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An S80 flight crew allegedly mistakes their clearance altitude and descends through their ATC assigned altitude 10 mi south of ord, il.
| Attributes | |
| ACN | 481440 |
| Time | |
| Date | 200008 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | msl bound lower : 6000 msl bound upper : 7000 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : c90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 481440 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : returned to assigned altitude |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Airspace Structure ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Location: 10 mi south ord on vector, arrival on vectors for downwind ord, we were cleared to descend to 6000 ft. At 6500 ft approach control asked us our altitude. We advised them '6500 ft for 6000 ft.' we were advised that our clearance was for 7000 ft and to climb and maintain 7000 ft.' the captain and I were confident that we understood, read back, and pointed to the proper altitude of 6000 ft when we received the original clearance. We still are.
Original NASA ASRS Text
Title: AN S80 FLC ALLEGEDLY MISTAKES THEIR CLRNC ALT AND DSNDS THROUGH THEIR ATC ASSIGNED ALT 10 MI S OF ORD, IL.
Narrative: LOCATION: 10 MI S ORD ON VECTOR, ARR ON VECTORS FOR DOWNWIND ORD, WE WERE CLRED TO DSND TO 6000 FT. AT 6500 FT APCH CTL ASKED US OUR ALT. WE ADVISED THEM '6500 FT FOR 6000 FT.' WE WERE ADVISED THAT OUR CLRNC WAS FOR 7000 FT AND TO CLB AND MAINTAIN 7000 FT.' THE CAPT AND I WERE CONFIDENT THAT WE UNDERSTOOD, READ BACK, AND POINTED TO THE PROPER ALT OF 6000 FT WHEN WE RECEIVED THE ORIGINAL CLRNC. WE STILL ARE.
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.