AD 2018-03-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Aviation Inc | Airworthiness Directives; Textron Aviation Inc. Airplanes |
| aircraft | Aviat | Various | Airworthiness Directives; Textron Aviation Inc. Airplanes |
Unsafe Condition
Cracks in the left and/or the right forward lower carry through spar cap could cause the carry through spar cap to fail during flight and result in loss of control.
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Required Actions
Repetitively inspect the left and the right forward lower carry through spar cap for cracks and replacing the carry through spar if cracks are found. This AD also requires sending the inspection results to the FAA.
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Compliance Time
Before further flight
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Affected Aircraft
Textron Aviation Inc. Models 401, 401A, 401B, 402, 402A, 402B, 402C, 411, 411A, 414, 414A 421, 421A, 421B, 421C, and 425 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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