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Air taxi flight crew experienced moderate to severe turbulence while in climb phase, and requested higher altitude to avoid turbulence. Altdevs were plus or minus 400 ft.
| Attributes | |
| ACN | 303199 |
| Time | |
| Date | 199505 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : gcc |
| State Reference | WY |
| Altitude | msl bound lower : 10000 msl bound upper : 11400 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdv |
| Operator | common carrier : air taxi |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : intermediate altitude climbout : initial |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 2400 flight time type : 800 |
| ASRS Report | 303199 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : exited adverse environment other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
On climb out from gillette airport, we entered IMC, upon which produced moderate to severe turbulence. While attempting to level out at assigned altitude of 11000 ft, the aircraft continued to climb in moderate to severe turbulence to an estimated 11400 ft. We were unable to maintain altitude control due to turbulence. Altitude variations were 300-400 ft either side of 11000 ft. We requested a higher altitude and were given clearance within several mins. I do not believe this caused a conflict. However, it was extremely difficult to control the aircraft. After altitude deviation there seemed to be continued moderate to severe turbulence through climb to FL180. After the flight continued as normal.
Original NASA ASRS Text
Title: AIR TAXI FLC EXPERIENCED MODERATE TO SEVERE TURB WHILE IN CLB PHASE, AND REQUESTED HIGHER ALT TO AVOID TURB. ALTDEVS WERE PLUS OR MINUS 400 FT.
Narrative: ON CLBOUT FROM GILLETTE ARPT, WE ENTERED IMC, UPON WHICH PRODUCED MODERATE TO SEVERE TURB. WHILE ATTEMPTING TO LEVEL OUT AT ASSIGNED ALT OF 11000 FT, THE ACFT CONTINUED TO CLB IN MODERATE TO SEVERE TURB TO AN ESTIMATED 11400 FT. WE WERE UNABLE TO MAINTAIN ALT CTL DUE TO TURB. ALT VARIATIONS WERE 300-400 FT EITHER SIDE OF 11000 FT. WE REQUESTED A HIGHER ALT AND WERE GIVEN CLRNC WITHIN SEVERAL MINS. I DO NOT BELIEVE THIS CAUSED A CONFLICT. HOWEVER, IT WAS EXTREMELY DIFFICULT TO CTL THE ACFT. AFTER ALTDEV THERE SEEMED TO BE CONTINUED MODERATE TO SEVERE TURB THROUGH CLB TO FL180. AFTER THE FLT CONTINUED AS NORMAL.
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.