Narrative:

On a sight seeing flight over downtown los angeles on 040 radial off lax VORTAC 11.5 DME 1800-2000 ft heading southeast in left turn, I saw a high wing single engine aircraft Y filling my left windshield. Rolled to the right and started a climb, to avoid a collision. I then attempted to contact lax TRACON to report the incident. Due to heavy radio traffic, I was unable to contact them. I then turned back to the north and proceeded to the van nuys airport and landed.

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Original NASA ASRS Text

Title: NMAC BTWN ATX X ON A SIGHT-SEEING FLT AND SMA Y OVER DOWNTOWN LOS ANGELES.

Narrative: ON A SIGHT SEEING FLT OVER DOWNTOWN LOS ANGELES ON 040 RADIAL OFF LAX VORTAC 11.5 DME 1800-2000 FT HDG SE IN L TURN, I SAW A HIGH WING SINGLE ENG ACFT Y FILLING MY L WINDSHIELD. ROLLED TO THE R AND STARTED A CLB, TO AVOID A COLLISION. I THEN ATTEMPTED TO CONTACT LAX TRACON TO RPT THE INCIDENT. DUE TO HVY RADIO TFC, I WAS UNABLE TO CONTACT THEM. I THEN TURNED BACK TO THE N AND PROCEEDED TO THE VAN NUYS ARPT AND LANDED.

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.