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Altitude deviation altitude overshot in descent when aircraft equipment operating procedures not followed.
| Attributes | |
| ACN | 264689 |
| Time | |
| Date | 199402 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : san |
| State Reference | CA |
| Altitude | msl bound lower : 11600 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : san tower : dca |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : cfi pilot : atp pilot : instrument pilot : flight engineer |
| Experience | flight time last 90 days : 120 flight time total : 8000 flight time type : 300 |
| ASRS Report | 264689 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : published procedure non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While flying flight from msp to san we were getting numerous altitude changes and TA's. The captain was flying. We were cleared to 12000 ft. I saw he had selected 11900 ft but was reaching up to correct it. I proceeded to get the new ATIS. The captain set 12000 ft in the altitude window, but on the A-320, setting a new altitude when within 300 ft of the old altitude puts you in a vertical speed mode and you will miss your altitude. We caught it and corrected at 11600 ft -- 400 ft below assigned. The controller did not indicate a conflict or any concern.
Original NASA ASRS Text
Title: ALTDEV ALT OVERSHOT IN DSCNT WHEN ACFT EQUIP OPERATING PROCS NOT FOLLOWED.
Narrative: WHILE FLYING FLT FROM MSP TO SAN WE WERE GETTING NUMEROUS ALT CHANGES AND TA'S. THE CAPT WAS FLYING. WE WERE CLRED TO 12000 FT. I SAW HE HAD SELECTED 11900 FT BUT WAS REACHING UP TO CORRECT IT. I PROCEEDED TO GET THE NEW ATIS. THE CAPT SET 12000 FT IN THE ALT WINDOW, BUT ON THE A-320, SETTING A NEW ALT WHEN WITHIN 300 FT OF THE OLD ALT PUTS YOU IN A VERT SPD MODE AND YOU WILL MISS YOUR ALT. WE CAUGHT IT AND CORRECTED AT 11600 FT -- 400 FT BELOW ASSIGNED. THE CTLR DID NOT INDICATE A CONFLICT OR ANY CONCERN.
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.