Narrative:

About 3 mi outside the OM we were cleared for the ILS 30 approach. Crossing the OM we contacted the tower. We were instructed to slow to min approach speed as there was an small aircraft X on approach for a crossing runway 25L. We immediately slowed to 120 KIAS, our min speed. About 3 mi final we spotted the small aircraft X. We also spotted an small aircraft Y on downwind for 25L and a helicopter to the left (west) of runway 30. As we neared the runway the tower kept telling us (repeated approximately 3-4 times) that the small aircraft X would cross the intersection before we did, and we were to continue and land. The last time the tower said this we were at about 300' AGL, initiating a miss. From the moment we spotted the small aircraft X until the miss was initiated, the aircraft never moved (relative angles) with respect to us. I was always taught this indicated an incipient collision. Complicating our miss was an small aircraft Z on a departure from 25L (no immediate factor just someone else to watch), and the helicopter, who crossed in front of us while we were about 500' AGL (so was he). I had to delay the miss to avoid the helicopter. If I had followed the tower's instructions and attempted to land, I would have either 1) just missed (less than 100' horizontal) the small aircraft X, or 2) been forced to go around from a very low altitude. Also what would have happened if the small aircraft X decided things were too close and went around? This is not the first such situation I've written to ASRS about this airport. Also the aircraft immediately following us, same company, same type, almost did a go around because of conflicting traffic on 25R.

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Original NASA ASRS Text

Title: COMMUTER LTT MADE A GO AROUND AT 300' WHEN PIC JUDGED TRAFFIC SPACING TO BE TOO CLOSE WITH AN SMA IN FINAL TO AN INTERSECTING RWY.

Narrative: ABOUT 3 MI OUTSIDE THE OM WE WERE CLRED FOR THE ILS 30 APCH. XING THE OM WE CONTACTED THE TWR. WE WERE INSTRUCTED TO SLOW TO MIN APCH SPEED AS THERE WAS AN SMA X ON APCH FOR A XING RWY 25L. WE IMMEDIATELY SLOWED TO 120 KIAS, OUR MIN SPEED. ABOUT 3 MI FINAL WE SPOTTED THE SMA X. WE ALSO SPOTTED AN SMA Y ON DOWNWIND FOR 25L AND A HELI TO THE LEFT (WEST) OF RWY 30. AS WE NEARED THE RWY THE TWR KEPT TELLING US (REPEATED APPROX 3-4 TIMES) THAT THE SMA X WOULD CROSS THE INTXN BEFORE WE DID, AND WE WERE TO CONTINUE AND LAND. THE LAST TIME THE TWR SAID THIS WE WERE AT ABOUT 300' AGL, INITIATING A MISS. FROM THE MOMENT WE SPOTTED THE SMA X UNTIL THE MISS WAS INITIATED, THE ACFT NEVER MOVED (RELATIVE ANGLES) WITH RESPECT TO US. I WAS ALWAYS TAUGHT THIS INDICATED AN INCIPIENT COLLISION. COMPLICATING OUR MISS WAS AN SMA Z ON A DEP FROM 25L (NO IMMEDIATE FACTOR JUST SOMEONE ELSE TO WATCH), AND THE HELI, WHO CROSSED IN FRONT OF US WHILE WE WERE ABOUT 500' AGL (SO WAS HE). I HAD TO DELAY THE MISS TO AVOID THE HELI. IF I HAD FOLLOWED THE TWR'S INSTRUCTIONS AND ATTEMPTED TO LAND, I WOULD HAVE EITHER 1) JUST MISSED (LESS THAN 100' HORIZ) THE SMA X, OR 2) BEEN FORCED TO GO AROUND FROM A VERY LOW ALT. ALSO WHAT WOULD HAVE HAPPENED IF THE SMA X DECIDED THINGS WERE TOO CLOSE AND WENT AROUND? THIS IS NOT THE FIRST SUCH SITUATION I'VE WRITTEN TO ASRS ABOUT THIS ARPT. ALSO THE ACFT IMMEDIATELY FOLLOWING US, SAME COMPANY, SAME TYPE, ALMOST DID A GO AROUND BECAUSE OF CONFLICTING TFC ON 25R.

Data retrieved from NASA's ASRS site as of August 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.