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Flight crew of a dehavilland dash 8 overshot altitude during descent due to lack of monitoring the FMC aircraft control.
| Attributes | |
| ACN | 439080 |
| Time | |
| Date | 199905 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : pdx.vor |
| State Reference | OR |
| Altitude | msl bound lower : 4600 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : p80.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 5800 flight time type : 3500 |
| ASRS Report | 439080 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to assigned airspace |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
First officer was flying leg. He was told to descend and maintain 5000 ft. He set up the flight director to capture altitude. Somehow it failed to capture altitude. We recognized the altitude bust at 4600 ft. He grabbed the aircraft and brought it back to 5000 ft. The first officer was very grave over the altitude bust. I plan on being more diligent in watching my first officer's flying.
Original NASA ASRS Text
Title: FLC OF A DEHAVILLAND DASH 8 OVERSHOT ALT DURING DSCNT DUE TO LACK OF MONITORING THE FMC ACFT CTL.
Narrative: FO WAS FLYING LEG. HE WAS TOLD TO DSND AND MAINTAIN 5000 FT. HE SET UP THE FLT DIRECTOR TO CAPTURE ALT. SOMEHOW IT FAILED TO CAPTURE ALT. WE RECOGNIZED THE ALT BUST AT 4600 FT. HE GRABBED THE ACFT AND BROUGHT IT BACK TO 5000 FT. THE FO WAS VERY GRAVE OVER THE ALT BUST. I PLAN ON BEING MORE DILIGENT IN WATCHING MY FO'S FLYING.
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.