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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier flight crew overshot their assigned altitude in descent. Altitude automatic capture did not function as anticipated.
| Attributes | |
| ACN | 404560 |
| Time | |
| Date | 199806 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : vhp airport : ind |
| State Reference | IN |
| Altitude | msl bound lower : 9600 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : zid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 12000 flight time type : 7500 |
| ASRS Report | 404560 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Descent from 15000 ft to 10000 ft. Overshot 10000 ft and descended to 9600 ft and recovered to 10000 ft. Autoplt was armed for leveloff at 10000 ft and failed to level off. Disconnected autoplt and executed a manually flown leveloff at 10000 ft. Improved reliability of the autoplt system and less reliance on the autoplt for leveloff may help prevent future altitude excursions.
Original NASA ASRS Text
Title: ACR FLC OVERSHOT THEIR ASSIGNED ALT IN DSCNT. ALT AUTO CAPTURE DID NOT FUNCTION AS ANTICIPATED.
Narrative: DSCNT FROM 15000 FT TO 10000 FT. OVERSHOT 10000 FT AND DSNDED TO 9600 FT AND RECOVERED TO 10000 FT. AUTOPLT WAS ARMED FOR LEVELOFF AT 10000 FT AND FAILED TO LEVEL OFF. DISCONNECTED AUTOPLT AND EXECUTED A MANUALLY FLOWN LEVELOFF AT 10000 FT. IMPROVED RELIABILITY OF THE AUTOPLT SYS AND LESS RELIANCE ON THE AUTOPLT FOR LEVELOFF MAY HELP PREVENT FUTURE ALT EXCURSIONS.
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.