AD 72-03-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky Aircraft Corporation | S-61A | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61D | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61E | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61L | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61N | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61NM | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61R | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
| aircraft | Sikorsky Aircraft Corporation | S-61V | Airworthiness Directives; Sikorsky Model S-61 Type Helicopters |
Unsafe Condition
Failures of flight control system components due to cracks in 7075-T6 and 7079-T6 aluminum alloy forgings and control system components with part numbers S6140-62118, S6140-62115, and S6140-20004.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect 7075-T6 and 7079-T6 aluminum alloy forgings of the flight control systems within 30 days after the effective date and every 30 days thereafter. Inspect control system components P/N S6140-62118, S6140-62115, and S6140-20004 within 75 days after the effective date. Remove components with cracks from service before further flight.
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Compliance Time
Within the next 30 days after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 30 days from the last inspection. Within the next 75 days after the effective date of this AD, unless already accomplished.
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Affected Aircraft
Sikorsky Model S-61A, S-61D, S-61E, S-61L, S-61N, S-61NM, S-61R, S-61V helicopters certified in all categories.
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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