AD 97-17-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214ST | Airworthiness Directives; Bell Helicopter Textron, Inc. Model 214ST Helicopters |
Unsafe Condition
Self-activation of emergency float inflation solenoid valves, P/N 214-073-929-103 or -105, could lead to inadvertent inflation of the emergency float system, which could lead to loss of control of the helicopter.
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Required Actions
Replace solenoid valves P/N 214-073-929-103 or -105 with P/N 214-073-929-107 in solenoid valve assemblies P/N 214-073-940-101 or -103. Installation of the new valves or assemblies P/N 214-073-940-105 terminates AD requirements.
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Compliance Time
At the next scheduled 'B' (250 hour) inspection, or 180-day float inspection, or 3-year float system operational inspection, whichever occurs first
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 214ST helicopters equipped with emergency float kit P/N 214-706-120 containing valves P/N 214-073-929-103 or -105 in valve assemblies P/N 214-073-940-101 or -103.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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