Narrative:

I was flying approaching the la coliseum; east to west. I had a tcad alert that an aircraft was approaching me from the north and behind my position (from inside the dodger stadium tfr). I gave a position report and did not hear a reply on the common la basin frequency of 123.02. I checked in with lax helicopters and asked if the helicopter had checked in with them. I was told no. I was at an altitude of 700 to 800 feet MSL. I continued west bound and observed the other traffic fly directly underneath me; approximately 100 to 200 feet below me; putting the other aircraft; [aircraft Y;] at about 300 to 400 feet AGL.the other aircraft continued to increase speed and went westbound along the 10 freeway. I contacted another helicopter [aircraft Z] to intercept in order to get a tail number. That helicopter followed the aircraft to a nearby airport where it landed. That tower provided the aircraft tail number and advised about its origin airport.

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Original NASA ASRS Text

Title: A helicopter near the LA Coliseum reported a near miss with another helicopter at 700 feet after that helicopter violated the Dodger TFR then proceeded to land at a nearby airport.

Narrative: I was flying approaching the LA Coliseum; East to West. I had a TCAD alert that an aircraft was approaching me from the North and behind my position (from inside the Dodger Stadium TFR). I gave a position report and did not hear a reply on the common LA basin frequency of 123.02. I checked in with LAX Helicopters and asked if the helicopter had checked in with them. I was told no. I was at an altitude of 700 to 800 feet MSL. I continued West bound and observed the other traffic fly directly underneath me; approximately 100 to 200 feet below me; putting the other aircraft; [aircraft Y;] at about 300 to 400 feet AGL.The other aircraft continued to increase speed and went westbound along the 10 FREEWAY. I contacted another helicopter [aircraft Z] to intercept in order to get a tail number. That helicopter followed the aircraft to a nearby Airport where it landed. That Tower provided the aircraft tail number and advised about its origin airport.

Data retrieved from NASA's ASRS site 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.