AD 93-01-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 58 | Airworthiness Directives; Beech Models 58 and 58A Airplanes |
| aircraft | Textron Aviation Inc. | 58A | Airworthiness Directives; Beech Models 58 and 58A Airplanes |
Unsafe Condition
Fuel selector valve binding caused by pressure buildup in the crossfeed lines, which could result in the inability to control the fuel flow to the engines.
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Required Actions
Replace both existing crossfeed check valves with new valves, part number 50-380170-39, in accordance with Beech Service Bulletin No. 2454. Special flight permits may be issued under FAR 21.197 and 21.199 to operate the airplane to a location where AD requirements can be accomplished.
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Compliance Time
within the next 50 hours TIS after the effective date of this AD
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Affected Aircraft
Beech Models 58 and 58A airplanes with serial numbers TH-1488, TH-1600, TH-1613 through TH-1635, and TH-1638 through TH-1662, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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