AD 2013-22-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | S-76A | Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters |
Unsafe Condition
A crack in a spindle cuff assembly or blade fold cuff assembly could result in failure of the assembly, loss of a rotor blade, and subsequent loss of control of the helicopter.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 150 hours time-in-service (TIS), conduct a nondestructive inspection (NDI) for each spindle cuff assembly or blade cuff assembly with 1,900 or more hours TIS. Visually inspect the area indicated in Figure 4 of the ASB for each assembly with less than 1,900 hours TIS. Replace any cracked part before further flight. Apply white paint to the inspection area if no crack is found.
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Compliance Time
Within 150 hours time-in-service (TIS)
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Affected Aircraft
Sikorsky Model S-76A, S-76B, and S-76C helicopters with a serial number up to and including 760822, equipped with spindle cuff assembly, part number (P/N) 76102-08001-043, -045, or -046, or blade fold cuff assembly, P/N 76150-09601-041.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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