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Reporter flight acknowledged holding and descent clearance and began to comply. ATC did not intend for reporter flight to descend to 9000', but did not acknowledge readback.
| Attributes | |
| ACN | 120551 |
| Time | |
| Date | 198908 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : djb airport : cle |
| State Reference | OH |
| Altitude | msl bound lower : 9000 msl bound upper : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent other other |
| Route In Use | enroute airway : zob |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 9000 flight time type : 5100 |
| ASRS Report | 120551 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 3700 flight time type : 1500 |
| ASRS Report | 120918 |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
ZOB cleared us to cross wakem intersection at 10000' and 250 KTS. Prior to reaching wakem intersection, we were informed that approach could not take us and we were issued holding instructions to hold at wakem southwest on the arwy at 9000'. After entering the hold, center told us to climb immediately back to 10000' because of conflicting traffic at 9000'. The controller stated that our clearance was only to 10000'. The company aircraft at 9000', also holding at the wakem intersection, confirmed that the controller had in fact cleared us to 9000'. After we leveled at 10000', the controller stated that he was not sure if it was his mistake, but that everything was all right. Because of the # of inbound aircraft to cle through this controller's sector who had to be issued holding instructions, the controller made a mistake that was caught and rectified.
Original NASA ASRS Text
Title: REPORTER FLT ACKNOWLEDGED HOLDING AND DESCENT CLRNC AND BEGAN TO COMPLY. ATC DID NOT INTEND FOR REPORTER FLT TO DESCEND TO 9000', BUT DID NOT ACKNOWLEDGE READBACK.
Narrative: ZOB CLRED US TO CROSS WAKEM INTXN AT 10000' AND 250 KTS. PRIOR TO REACHING WAKEM INTXN, WE WERE INFORMED THAT APCH COULD NOT TAKE US AND WE WERE ISSUED HOLDING INSTRUCTIONS TO HOLD AT WAKEM SW ON THE ARWY AT 9000'. AFTER ENTERING THE HOLD, CENTER TOLD US TO CLB IMMEDIATELY BACK TO 10000' BECAUSE OF CONFLICTING TFC AT 9000'. THE CTLR STATED THAT OUR CLRNC WAS ONLY TO 10000'. THE COMPANY ACFT AT 9000', ALSO HOLDING AT THE WAKEM INTXN, CONFIRMED THAT THE CTLR HAD IN FACT CLRED US TO 9000'. AFTER WE LEVELED AT 10000', THE CTLR STATED THAT HE WAS NOT SURE IF IT WAS HIS MISTAKE, BUT THAT EVERYTHING WAS ALL RIGHT. BECAUSE OF THE # OF INBND ACFT TO CLE THROUGH THIS CTLR'S SECTOR WHO HAD TO BE ISSUED HOLDING INSTRUCTIONS, THE CTLR MADE A MISTAKE THAT WAS CAUGHT AND RECTIFIED.
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.