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Flight crew of air carrier widebody transport aircraft were unable to climb as instructed by ATC at high altitude due to turbulence.
| Attributes | |
| ACN | 222577 |
| Time | |
| Date | 199209 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gso |
| State Reference | NC |
| Altitude | msl bound lower : 31500 msl bound upper : 32500 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 22500 flight time type : 210 |
| ASRS Report | 222577 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared to climb from FL310 to FL330. I began climbing at 1000 FPM. Aircraft began losing speed to below normal climb speed at which time aircraft encountered turbulence. We descended from 32500 to 31500 in order to build airspeed back to normal before resuming climb. Atl center was called requesting FL310 until we resumed climb speed. Short time later we were cleared from FL310 to FL330.
Original NASA ASRS Text
Title: FLC OF ACR WDB ACFT WERE UNABLE TO CLB AS INSTRUCTED BY ATC AT HIGH ALT DUE TO TURB.
Narrative: WE WERE CLRED TO CLB FROM FL310 TO FL330. I BEGAN CLBING AT 1000 FPM. ACFT BEGAN LOSING SPD TO BELOW NORMAL CLB SPEED AT WHICH TIME ACFT ENCOUNTERED TURB. WE DSNDED FROM 32500 TO 31500 IN ORDER TO BUILD AIRSPD BACK TO NORMAL BEFORE RESUMING CLB. ATL CTR WAS CALLED REQUESTING FL310 UNTIL WE RESUMED CLB SPD. SHORT TIME LATER WE WERE CLRED FROM FL310 TO FL330.
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.