AD 95-11-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Hartzell Propeller, Inc. | HC-92W | Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-92ZK-1 | Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-92ZK-2 | Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-92ZK-6 | Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) Propellers |
| aircraft | Hartzell Propeller, Inc. | HC-92ZK-8 | Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) Propellers |
Unsafe Condition
Cracks at the propeller blade shank, which may have initiated from failed blade clamp screws (part number A-282), leading to propeller blade separation and potential loss of aircraft control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect blade clamp screws for looseness or breakage within 10 hours time in service after the effective date. Disassemble, perform dye penetrant inspection of blade shank, compressive rolling, and replace clamp screws with part number A-321 at intervals of 500 hours time in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours time in service after the effective date of this AD, and at intervals of 500 hours time in service.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hartzell Propeller Inc. Models HC-92WK-( ) and HC-92ZK-( ) propellers installed on various aircraft including Aerostar 360, PA-23, PA-24, PA-25, and others listed in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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