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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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EMB120 descending to 4000 ft overshoots to 3500 ft. Autoplt did not capture altitude. It had been written up previously as occasionally not capturing altitude.
| Attributes | |
| ACN | 356760 |
| Time | |
| Date | 199612 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : tys |
| State Reference | TN |
| Altitude | msl bound lower : 3500 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tys |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent 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 : 250 flight time total : 7500 flight time type : 4500 |
| ASRS Report | 356760 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera 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:
Upon descent into tys we broke out into VMC conditions and were looking for the airport. I was the PF with the autoplt engaged. The autoplt did not capture 4000 ft, (it had been written up for not capturing altitudes occasionally the day before, maintenance checked it and it checked out good). We corrected as ATC informed us to check our altitude. They said it wasn't a problem but we decided to fill out a NASA report anyway.
Original NASA ASRS Text
Title: EMB120 DSNDING TO 4000 FT OVERSHOOTS TO 3500 FT. AUTOPLT DID NOT CAPTURE ALT. IT HAD BEEN WRITTEN UP PREVIOUSLY AS OCCASIONALLY NOT CAPTURING ALT.
Narrative: UPON DSCNT INTO TYS WE BROKE OUT INTO VMC CONDITIONS AND WERE LOOKING FOR THE ARPT. I WAS THE PF WITH THE AUTOPLT ENGAGED. THE AUTOPLT DID NOT CAPTURE 4000 FT, (IT HAD BEEN WRITTEN UP FOR NOT CAPTURING ALTS OCCASIONALLY THE DAY BEFORE, MAINT CHKED IT AND IT CHKED OUT GOOD). WE CORRECTED AS ATC INFORMED US TO CHK OUR ALT. THEY SAID IT WASN'T A PROB BUT WE DECIDED TO FILL OUT A NASA RPT ANYWAY.
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.