AD 2008-17-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; DG Flugzeugbau GmbH Model DG-500MB Powered Sailplanes |
Unsafe Condition
Some bolts of the extension retraction mechanism fractured due to fatigue stress from increasing push-pull loads acting on incorrectly tightened screws, leading to uncommanded retraction of the powerplant after engine shutdown.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace eight bolts (four connecting the fork 5M203 to the 5M204 adapter and four connecting the adapter 5M204 to the spindle drive) with new ones of higher strength. Rework the coupling of the 5M203 fork to the 5M204 adapter and the coupling of the 5M204 adapter to the spindle drive by glueing the parts together, in addition to the pre-existing bolts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days after September 23, 2008
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
DG Flugzeugbau GmbH Model DG-500MB powered sailplanes, all serial numbers, 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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.