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Operational error less than standard separation when controller turns a descending DC8 freighter without coordination with reporter which conflicts with reporter's climbing LR35.
| Attributes | |
| ACN | 373789 |
| Time | |
| Date | 199707 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ape |
| State Reference | OH |
| Altitude | msl bound lower : 15000 msl bound upper : 16000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tower : dfw |
| Operator | other |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | other : other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-8 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 16 |
| ASRS Report | 373789 |
| 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 other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 400 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 was a departure off ffo, heading eastbound, being worked by me. Aircraft #2 was at lck inbound being worked by another controller at a sector north of my airspace. He had coordinated his inbound descending to 11000 ft on a 090 degree heading. He subsequently turned his airplane to a 150 degree heading to miss a cmh departure wbound. He never told me he had issued this turn. I started to climb my departure, he asked to deviation for a thunderstorm. I approved the deviation, and called the other controller since I am very close to his boundary. I also asked him to stop his inbound at 16000 ft and I stopped my departure at 15000 ft because now they are turning toward each other. He tells me he can't, so I expedited my aircraft's climb and separation was lost.
Original NASA ASRS Text
Title: OPERROR LTSS WHEN CTLR TURNS A DSNDING DC8 FREIGHTER WITHOUT COORD WITH RPTR WHICH CONFLICTS WITH RPTR'S CLBING LR35.
Narrative: ACFT #1 WAS A DEP OFF FFO, HDG EBOUND, BEING WORKED BY ME. ACFT #2 WAS AT LCK INBOUND BEING WORKED BY ANOTHER CTLR AT A SECTOR N OF MY AIRSPACE. HE HAD COORDINATED HIS INBOUND DSNDING TO 11000 FT ON A 090 DEG HDG. HE SUBSEQUENTLY TURNED HIS AIRPLANE TO A 150 DEG HDG TO MISS A CMH DEP WBOUND. HE NEVER TOLD ME HE HAD ISSUED THIS TURN. I STARTED TO CLB MY DEP, HE ASKED TO DEV FOR A TSTM. I APPROVED THE DEV, AND CALLED THE OTHER CTLR SINCE I AM VERY CLOSE TO HIS BOUNDARY. I ALSO ASKED HIM TO STOP HIS INBOUND AT 16000 FT AND I STOPPED MY DEP AT 15000 FT BECAUSE NOW THEY ARE TURNING TOWARD EACH OTHER. HE TELLS ME HE CAN'T, SO I EXPEDITED MY ACFT'S CLB AND SEPARATION WAS LOST.
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.