AD 75-22-04
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
Corrosion, cracks, or other defects in fiberglass tail rotor blades P/N 369A1710, 369A1710-9, 369A1710-11, 369-6120, 369A1607, and 369CSK22 may lead to blade failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect tail rotor blades using visual, X-ray, or other specified methods per Hughes SIN No. HN-88. Replace or rework blades as needed following the SIN's procedures. Mark or destroy non-repairable blades to prevent reuse.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 100 hours additional time in service or within six calendar months from the effective date (October 23, 1975), whichever occurs first for blades with ≥500 hours time in service. For blades with <500 hours, comply prior to 600 hours total time or within six calendar months from the effective date, whichever comes first. Subsequent inspections every 12 calendar months.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Hughes Models 369, 369A, 369H, 369HE, 369HM, 369HS helicopters with fiberglass tail rotor blades P/N 369A1710, 369A1710-9, 369A1710-11, 369-6120, 369A1607, and 369CSK22.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.