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Flight crew of an light transport overshot descent assigned altitude due to the autoplt involuntarily disengaging.
| Attributes | |
| ACN | 333190 |
| Time | |
| Date | 199604 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ocf |
| State Reference | FL |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zjx tower : oma |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 40 flight time total : 12500 flight time type : 400 |
| ASRS Report | 333190 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| 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:
We were in a descent from FL240 to our new assigned altitude on autoplt. The altitude preselect disengaged and we descended 500 ft below our assigned altitude. Upon noticing this, we climbed back to our assigned altitude.
Original NASA ASRS Text
Title: FLC OF AN LTT OVERSHOT DSCNT ASSIGNED ALT DUE TO THE AUTOPLT INVOLUNTARILY DISENGAGING.
Narrative: WE WERE IN A DSCNT FROM FL240 TO OUR NEW ASSIGNED ALT ON AUTOPLT. THE ALT PRESELECT DISENGAGED AND WE DSNDED 500 FT BELOW OUR ASSIGNED ALT. UPON NOTICING THIS, WE CLBED BACK TO OUR ASSIGNED 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.