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Flight crew of an medium large transport failed to maintain assigned altitude due to severe turbulence tripping off the autoplt.
| Attributes | |
| ACN | 334470 |
| Time | |
| Date | 199604 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : txk |
| State Reference | AR |
| Altitude | msl bound lower : 29000 msl bound upper : 30500 |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 334470 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Severe turbulence encounter. Location: txk/270/20. Approaching txk at FL290 aircraft encountered severe turbulence. Autoplt tripped off and aircraft climbed approximately 1500 ft. Notified ZFW, but aircraft was in heavy rain storm with st. Elmos static. When able to transmit and receive center aircraft was back at FL290.
Original NASA ASRS Text
Title: FLC OF AN MLG FAILED TO MAINTAIN ASSIGNED ALT DUE TO SEVERE TURB TRIPPING OFF THE AUTOPLT.
Narrative: SEVERE TURB ENCOUNTER. LOCATION: TXK/270/20. APCHING TXK AT FL290 ACFT ENCOUNTERED SEVERE TURB. AUTOPLT TRIPPED OFF AND ACFT CLBED APPROX 1500 FT. NOTIFIED ZFW, BUT ACFT WAS IN HVY RAIN STORM WITH ST. ELMOS STATIC. WHEN ABLE TO XMIT AND RECEIVE CTR ACFT WAS BACK AT FL290.
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.