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An air carrier first officer reported that moderate turbulence during departure from msp caused an altitude overshoot, due to the autoplt kicking off just as leveloff was achieved.
| Attributes | |
| ACN | 515150 |
| Time | |
| Date | 200106 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : msp.airport |
| State Reference | MN |
| Altitude | msl bound lower : 7000 msl bound upper : 7400 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 80 flight time total : 4300 flight time type : 12 |
| ASRS Report | 515150 |
| Events | |
| Anomaly | altitude deviation : overshoot inflight encounter : turbulence non adherence : clearance non adherence : company policies non adherence : far |
| Resolutory Action | flight crew : returned to assigned altitude |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather Aircraft |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During climb out of msp, we experienced moderate turbulence. The captain instructed me to ensure the flight attendants remained seated. I was advising the flight attendants to remain seated, and the captain was flying. As he leveled the aircraft, the turbulence caused the autoplt to disconnect, leaving the aircraft in a pitched up attitude. The captain immediately took manual control of the plane and leveled the aircraft. As a result of the autoplt disconnect, compounded by the moderate turbulence, the aircraft deviated 400 ft above leveloff altitude.
Original NASA ASRS Text
Title: AN ACR FO RPTED THAT MODERATE TURB DURING DEP FROM MSP CAUSED AN ALT OVERSHOOT, DUE TO THE AUTOPLT KICKING OFF JUST AS LEVELOFF WAS ACHIEVED.
Narrative: DURING CLB OUT OF MSP, WE EXPERIENCED MODERATE TURB. THE CAPT INSTRUCTED ME TO ENSURE THE FLT ATTENDANTS REMAINED SEATED. I WAS ADVISING THE FLT ATTENDANTS TO REMAIN SEATED, AND THE CAPT WAS FLYING. AS HE LEVELED THE ACFT, THE TURB CAUSED THE AUTOPLT TO DISCONNECT, LEAVING THE ACFT IN A PITCHED UP ATTITUDE. THE CAPT IMMEDIATELY TOOK MANUAL CTL OF THE PLANE AND LEVELED THE ACFT. AS A RESULT OF THE AUTOPLT DISCONNECT, COMPOUNDED BY THE MODERATE TURB, THE ACFT DEVIATED 400 FT ABOVE LEVELOFF ALT.
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.