AD Amdt-39-10149
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | Helicopter Systems Model MD-900 | Airworthiness Directives; McDonnell Douglas Helicopter Systems Model MD-900 Helicopters |
Unsafe Condition
The outer bearing race rotating relative to the swashplate assembly, evidenced by wear marks in the rotating swashplate, could cause heat accumulation and damage to the bearing, leading to degraded helicopter response to pilot control input and possible loss of control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove certain serial-numbered main rotor swashplate bearings and replace them with airworthy bearings.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Helicopter Systems Model MD-900 helicopters with certain serial-numbered main rotor swashplate bearings.
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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