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A controller described conflict event that resulted from a miscommunication during the combining of positions for late night operations.
| Attributes | |
| ACN | 863305 |
| Time | |
| Date | 200912 |
| Local Time Of Day | 0001-0600 |
| Place | |
| Locale Reference | ZOB.ARTCC |
| State Reference | OH |
| Aircraft 1 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | Cruise |
| Flight Plan | IFR |
| Person 1 | |
| Function | Enroute |
| Person 2 | |
| Function | Enroute |
| Events | |
| Anomaly | ATC Issue All Types |
Narrative:
The supervisor told air sector to set up for a normal combining for the mid-shift. I; and the air sector; thought the supervisor was to type the computer commands momentarily. I handed off and switched frequency of air carrier X to air sector (the where ckb combines to). The aircraft did not return to my frequency. Minutes later; air sector advised me that ckb was still open. It was at this time I heard the supervisor state 'false alarm; I'll move ckb now'. I guess he had delayed the computer commands as he perceived some heavier traffic. Since that sector is right next to ckb sector; and I did not get the aircraft back; I figured that air either pointed out the aircraft to ckb or handed the aircraft off to ckb. I was advised about fifteen minutes later that ckb only had a limited data block on air carrier X; and had descended air carrier Y through air carrier X's altitude. The air sector had turned air carrier X and ckb sector turned air carrier Y to ensure separation. Recommend keep handing off the aircraft to the 'normal' sector number until you see the aircraft flash to the combined sector.
Original NASA ASRS Text
Title: A controller described conflict event that resulted from a miscommunication during the combining of positions for late night operations.
Narrative: The supervisor told air sector to set up for a normal combining for the mid-shift. I; and the air sector; thought the supervisor was to type the computer commands momentarily. I handed off and switched frequency of Air Carrier X to air sector (the where CKB combines to). The aircraft did not return to my frequency. Minutes later; air sector advised me that CKB was still open. It was at this time I heard the supervisor state 'False alarm; I'll move CKB now'. I guess he had delayed the computer commands as he perceived some heavier traffic. Since that sector is right next to CKB sector; and I did not get the aircraft back; I figured that air either pointed out the aircraft to CKB or handed the aircraft off to CKB. I was advised about fifteen minutes later that CKB only had a limited data block on Air Carrier X; and had descended Air Carrier Y through Air Carrier X's altitude. The air sector had turned Air Carrier X and CKB sector turned Air Carrier Y to ensure separation. Recommend keep handing off the aircraft to the 'normal' sector number until you see the aircraft flash to the combined sector.
Data retrieved from NASA's ASRS site as of April 2012 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.