Act controller, providing OJT, takes sector to resolve conflict sits, but misses one.

Attributes
ACN	527951
Time
Date	200110
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : gnl.vor
State Reference	TX
Altitude	msl single value : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Skylane 182/RG Turbo Skylane/RG
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : act.tracon
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach instruction : instructor
Experience	controller radar : 7 controller time certified in position1 : 7
ASRS Report	527951
Person 2
Affiliation	government : faa
Function	controller : approach instruction : trainee
Events
Anomaly	conflict : airborne less severe non adherence : published procedure non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	none taken : detected after the fact
Miss Distance	horizontal : 10000 vertical : 0
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Intra Facility Coordination Failure

Narrative:

During training, the traffic increased to more than the developmental could handle, so I took over. As the traffic IFR and VFR kept increasing, I was distraction by aircraft conflicting in the north and northeast areas of my airspace (2 separate sits) that I failed to catch the third conflict until separation was lost. The developmental pointed out the situation after the aircraft had passed. I was sitting to the side of the scope and not looking directly at it which may have distraction/disrupted my scan.

Original NASA ASRS Text

Title: ACT CTLR, PROVIDING OJT, TAKES SECTOR TO RESOLVE CONFLICT SITS, BUT MISSES ONE.

Narrative: DURING TRAINING, THE TFC INCREASED TO MORE THAN THE DEVELOPMENTAL COULD HANDLE, SO I TOOK OVER. AS THE TFC IFR AND VFR KEPT INCREASING, I WAS DISTR BY ACFT CONFLICTING IN THE N AND NE AREAS OF MY AIRSPACE (2 SEPARATE SITS) THAT I FAILED TO CATCH THE THIRD CONFLICT UNTIL SEPARATION WAS LOST. THE DEVELOPMENTAL POINTED OUT THE SIT AFTER THE ACFT HAD PASSED. I WAS SITTING TO THE SIDE OF THE SCOPE AND NOT LOOKING DIRECTLY AT IT WHICH MAY HAVE DISTR/DISRUPTED MY SCAN.

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.