AD 82-26-07 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214ST | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. Model 214ST Helicopters |
Unsafe Condition
Separation of the tailboom from the fuselage due to failure of the upper left tailboom attach longeron, part number 214-031-431-101, caused by cracks extending from the pin hole in the longeron.
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Required Actions
Inspect the aft portion of the upper left longeron for cracks before first flight daily and within 5 hours time in service, then every 25 hours. Install a reinforcement modification within 25 hours or before 100 hours total time, including a new support (P/N 214-031-454-101) and doubler replacement. Replace cracked parts before flight and conduct subsequent inspections every 250 hours.
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Compliance Time
Within the next 5 hours time in service after the effective date (August 17, 1984) and thereafter at intervals not to exceed 25 hours time in service for inspections. The reinforcement modification must be installed within the next 25 hours time in service after the effective date or before the accumulation of 100 hours total time in service, whichever occurs later.
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Affected Aircraft
Bell Helicopter Textron, Inc. Model 214ST helicopters with upper left tailboom attach longeron part number 214-031-431-101 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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