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Departure controller climbed aircraft to same altitude as opposite direction overflt. Potential conflict less than standard separation.
| Attributes | |
| ACN | 176601 |
| Time | |
| Date | 199104 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mgm |
| State Reference | AL |
| Altitude | msl bound lower : 6000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mgm |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft |
| Flight Phase | cruise other |
| Route In Use | enroute airway : mgm |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller military : 4 controller non radar : 3 controller radar : 3 |
| ASRS Report | 176601 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Miss Distance | horizontal : 15000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working north departure radar. The above mentioned small aircraft X was overflying my airspace at 6000'. I had an small aircraft Y departing mgm going opp direction to the overflt. The departure was requesting 6000'. For some reason I did not catch the aircraft could be in conflict and I climbed the departure to 6000'. The traffic was moderate. During my scan I noticed both aircraft were in conflict. They were approximately 4 1/2 mi apart at this time. I took evasive action by turning the overflt heading 270 and the departure heading 090 degree. Both aircraft did it immediately and did not report seeing each other. I think I kept the required sep of 3 mi, but would not know for sure unless a darc was pulled. Both aircraft were back on course within 2 mins of me turning them. I really can't explain why I didn't catch this right off the bat but I did feel I was not concentrating like I normally do. There was no complaints by the pilots as of this writing but I felt I better write in.
Original NASA ASRS Text
Title: DEP CTLR CLIMBED ACFT TO SAME ALT AS OPPOSITE DIRECTION OVERFLT. POTENTIAL CONFLICT LESS THAN STANDARD SEPARATION.
Narrative: I WAS WORKING N DEP RADAR. THE ABOVE MENTIONED SMA X WAS OVERFLYING MY AIRSPACE AT 6000'. I HAD AN SMA Y DEPARTING MGM GOING OPP DIRECTION TO THE OVERFLT. THE DEP WAS REQUESTING 6000'. FOR SOME REASON I DID NOT CATCH THE ACFT COULD BE IN CONFLICT AND I CLBED THE DEP TO 6000'. THE TFC WAS MODERATE. DURING MY SCAN I NOTICED BOTH ACFT WERE IN CONFLICT. THEY WERE APPROX 4 1/2 MI APART AT THIS TIME. I TOOK EVASIVE ACTION BY TURNING THE OVERFLT HDG 270 AND THE DEP HDG 090 DEG. BOTH ACFT DID IT IMMEDIATELY AND DID NOT RPT SEEING EACH OTHER. I THINK I KEPT THE REQUIRED SEP OF 3 MI, BUT WOULD NOT KNOW FOR SURE UNLESS A DARC WAS PULLED. BOTH ACFT WERE BACK ON COURSE WITHIN 2 MINS OF ME TURNING THEM. I REALLY CAN'T EXPLAIN WHY I DIDN'T CATCH THIS RIGHT OFF THE BAT BUT I DID FEEL I WAS NOT CONCENTRATING LIKE I NORMALLY DO. THERE WAS NO COMPLAINTS BY THE PLTS AS OF THIS WRITING BUT I FELT I BETTER WRITE IN.
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.