AD 2006-25-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; Schempp-Hirth Flugzeugbau GmbH Model Duo Discus T Gliders |
Unsafe Condition
Possible failure of the attachment of the propeller blades.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the propeller hub in the area of the five propeller blade roots for cracks using a minimum 10x magnifier. If cracks are found or the propeller accumulates 15 hours TIS, remove the propeller hub and return it to the propeller manufacturer for inspection and overhaul. For propellers with 15 or more hours TIS, remove the propeller hub and return it for inspection and overhaul immediately.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 15 hours time-in-service (TIS) or before further flight, depending on the propeller's TIS as of the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Schempp-Hirth Flugzeugbau GmbH Model Duo Discus T gliders, serial numbers 1 through 149, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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