AD 88-12-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bell Helicopter Textron, Inc. | 214ST | Airworthiness Directives; BELL HELICOPTER TEXTRON, INC. (BHTI) Model 214ST Helicopters |
Unsafe Condition
Failure of the main rotor (M/R) drag brace assembly due to corrosion pitting, mechanical damage, or cracks in the barrel, clevis, or nuts could result in loss of the helicopter.
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Required Actions
Inspect main rotor drag brace assemblies with 250 or more hours' time in service within the next 10 hours, then every 250 hours. Disassemble, clean, inspect for corrosion pitting and damage, measure length, and replace parts with cracks or excessive corrosion. Reassemble with specified torque and corrosion protection.
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Compliance Time
Required as indicated, unless already accomplished.
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Affected Aircraft
Bell Model 214ST helicopters, serial numbers 28101 through 28195 and 18402.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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