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ARTCC developmental controller failed to provide standard separation between a descending inbound aircraft and climbing outbound aircraft.
| Attributes | |
| ACN | 144354 |
| Time | |
| Date | 199005 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : azo |
| State Reference | MI |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zau |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| ASRS Report | 144354 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12600 vertical : 100 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X was descending into grr airport. Aircraft Y was departing btl westbound. Aircraft X was originally cleared to 9000', but the sparta controller called the kelog controller and told him to stop aircraft X's descent at 13000'. The kelog controller acknowledged the request, but he failed to issue the new clearance. When aircraft X checked on frequency, the sparta controller was busy on a landline and failed to catch the 'descending to 9000'' readback. An operational error occurred at 12000' at this base.
Original NASA ASRS Text
Title: ARTCC DEVELOPMENTAL CTLR FAILED TO PROVIDE STANDARD SEPARATION BETWEEN A DESCENDING INBOUND ACFT AND CLIMBING OUTBOUND ACFT.
Narrative: ACFT X WAS DSNDING INTO GRR ARPT. ACFT Y WAS DEPARTING BTL WBND. ACFT X WAS ORIGINALLY CLRED TO 9000', BUT THE SPARTA CTLR CALLED THE KELOG CTLR AND TOLD HIM TO STOP ACFT X'S DSNT AT 13000'. THE KELOG CTLR ACKNOWLEDGED THE REQUEST, BUT HE FAILED TO ISSUE THE NEW CLRNC. WHEN ACFT X CHKED ON FREQ, THE SPARTA CTLR WAS BUSY ON A LANDLINE AND FAILED TO CATCH THE 'DSNDING TO 9000'' READBACK. AN OPERROR OCCURRED AT 12000' AT THIS BASE.
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.