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An FK10 flight crew overshoots its assigned altitude when the autoflt system fails on the WILBR2 arrival into dfw, tx.
| Attributes | |
| ACN | 439410 |
| Time | |
| Date | 199906 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : addvl |
| State Reference | TX |
| Altitude | msl bound lower : 10700 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : wilbr 2 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 439410 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : multi engine |
| ASRS Report | 439409 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : multi function display unit other flight crewa other flight crewb |
| Resolutory Action | flight crew : overrode automation flight crew : returned to original clearance |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Location: addvl fix on WILBR2. On descent to cross the addvl fix at 11000 ft, the #2 autoplt failed to capture altitude. This happened about the same time we received an autothrottle #2 failure warning. We recognized the altitude deviation at approximately 10700 ft, and the first officer corrected back to 11000 ft. ATC made no remark about the deviation.
Original NASA ASRS Text
Title: AN FK10 FLC OVERSHOOTS ITS ASSIGNED ALT WHEN THE AUTOFLT SYS FAILS ON THE WILBR2 ARR INTO DFW, TX.
Narrative: LOCATION: ADDVL FIX ON WILBR2. ON DSCNT TO CROSS THE ADDVL FIX AT 11000 FT, THE #2 AUTOPLT FAILED TO CAPTURE ALT. THIS HAPPENED ABOUT THE SAME TIME WE RECEIVED AN AUTOTHROTTLE #2 FAILURE WARNING. WE RECOGNIZED THE ALTDEV AT APPROX 10700 FT, AND THE FO CORRECTED BACK TO 11000 FT. ATC MADE NO REMARK ABOUT THE DEV.
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.