EMB-145 crew reported a wind-shear encounter during approach. Flight crew executed a manual go around and returned for landing.
Synopsis
EMB-145 crew reported a wind-shear encounter during approach. Flight crew executed a manual go around and returned for landing.
Narrative
Loss of 20 knots on approach to RW XXR at ZZZ at 2000ft msl(1300 ft agl) prior to required stable approach altitude; but we got a brief stick shaker when the autopilot was reacting to the loss of airspeed. The airspeed was dropped close to the Vref but the PLI dipped to the red zone. Disconnected the autopilot and initiated a go around. Returned for another approach and normal landing. Winds were reported at 230 11G21 with no note of wind shear. Advised ATC of the loss of 20 knots was the reason for the go around and they added LLWS to the next ATIS and winds then reported at 230 11G31. Incidentally; I was just about to disconnect the autopilot pilot and was voicing that to the PM when we got the loss.Cause: Loss of 20 knots of airspeed on approach and not disconnecting the autopilot prior to a brief stick shaker.Should have possibly disconnected the autopilot a bit sooner instead of mentioning I might have to soon... I probably could have reacted to the airspeed loss better than the autopilot did.
Second reporter narrative
During approach into ZZZ we were on glideslope and localizer configured for landing at approximately 1300 ft AGL. We had SPS (Stall Protection System) advanced as we had experienced icing earlier in the flight but we were not currently in icing. We were at approach speed when we lost approximately 20 knots; the autopilot pitched up to maintain the glideslope. We had stick shaker activation momentarily; and the autopilot was disengaged. We immediately executed a go around. Winds were [email protected] to low level wind shear we got a stick shaker activation and executed a go around.In bumpy conditions consider disengaging the autopilot sooner.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.