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Air carrier received and read back descent clearance to occupied altitude. Error corrected by controller. Operational deviation.
| Attributes | |
| ACN | 92265 |
| Time | |
| Date | 198808 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : msp |
| State Reference | MN |
| Altitude | msl bound lower : 6000 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : msp |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11400 flight time type : 6000 |
| ASRS Report | 92265 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
We were level at 10000' when given a clearance to 6000'. The captain acknowledged the clearance and read back 6000'. I'm absolutely sure of this. In the descent at about 6500' the controller stated we were cleared to 7000', climb to 7000', make left turn to 220 degree. We complied and the captain said to the controller 'we were cleared to 6000 and that's what I read back.' the controller then stated 'whatever I cleared you to, maintain 7000'.' the controller was very busy this entire time and even asked several aircraft to be patient because he was working 2 frequencys. The frequency we were on was much too busy for him to be working another one also.
Original NASA ASRS Text
Title: ACR RECEIVED AND READ BACK DESCENT CLRNC TO OCCUPIED ALT. ERROR CORRECTED BY CTLR. OPERATIONAL DEVIATION.
Narrative: WE WERE LEVEL AT 10000' WHEN GIVEN A CLRNC TO 6000'. THE CAPT ACKNOWLEDGED THE CLRNC AND READ BACK 6000'. I'M ABSOLUTELY SURE OF THIS. IN THE DSCNT AT ABOUT 6500' THE CTLR STATED WE WERE CLRED TO 7000', CLB TO 7000', MAKE L TURN TO 220 DEG. WE COMPLIED AND THE CAPT SAID TO THE CTLR 'WE WERE CLRED TO 6000 AND THAT'S WHAT I READ BACK.' THE CTLR THEN STATED 'WHATEVER I CLRED YOU TO, MAINTAIN 7000'.' THE CTLR WAS VERY BUSY THIS ENTIRE TIME AND EVEN ASKED SEVERAL ACFT TO BE PATIENT BECAUSE HE WAS WORKING 2 FREQS. THE FREQ WE WERE ON WAS MUCH TOO BUSY FOR HIM TO BE WORKING ANOTHER ONE ALSO.
Data retrieved from NASA's ASRS site as of August 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.