Narrative:

On 9/thu/90 at approximately XA28 local time, I was told by yum tower to report a 2 mi right base to runway 26. I proceeded to a close in right base after hearing the tower tell an aircraft on approximately a 4 mi final for 26 that the small transport would be on a close in and right base for runway 26. Upon reaching the 2 mi right base I was cleared to land on runway 26. I was also asked if I had the mlt in sight that was on a left base for runway 21. I replied that I had a visibility on the mlt I continued on right base for 26 and upon closing on the mlt I could see that he would pass below M, so I maintained my altitude. The mlt did indeed pass under me approximately 200-300'. A couple of seconds later I initiated a turn to final to runway 26. I heard the tower tell the medium large transport that they saw the mlt was starting a go around. The mlt replied that he had to do a go around to 'avoid the civil aircraft.' at this time he was in my blind spot and I did not have visibility on him. I proceeded to land (which required a very steep rate of descent). The mlt continued to proceed on his go around. I assumed he was climbing, so I had no idea where he was, or how close we came together. I know it had to be closer than a safe sep. It is my personal opinion that the tower should have assured more sep between my aircraft and the mlt.

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Original NASA ASRS Text

Title: MULTIPLE RWY OPERATION AND SMT LNDG RWY 26 HAS NMAC IN TRAFFIC PATTERN WITH MLT ON BASE LEG FOR RWY 21.

Narrative: ON 9/THU/90 AT APPROX XA28 LCL TIME, I WAS TOLD BY YUM TWR TO RPT A 2 MI RIGHT BASE TO RWY 26. I PROCEEDED TO A CLOSE IN RIGHT BASE AFTER HEARING THE TWR TELL AN ACFT ON APPROX A 4 MI FINAL FOR 26 THAT THE SMT WOULD BE ON A CLOSE IN AND RIGHT BASE FOR RWY 26. UPON REACHING THE 2 MI RIGHT BASE I WAS CLRED TO LAND ON RWY 26. I WAS ALSO ASKED IF I HAD THE MLT IN SIGHT THAT WAS ON A LEFT BASE FOR RWY 21. I REPLIED THAT I HAD A VIS ON THE MLT I CONTINUED ON RIGHT BASE FOR 26 AND UPON CLOSING ON THE MLT I COULD SEE THAT HE WOULD PASS BELOW M, SO I MAINTAINED MY ALT. THE MLT DID INDEED PASS UNDER ME APPROX 200-300'. A COUPLE OF SECS LATER I INITIATED A TURN TO FINAL TO RWY 26. I HEARD THE TWR TELL THE MLG THAT THEY SAW THE MLT WAS STARTING A GAR. THE MLT REPLIED THAT HE HAD TO DO A GAR TO 'AVOID THE CIVIL ACFT.' AT THIS TIME HE WAS IN MY BLIND SPOT AND I DID NOT HAVE VIS ON HIM. I PROCEEDED TO LAND (WHICH REQUIRED A VERY STEEP RATE OF DSNT). THE MLT CONTINUED TO PROCEED ON HIS GAR. I ASSUMED HE WAS CLBING, SO I HAD NO IDEA WHERE HE WAS, OR HOW CLOSE WE CAME TOGETHER. I KNOW IT HAD TO BE CLOSER THAN A SAFE SEP. IT IS MY PERSONAL OPINION THAT THE TWR SHOULD HAVE ASSURED MORE SEP BTWN MY ACFT AND THE MLT.

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.