airworthiness Directives; MD Helicopters Inc. Helicopters
Airworthiness Directives; MD Helicopters, Inc. (MDHI), Helicopters
Unsafe Condition: a crack in an MRB
Effective: Apr 17, 2019Category: aircraftCompliance: 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
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, 2016Category: aircraftCompliance: before further flight
Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI) Helicopters
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, 2016Category: aircraftCompliance: Within 100 hours time-in-service
Why matched: Airworthiness Directives; MD Helicopters, Inc. (MDHI) 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, 2016Category: aircraftCompliance: Within 100 hours time-in-service (TIS) or during the next annual inspection, whichever occurs first.
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, 2016Category: aircraftCompliance: Within 1 year or at the next annual inspection, whichever comes later.
Why matched: Airworthiness Directives; MD Helicopters Inc.
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, 2014Category: aircraftCompliance: Within the next 25 hours time-in-service (TIS) or at the next annual inspection, whichever occurs...
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, 2013Category: aircraftCompliance: 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
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, 2013Category: aircraftCompliance: Within 60 days and thereafter at intervals not to exceed one year
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, 2013Category: aircraftCompliance: Before the next flight involving a hoist operation.
Why matched: Airworthiness Directives; Various Helicopter Models
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, 2013Category: aircraftCompliance: 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
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, 2013Category: aircraftCompliance: Within six months
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, 2012Category: aircraftCompliance: Within 100 hours time-in-service (TIS) or during the next annual inspection, whichever occurs fir...
Why matched: 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, 2012Category: aircraftCompliance: before further flight if a crack is found; otherwise, inspections must be conducted at 100-hour i...
Why matched: Airworthiness Directives; MD Helicopters, Inc.
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, 2011Category: aircraftCompliance: Before further flight
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Unsafe Condition: Incorrectly inserted flanged bushings in the main rotor lower hub assembly (lower hub) can result in local corrosion, leading to fatigue cracking.
Effective: Aug 1, 2011Category: aircraftCompliance: Within 100 hours time-in-service (TIS) or during the next annual inspection, whichever occurs fir...
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Unsafe Condition: Crack in the main rotor hub near the flex beam bolt hole locations, which could lead to hub failure and subsequent loss of control of the helicopter.
Effective: Dec 1, 2010Category: aircraftCompliance: Within 4 hours time-in-service
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Airworthiness Directives; MD Helicopters, Inc. Model MD-900 Helicopters
Unsafe Condition: Cracks in the swashplate spherical slider bearing (slider bearing) occurred well before the previously increased retirement life of 2,030 hours time-in-service (TIS) was reached, leading to potenti...
Effective: Apr 20, 2010Category: aircraftCompliance: Within 100 hours TIS for serial number application; removal from service by specified TIS limits.
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD-900 Helicopters
Airworthiness Directives; MD Helicopters, Inc. Model MD900 (including the MD902 Configuration) Helicopters
Unsafe Condition: Failure to comply with the procedures in MDHI Mandatory Service Bulletin SB900-099 R1 may result in reduced anti-torque control during certain combinations of high gross weight, density altitude, a...
Effective: May 14, 2009Category: aircraftCompliance: Within 30 days
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 (including the MD902 Configuration) Helicopters
Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters
Unsafe Condition: Failure of the left Vertical Stabilizer Control System (VSCS) adapter tubes on MD900 helicopters, leading to uncontrollable vertical stabilizer and reduced yaw control.
Effective: Dec 17, 2008Category: aircraftCompliance: Before further flight
Why matched: Airworthiness Directives; MD Helicopters, Inc. Model MD900 Helicopters