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The flight crew of an air carrier medium large transport descended below their assigned altitude when the first officer forgot the altitude and had to be reminded by the altitude alerter.
| Attributes | |
| ACN | 385720 |
| Time | |
| Date | 199711 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : tpa |
| State Reference | FL |
| Altitude | msl bound lower : 5600 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa tower : las |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 230 |
| ASRS Report | 385720 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified 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:
Aircraft was descending to land at tampa international airport. I was PF when altitude alerter sounded at 5700 ft MSL. I thought clearance altitude was 4000 ft while altitude alerter was still set to 6000 ft. PNF still convinced 6000 ft was last clearance. We climbed back to 6000 ft and subsequently received clearance to 3000 ft. No conflict noted and no controller call as to deviation. Aircraft descended to 5600 ft MSL before returning to 6000 ft.
Original NASA ASRS Text
Title: THE FLC OF AN ACR MLG DSNDED BELOW THEIR ASSIGNED ALT WHEN THE FO FORGOT THE ALT AND HAD TO BE REMINDED BY THE ALT ALERTER.
Narrative: ACFT WAS DSNDING TO LAND AT TAMPA INTL ARPT. I WAS PF WHEN ALT ALERTER SOUNDED AT 5700 FT MSL. I THOUGHT CLRNC ALT WAS 4000 FT WHILE ALT ALERTER WAS STILL SET TO 6000 FT. PNF STILL CONVINCED 6000 FT WAS LAST CLRNC. WE CLBED BACK TO 6000 FT AND SUBSEQUENTLY RECEIVED CLRNC TO 3000 FT. NO CONFLICT NOTED AND NO CTLR CALL AS TO DEV. ACFT DSNDED TO 5600 FT MSL BEFORE RETURNING TO 6000 FT.
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.