AD 82-17-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky Aircraft Corporation | S-76A | Airworthiness Directives; SIKORSKY AIRCRAFT Model S-76A Helicopters |
Unsafe Condition
Possibility of fire due to a malfunctioning rotor brake.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect puck-to-disk clearance for .045 inch minimum at all 4 pucks within 10 hours' time in service. If clearance is less than .045 inch, replace rotor brake assembly. Modify No. 2 relay panel assembly, add shield assemblies, install warning relay, and modify brake with torqueless grip adjusters within 90 days. Equivalent FAA-approved methods are acceptable.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 10 hours' time in service after the effective date of the AD for inspections, and within the next 90 days after the effective date for modifications.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Sikorsky Model S-76A helicopters equipped with rotor brake systems, specifically those with P/N 76363-09101-101 rotor brake.
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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