AD Amdt-39-10926
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Textron | Various | Airworthiness Directives; AlliedSignal, Inc. Model T5317A-1 Turboshaft Engines |
Unsafe Condition
Failure of both primary and secondary fuel pump drive shaft splines in the fuel regulator, Part Number 1-170-240-93, could result in loss of fuel flow from the engine fuel regulator, leading to engine failure and forced autorotation landing.
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Required Actions
Inspect the fuel regulator, Part Number 1-170-240-93, by conducting a pressure test to determine if both fuel pumps are producing fuel pressure. Replace the fuel regulator with a serviceable part if necessary. Perform repetitive engine fuel pump pressure tests as required.
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Compliance Time
Before further flight
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Affected Aircraft
AlliedSignal, Inc. (formerly Textron Lycoming) model T5317A-1 turboshaft engines installed on Kaman Aerospace model K-1200 rotorcraft engaged in logging operations.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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