AD 2010-06-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | Aircraft Corporation Model S-76C | Airworthiness Directives; Sikorsky Aircraft Corporation Model S-76C Helicopters |
Unsafe Condition
Presence of a metallic foil shunt in the emergency flotation system squib connector, which could prevent the flotation system from deploying and could prevent the helicopter from staying afloat long enough to enable emergency evacuation after a water landing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the flotation system connector to determine if a metallic foil shunt is installed. If found, remove the metallic foil shunt in accordance with the Accomplishment Instructions in Sikorsky Alert Service Bulletin No. 76-32-30.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before the next flight over water, or within 30 days after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Sikorsky Aircraft Corporation Model S-76C helicopters, serial numbers 760501 and 760506 through 760761, with Option Code 88051 Flotation System installed by Keystone Helicopter Corporation, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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