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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Aircraft equipment problem. Autoplt descended uncommanded. Flight crew disconnected it and climbed back to assigned altitude. Medium large transport.
| Attributes | |
| ACN | 339415 |
| Time | |
| Date | 199606 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 4650 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : msp |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| 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 |
| Experience | flight time last 90 days : 120 flight time total : 13000 flight time type : 10000 |
| ASRS Report | 339415 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : overcame equipment problem |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Autoplt descended at 400 FPM (uncommanded). We were maintaining 5000 ft. We caught it at 4650 ft and climbed back to 5000 ft. Autoplt was written up and replaced on arrival.
Original NASA ASRS Text
Title: ACFT EQUIP PROB. AUTOPLT DSNDED UNCOMMANDED. FLC DISCONNECTED IT AND CLBED BACK TO ASSIGNED ALT. MLG.
Narrative: AUTOPLT DSNDED AT 400 FPM (UNCOMMANDED). WE WERE MAINTAINING 5000 FT. WE CAUGHT IT AT 4650 FT AND CLBED BACK TO 5000 FT. AUTOPLT WAS WRITTEN UP AND REPLACED ON ARR.
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.