AD 94-05-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron Aviation Inc. | 400A | Airworthiness Directives; Beech Model 400A Airplanes |
Unsafe Condition
Fatigue-related cracking radiating outward from the bushings welded into the cabin seat frames may cause separation of the cabin seat frames from their bases during an emergency landing.
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Required Actions
Within 200 hours time-in-service after the effective date, inspect for fatigue-related cracking extending radially outward from the bushings in cabin seat frames per Service Bulletin 001. Measure gap size between bearing shafts and seat frames per the same service bulletin. Repair by welding or reinforcing frames if cracking is found or gap exceeds 0.32 inch, prior to further flight.
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Compliance Time
Within 200 hours time-in-service after the effective date of this AD
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Affected Aircraft
Beech Model 400A airplanes; serial numbers RK-1 through RK-40 inclusive, and RK-45; equipped with Tosington Cabin Seat Frames having serial numbers prior to 5606, on which Modification Kit Number 303-307 has not been installed.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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