AD 75-10-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369 | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
| aircraft | MD Helicopters, Inc. | 369A | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
| aircraft | MD Helicopters, Inc. | 369H | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
| aircraft | MD Helicopters, Inc. | 369HE | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
| aircraft | MD Helicopters, Inc. | 369HM | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
| aircraft | MD Helicopters, Inc. | 369HS | Airworthiness Directives; Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters |
Unsafe Condition
Cracks exist in the root fittings of the tail rotor blades, part number 369A1613 or 369A1613-3, which could result in blade failure.
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Required Actions
Perform daily close visual checks or inspections per Hughes Service Information Notice No. HN-83, remove cracked blades from service before further flight, and complete Part I of HN-83 within 50 hours time in service. Spare blades must also comply with Parts I and II of HN-83 before installation.
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Compliance Time
Within the next 50 hours time in service for Part I of HN-83; daily checks must be performed each day the helicopter is operated.
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Affected Aircraft
Hughes model 369, 369A, 369H, 369HM, 369HS, and 369HE helicopters with aluminum tail rotor blades, part number 369A1613 or 369A1613-3.
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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