AD Amdt-39-9148
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Schweizer | Various | Airworthiness Directives; Schweizer Aircraft Corporation and Hughes Helicopters, Inc. Model 269A, 269A-1, 269B, 269C, and TH-55A Series Helicopters |
Unsafe Condition
Failure of the aluminum spring retainer thermofit tube (plastic sleeve) in the clutch control spring assembly could result in loss of engine drive power to the rotor drive system and subsequent forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the clutch control spring assembly for component wear, replace unairworthy parts, and follow revised service bulletin procedures for replacing the aluminum spring retainer thermofit tube.
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
Schweizer Aircraft Corporation and Hughes Helicopters, Inc. Model 269A, 269A-1, 269B, 269C, and TH-55A series 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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