AD 62-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 278 | BEECH Model 278 Propellers |
Unsafe Condition
Cracks have occurred in the welded joint where the aft side of the hub barrel is joined to the hydraulic cylinder, which could lead to serious oil loss.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 25 hours' time in service after the effective date, and thereafter within each 100 hours' time in service, remove the propeller spinner and visually inspect for cracks and oil leaks in the weld area. At each propeller overhaul, inspect the hub by magnetic particle inspection or FAA approved equivalent method, focusing on the weld area. Replace cracked parts with new parts prior to further flight.
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Compliance Time
Within the next 25 hours' of time in service after the effective date of this AD, and thereafter within each 100 hours' time in service
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Affected Aircraft
All Model 278 Propellers with more than 200 hours' time in service installed in single engine tractor type aircraft such as Beech Model A45 (T-34A), B45, D45 (T-34B), H35, and subsequent Bonanza Aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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