AD 82-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369D | Airworthiness Directives; HUGHES HELICOPTERS, INC. Model 369D Helicopters |
Unsafe Condition
Failure of the output gearshaft assembly, part number 369D25132, due to cracks in the transmission output shaft or an unacceptable electron beam weld area.
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Required Actions
Conduct visual inspections for cracks in the transmission output shaft within 100 hours' time in service after the effective date, repeated every 300 hours' time in service until an ultrasonic inspection is done. The ultrasonic inspection of the electron beam weld area must be done by the next transmission overhaul or major disassembly. Replace the assembly if cracks or an unacceptable weld are found, using an inspected and acceptable assembly. Identify assemblies with acceptable welds per Figure 2 of DN-105.
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Compliance Time
Within 100 hours' time in service after August 23, 1982, and subsequent inspections every 300 hours' time in service until ultrasonic inspection is completed. The ultrasonic inspection must be done no later than the next transmission overhaul or major disassembly.
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Affected Aircraft
Hughes Helicopters, Inc. Model 369D helicopters with main transmission part number 369D25100 - basic configuration.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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