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An air carrier DC9 flight crew descended to 10000 ft and were questioned about their altitude assignment by the ARTCC controller.
| Attributes | |
| ACN | 390190 |
| Time | |
| Date | 199801 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : fgt |
| State Reference | MN |
| Altitude | msl bound lower : 10000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zmp tower : chs |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 180 flight time total : 14000 flight time type : 8000 |
| ASRS Report | 390190 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
During arrival to msp from cid to msp, I accepted a descent clearance via the kaspr arrival. I believed the clearance altitude was 10000 ft. When I leveled at 10000 ft, the center questioned what altitude we were cleared to. I replied that it was possible I had descended to the wrong altitude, but I thought I had heard 10000 ft and had read back 10000 ft. The controller replied that there was no problem and not to worry about the possible conflict. I do not recall any event that could have caused a distraction during the initial clearance and I am still not sure if I was in error or not.
Original NASA ASRS Text
Title: AN ACR DC9 FLC DSNDED TO 10000 FT AND WERE QUESTIONED ABOUT THEIR ALT ASSIGNMENT BY THE ARTCC CTLR.
Narrative: DURING ARR TO MSP FROM CID TO MSP, I ACCEPTED A DSCNT CLRNC VIA THE KASPR ARR. I BELIEVED THE CLRNC ALT WAS 10000 FT. WHEN I LEVELED AT 10000 FT, THE CTR QUESTIONED WHAT ALT WE WERE CLRED TO. I REPLIED THAT IT WAS POSSIBLE I HAD DSNDED TO THE WRONG ALT, BUT I THOUGHT I HAD HEARD 10000 FT AND HAD READ BACK 10000 FT. THE CTLR REPLIED THAT THERE WAS NO PROB AND NOT TO WORRY ABOUT THE POSSIBLE CONFLICT. I DO NOT RECALL ANY EVENT THAT COULD HAVE CAUSED A DISTR DURING THE INITIAL CLRNC AND I AM STILL NOT SURE IF I WAS IN ERROR OR NOT.
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.