37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 1679706 |
Time | |
Date | 201908 |
Local Time Of Day | 0601-1200 |
Place | |
Locale Reference | ZZZ.Airport |
State Reference | US |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Make Model Name | Regional Jet 200 ER/LR (CRJ200) |
Operating Under FAR Part | Part 121 |
Flight Phase | Landing |
Flight Plan | IFR |
Person 1 | |
Function | Captain Pilot Flying |
Qualification | Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine |
Events | |
Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Speed All Types Inflight Event / Encounter Weather / Turbulence |
Narrative:
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.
Original NASA ASRS Text
Title: CRJ-200 Captain reported stick shaker during landing.
Narrative: 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.
Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.