Narrative:

Aircraft 1 through 14000 ft, at about 270 KTS, 15 mi southwest of pmd VOR (on glendale 8 SID). Out of nowhere, came what looked like a korean war era mig fighter (aircraft 2) in a steep bank to the right. We were not given any warning by ZLA. It happened so fast there was no time to react. Aircraft 2 perhaps saw us and took action. ZLA was not able to track aircraft 2, but said it might be based at vny. I believe aircraft 2 did not participate with ATC and must not have had its transponder on. I believe aircraft 2 was operating on a route and was unaware and acting careless in doing so.

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Original NASA ASRS Text

Title: H-25B AND MIG-15 HAD LESS THAN LEGAL SPACING IN ZLA CLASS E AIRSPACE.

Narrative: ACFT 1 THROUGH 14000 FT, AT ABOUT 270 KTS, 15 MI SW OF PMD VOR (ON GLENDALE 8 SID). OUT OF NOWHERE, CAME WHAT LOOKED LIKE A KOREAN WAR ERA MIG FIGHTER (ACFT 2) IN A STEEP BANK TO THE R. WE WERE NOT GIVEN ANY WARNING BY ZLA. IT HAPPENED SO FAST THERE WAS NO TIME TO REACT. ACFT 2 PERHAPS SAW US AND TOOK ACTION. ZLA WAS NOT ABLE TO TRACK ACFT 2, BUT SAID IT MIGHT BE BASED AT VNY. I BELIEVE ACFT 2 DID NOT PARTICIPATE WITH ATC AND MUST NOT HAVE HAD ITS XPONDER ON. I BELIEVE ACFT 2 WAS OPERATING ON A RTE AND WAS UNAWARE AND ACTING CARELESS IN DOING SO.

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.