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An air carrier MD80 flight crew descends below their assigned altitude when the captain copied the wrong altitude in the clearance.
| Attributes | |
| ACN | 387870 |
| Time | |
| Date | 199712 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 12000 msl bound upper : 15000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tower : bna |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 387870 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : far non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Flight from dfw to dca. I was off frequency while we were given a descent to 11000 ft. Passing about 12000 ft ATC called and asked if we were given a descent to 15000 ft. The captain said that he was given 11000 ft and that is what he read back. The controller said that he may have missed the readback, but that there were no conflicts and that we were to continue to 11000 ft. There was miscom between the aircraft and controller. I'm not certain where the error occurred.
Original NASA ASRS Text
Title: AN ACR MD80 FLC DSNDS BELOW THEIR ASSIGNED ALT WHEN THE CAPT COPIED THE WRONG ALT IN THE CLRNC.
Narrative: FLT FROM DFW TO DCA. I WAS OFF FREQ WHILE WE WERE GIVEN A DSCNT TO 11000 FT. PASSING ABOUT 12000 FT ATC CALLED AND ASKED IF WE WERE GIVEN A DSCNT TO 15000 FT. THE CAPT SAID THAT HE WAS GIVEN 11000 FT AND THAT IS WHAT HE READ BACK. THE CTLR SAID THAT HE MAY HAVE MISSED THE READBACK, BUT THAT THERE WERE NO CONFLICTS AND THAT WE WERE TO CONTINUE TO 11000 FT. THERE WAS MISCOM BTWN THE ACFT AND CTLR. I'M NOT CERTAIN WHERE THE ERROR OCCURRED.
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.