Regional Jet 200 ER/LR (CRJ200)
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Deviation - Speed All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Weather / Turbulence
Flight Crew Regained Aircraft Control
Aircraft; Human Factors; Weather
During the final two-three seconds (approximately) prior to touchdown; at an altitude of less than 50 ft. (approximately); we encountered a loss of airspeed that momentarily triggered the stick-shaker. The approach was stable at 500 ft. AGL and; due to the conditions present; I briefed my intention to maintain an airspeed at the 'top of the bug'. At 100 ft. AGL; the PM (Pilot Monitoring) noted the airspeed to be at VREF+10. While descending below approximately 50 ft. AGL; the airspeed decayed rapidly; until reaching approximately 120 KIAS (as reported by the PM during the Post-flight De-briefing) at touchdown. [This was an approximate 15- to 20-kt loss]By my estimation; this event occurred due to two primary factors; the first of which was the challenging weather conditions at touchdown. I mitigated these threats by briefing the conditions; flying a reasonably faster airspeed; and diligently anticipating and reacting to the gains and losses of airspeed. The sudden last-second decay in airspeed was unforeseen; yet not severe enough (given present altitude and idle thrust) to warrant a go-around as a safer course of action. Secondly; the stick-shaker may have been activated through a temporary and anomalous triggering of the Stall Protection System. This theory was further substantiated by the fact that the very next landing (under nearly ideal circumstances; and good; smooth technique) saw an activation of the Auto-Ignition system at approximately 20 ft. AGL.
CRJ-200 Captain reported stick shaker during landing.