AD 2016-23-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Sikorsky | Aircraft Corporation | Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters |
Unsafe Condition
Autopilot unable to maintain level flight during certain flight conditions, specifically when at density altitudes greater than 13,000 feet, commanding a climb or descent rate greater than 1,000 fpm, and engaging ALT HOLD mode with large collective inputs.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 10 hours time-in-service (TIS), revise the Limitations section of the Rotorcraft Flight Manual (RFM) to prohibit the use of ALT mode during a rate of climb or descent greater than 1,000 fpm.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 hours time-in-service (TIS)
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Sikorsky Aircraft Corporation Model S-76D helicopters, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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