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Severe turbulence in den area. Cpr jet suffers loss of aircraft control and experiences an altitude deviation.
| Attributes | |
| ACN | 143565 |
| Time | |
| Date | 199004 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : den |
| State Reference | CO |
| Altitude | msl bound lower : 11600 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport |
| Flight Phase | cruise other cruise other descent other |
| Route In Use | arrival other enroute airway : zdv |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 4900 |
| ASRS Report | 143565 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter other non adherence : clearance other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Altitude loss of 400', 12000' assigned (11600') due to severe turbulence, over mountains associated with thunderstorm low level wind shear. Corrected as soon as possible -- aircraft was uncontrollable for approximately 1 min. Fluctuations as much as 40 KTS in airspeed, control movement were full aileron at one time. This was accompanied with mountain wave.
Original NASA ASRS Text
Title: SEVERE TURBULENCE IN DEN AREA. CPR JET SUFFERS LOSS OF ACFT CTL AND EXPERIENCES AN ALT DEVIATION.
Narrative: ALT LOSS OF 400', 12000' ASSIGNED (11600') DUE TO SEVERE TURBULENCE, OVER MOUNTAINS ASSOCIATED WITH TSTM LOW LEVEL WIND SHEAR. CORRECTED ASAP -- ACFT WAS UNCONTROLLABLE FOR APPROX 1 MIN. FLUCTUATIONS AS MUCH AS 40 KTS IN AIRSPEED, CONTROL MOVEMENT WERE FULL AILERON AT ONE TIME. THIS WAS ACCOMPANIED WITH MOUNTAIN WAVE.
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.