AD Amdt-39-10820

final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369D, 369E, 369FF, 500N, AH-6, and MH-6 Helicopters

AD Number
Amdt-39-10820
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Docket No. 97-SW-47-AD
FR Citation
63 FR 53800

Applicability

TypeManufacturerModelDetails
aircraft McDonnell Douglas Helicopter Systems Model 369D Airworthiness Directives; McDonnell Douglas Helicopter Systems Model 369D, 369E, 369FF, 500N, AH-6, and MH-6 Helicopters

Unsafe Condition

Wear from spinning of the bearing outer race on the overrunning clutch retainer, carrier, housing, and pin could lead to failure of the overrunning clutch, excessive vibration, and subsequent loss of power to the helicopter rotor drive system.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Visually inspect the overrunning clutch retainer, carrier, housing, and pin for wear from bearing outer race spinning. Address any detected wear as specified in the AD to prevent clutch failure and power loss.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Before further flight

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

McDonnell Douglas Helicopter Systems Models 369D, 369E, 369FF, 500N, AH-6, and MH-6 helicopters.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 6, 2026

Rights: U.S. Government Public Domain

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