AD 2002-13-05 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369D | Airworthiness Directives; MD Helicopters, Inc. Model 369D, 369E, 369F, and 369FF Helicopters |
| aircraft | MD Helicopters, Inc. | 369E | Airworthiness Directives; MD Helicopters, Inc. Model 369D, 369E, 369F, and 369FF Helicopters |
| aircraft | MD Helicopters, Inc. | 369F | Airworthiness Directives; MD Helicopters, Inc. Model 369D, 369E, 369F, and 369FF Helicopters |
| aircraft | MD Helicopters, Inc. | 369FF | Airworthiness Directives; MD Helicopters, Inc. Model 369D, 369E, 369F, and 369FF Helicopters |
Unsafe Condition
Loss of a tail rotor gearbox due to bolts of inadequate grip length and subsequent loss of control of the helicopter.
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Required Actions
Identify the part number of the bolts attaching the tail rotor gearbox to the tailboom. Replace any bolt with inadequate grip length with an airworthy bolt. Add an additional washer if more than four threads protrude from the nutplate. Reapply a slippage mark to each bolt regardless of torque test outcome.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
MD Helicopters, Inc. Models 369D, 369E, 369F, 369FF with tailbooms serial numbers 5001-5032 modified under STC SH5055NM or SH4801NM.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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