Narrative:

I was training a developmental controller on dallas south position at dfw. My trainee had been doing well and was close to checking out on the 3 east satellite position. However, most of his experience was in a south flow and dfw was in a north flow. We had steady arrs of turboprop and turbojet aircraft for runway 31R. He took a handoff on a VFR small transport X at 3500 ft from over dfw, eastbound. This route of flight was opposite direction with the runway 31R arrs. However, it is a common occurrence. I had incorrectly assumed that my trainee would handle the situation correctly since it appeared that he knew what he was doing. Small transport X was not put on a good heading and I got distracted with the runway 31R final. Air carrier Y got a late descent on final and small transport X passed off of his left without traffic being issued. We had diverging courses but it was a sloppy operation. Air carrier Y initiated his own climb (TCASII equipped) because of an RA. What caused the problem: 1) trainee unfamiliar with north flow airspace and procedures because there was so little north flow during the summer. 2) the trainer (myself) thought that the trainee was smarter than he actually is. 3) I think that the trainee had a bad wkend. 4) I let the trainee go too far because I didn't want to hurt his feelings (tell him what to do).

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Original NASA ASRS Text

Title: CTLR TRAINING IN PROGRESS. ACR Y TCASII RA HAD LTSS FROM SMT X. EVASIVE ACTION TAKEN. SYS ERROR.

Narrative: I WAS TRAINING A DEVELOPMENTAL CTLR ON DALLAS S POS AT DFW. MY TRAINEE HAD BEEN DOING WELL AND WAS CLOSE TO CHKING OUT ON THE 3 E SATELLITE POS. HOWEVER, MOST OF HIS EXPERIENCE WAS IN A S FLOW AND DFW WAS IN A N FLOW. WE HAD STEADY ARRS OF TURBOPROP AND TURBOJET ACFT FOR RWY 31R. HE TOOK A HDOF ON A VFR SMT X AT 3500 FT FROM OVER DFW, EBOUND. THIS RTE OF FLT WAS OPPOSITE DIRECTION WITH THE RWY 31R ARRS. HOWEVER, IT IS A COMMON OCCURRENCE. I HAD INCORRECTLY ASSUMED THAT MY TRAINEE WOULD HANDLE THE SIT CORRECTLY SINCE IT APPEARED THAT HE KNEW WHAT HE WAS DOING. SMT X WAS NOT PUT ON A GOOD HDG AND I GOT DISTRACTED WITH THE RWY 31R FINAL. ACR Y GOT A LATE DSCNT ON FINAL AND SMT X PASSED OFF OF HIS L WITHOUT TFC BEING ISSUED. WE HAD DIVERGING COURSES BUT IT WAS A SLOPPY OP. ACR Y INITIATED HIS OWN CLB (TCASII EQUIPPED) BECAUSE OF AN RA. WHAT CAUSED THE PROB: 1) TRAINEE UNFAMILIAR WITH N FLOW AIRSPACE AND PROCS BECAUSE THERE WAS SO LITTLE N FLOW DURING THE SUMMER. 2) THE TRAINER (MYSELF) THOUGHT THAT THE TRAINEE WAS SMARTER THAN HE ACTUALLY IS. 3) I THINK THAT THE TRAINEE HAD A BAD WKEND. 4) I LET THE TRAINEE GO TOO FAR BECAUSE I DIDN'T WANT TO HURT HIS FEELINGS (TELL HIM WHAT TO DO).

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.