AD 91-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Columbia Helicopters, Inc. | 234 | Airworthiness Directives; BOEING HELICOPTERS (BOEING VERTOL HELICOPTER CO. Model 234 Series Helicopter |
Unsafe Condition
Failure of a rotor blade damper elastomeric rod end, part number 234RS202-1 and -2, could result in the rotor blade striking the helicopter during start up or shut down.
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Required Actions
Inspect rod ends P/N 234RS202-1 and -2 with over 350 hours' time in service using FAA-approved eddy current methods within 10 hours after AD effective date. Repeat inspections at intervals not exceeding 25 hours' time in service. Replace cracked rod ends before further flight. Inspect used spares prior to installation and at 25-hour intervals.
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Compliance Time
Within the next 10 hours' time in service after the effective date of this AD
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Affected Aircraft
Model 234 series helicopters with serial numbers MJ001, MJ002, MJ003, MJ005, MJ006, MJ016, MJ017, MJ022, MJ023, MM819, MM820, and MM821.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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