AD 74-07-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | MD Helicopters, Inc. | 369A | Airworthiness Directives; Hughes Models 369A, 369H, 369HE, 369HS and 369HM Helicopters |
| aircraft | MD Helicopters, Inc. | 369H | Airworthiness Directives; Hughes Models 369A, 369H, 369HE, 369HS and 369HM Helicopters |
| aircraft | MD Helicopters, Inc. | 369HE | Airworthiness Directives; Hughes Models 369A, 369H, 369HE, 369HS and 369HM Helicopters |
| aircraft | MD Helicopters, Inc. | 369HM | Airworthiness Directives; Hughes Models 369A, 369H, 369HE, 369HS and 369HM Helicopters |
| aircraft | MD Helicopters, Inc. | 369HS | Airworthiness Directives; Hughes Models 369A, 369H, 369HE, 369HS and 369HM Helicopters |
Unsafe Condition
Mismatched aluminum tail rotor blade serial numbers (P/N 369A1613-3 serial numbers 0001 through 0156 mated with blade serial numbers 0157 and subsequent) could result in tail rotor failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the tail rotor assembly to verify blade serial numbers are not mismatched. Replace mismatched tail rotor blades before further flight. Note the AD inspection in Aircraft Maintenance Records.
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
Hughes Models 369A, 369H, 369HE, 369HS, and 369HM helicopters equipped with aluminum tail rotor blade P/N 369A1613-3, all serial numbers.
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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