AD 2005-20-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Continental | Motors GTSIO-520 Series Reciprocating | Airworthiness Directives; Teledyne Continental Motors GTSIO-520 Series Reciprocating Engines |
Unsafe Condition
Failure of the starter adapter assembly and/or crankshaft gear, resulting in engine failure and possible forced landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Initial and repetitive visual inspections of the starter adapter assembly and crankshaft gear. Unscheduled inspections of the starter adapter assembly and crankshaft gear due to a rough-running engine. Replacement of the starter adapter shaft gear needle bearing with a specified bushing. Installation of a certain TCM service kit at the next engine overhaul or starter adapter replacement, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the compliance times specified in the AD unless the actions have already been performed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Teledyne Continental Motors GTSIO-520 series reciprocating engines installed on, but not limited to, Twin Commander (formerly Aero Commander) model 685, Cessna model 404, 411 series, and 421 series, British Aerospace, Aircraft Group, Scottish Division model B.206 series 2, and Aeronautica Macchi, model AM-3 airplanes.
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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