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CL65 encounters aggressive windshear and must depart assigned altitude to maintain airspeed above stall near roc.
| Attributes | |
| ACN | 445943 |
| Time | |
| Date | 199908 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : roc.airport |
| State Reference | NY |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | Mixed |
| Weather Elements | Turbulence Ice |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 12000 flight time type : 3200 |
| ASRS Report | 445943 |
| Person 2 | |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : turbulence inflight encounter other other anomaly |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to original clearance flight crew : exited adverse environment |
| Consequence | other |
| Supplementary | |
| Problem Areas | Weather |
| Primary Problem | Weather |
| Air Traffic Incident | other |
Narrative:
On climb out we were indicating 200-220 KTS and accelerating. Hit a downdraft (windshear) that degraded airspeed so rapidly that in order to keep from stalling we firewalled engines and reduced pitch. Airspeed loss was almost 50 KTS initially and this resulted in stick shaker activation. We accepted the sink rate and allowed the aircraft to accelerate until sufficient speed was built up to resume climb. Very exciting, very scary.
Original NASA ASRS Text
Title: CL65 ENCOUNTERS AGGRESSIVE WINDSHEAR AND MUST DEPART ASSIGNED ALT TO MAINTAIN AIRSPD ABOVE STALL NEAR ROC.
Narrative: ON CLBOUT WE WERE INDICATING 200-220 KTS AND ACCELERATING. HIT A DOWNDRAFT (WINDSHEAR) THAT DEGRADED AIRSPD SO RAPIDLY THAT IN ORDER TO KEEP FROM STALLING WE FIREWALLED ENGS AND REDUCED PITCH. AIRSPD LOSS WAS ALMOST 50 KTS INITIALLY AND THIS RESULTED IN STICK SHAKER ACTIVATION. WE ACCEPTED THE SINK RATE AND ALLOWED THE ACFT TO ACCELERATE UNTIL SUFFICIENT SPD WAS BUILT UP TO RESUME CLB. VERY EXCITING, VERY SCARY.
Data retrieved from NASA's ASRS site as of July 2007 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.