Narrative:

On jul/fri/03, our B757 was on a visual approach to runway 18R at dfw with check airman flying from the right seat. Approach warned us of traffic at our left 10 O'clock position slightly low approaching. Our TCASII idented the traffic in the same spot. I began searching for the traffic while helping PIC configure our jet. When I saw the F100, he was in a hard left turn showing me his belly and approaching us rapidly. Our TCASII issued a TA followed quickly by an RA. I told the check airman to stop descending, do not descend anymore and prepared to take the controls. The F100, who apparently was on approach to an east side runway, came within about 300 ft of us. At one point I thought he was going to go under us at which point I would have taken control of our B757. The F100 finally got enough left turn in to start opening up some spacing on us, and I directed check airman to resume his descent. At the same time we were switched to tower and after taking a deep breath, I checked in, remarked on the F100, and received landing clearance. During the entire exercise, ATC provided information and warnings, and, a controller on the ATC hotline in operations gave me all the details and explanation from his end that I needed. The F100 apparently was looking at the west side runways when they were cleared to an east side runway. By the grace of god, and with help from ATC and TCASII, we came no closer than 300 ft, 'my estimate.' none of my passenger remarked about this incident when we said goodbye at the door.

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Original NASA ASRS Text

Title: A B757 FLT CREW RECEIVES A TCASII TA-RA FROM AN F100 WHILE ON APCH AT DFW.

Narrative: ON JUL/FRI/03, OUR B757 WAS ON A VISUAL APCH TO RWY 18R AT DFW WITH CHK AIRMAN FLYING FROM THE R SEAT. APCH WARNED US OF TFC AT OUR L 10 O'CLOCK POS SLIGHTLY LOW APCHING. OUR TCASII IDENTED THE TFC IN THE SAME SPOT. I BEGAN SEARCHING FOR THE TFC WHILE HELPING PIC CONFIGURE OUR JET. WHEN I SAW THE F100, HE WAS IN A HARD L TURN SHOWING ME HIS BELLY AND APCHING US RAPIDLY. OUR TCASII ISSUED A TA FOLLOWED QUICKLY BY AN RA. I TOLD THE CHK AIRMAN TO STOP DSNDING, DO NOT DSND ANYMORE AND PREPARED TO TAKE THE CTLS. THE F100, WHO APPARENTLY WAS ON APCH TO AN E SIDE RWY, CAME WITHIN ABOUT 300 FT OF US. AT ONE POINT I THOUGHT HE WAS GOING TO GO UNDER US AT WHICH POINT I WOULD HAVE TAKEN CTL OF OUR B757. THE F100 FINALLY GOT ENOUGH L TURN IN TO START OPENING UP SOME SPACING ON US, AND I DIRECTED CHK AIRMAN TO RESUME HIS DSCNT. AT THE SAME TIME WE WERE SWITCHED TO TWR AND AFTER TAKING A DEEP BREATH, I CHKED IN, REMARKED ON THE F100, AND RECEIVED LNDG CLRNC. DURING THE ENTIRE EXERCISE, ATC PROVIDED INFO AND WARNINGS, AND, A CTLR ON THE ATC HOTLINE IN OPS GAVE ME ALL THE DETAILS AND EXPLANATION FROM HIS END THAT I NEEDED. THE F100 APPARENTLY WAS LOOKING AT THE W SIDE RWYS WHEN THEY WERE CLRED TO AN E SIDE RWY. BY THE GRACE OF GOD, AND WITH HELP FROM ATC AND TCASII, WE CAME NO CLOSER THAN 300 FT, 'MY ESTIMATE.' NONE OF MY PAX REMARKED ABOUT THIS INCIDENT WHEN WE SAID GOODBYE AT THE DOOR.

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.