AD 2019-08-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Cirrus | SF50 | Airworthiness Directives; Cirrus Design Corporation |
Unsafe Condition
The SWPS or ESP systems may engage even when sufficient airspeed and proper angle of AOA exists for normal flight. The SWPS includes the stall warning alarm, stick shaker, and stick pusher. The ESP includes under speed protection (USP). The SWPS or the ESP systems engaging inappropriately could potentially result in a stall warning crew alert (CAS) message activation, accompanied by an audio alarm and stick shaker activation, followed possibly by either low speed ESP/USP engaging, and the stick pusher engaging.
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Required Actions
Replacing the AOA sensors with improved AOA sensors. The FAA also reviewed Cirrus SF50 Alert Service Advisory SA19-08, dated April 8, 2019. This service information provides instructions for the pilot to follow in the event the AOA sensor fails in flight.
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Compliance Time
Before further flight
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Affected Aircraft
Cirrus Design Corporation Model SF50 airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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