Light Sport Aircraft
Flight Crew Sport / Recreational
Flight Crew Last 90 Days 7; Flight Crew Total 155
Communication Breakdown
Conflict NMAC
General None Reported / Taken
Airspace Structure; Human Factors; Procedure
Another small GA aircraft (possibly a Grumman from radio traffic); passed above my starboard wing from my 4 o'clock to my 10 o'clock at a vertical separation I would guess at being less than 200 FT. From radio traffic; I believe the other pilot was not aware of my position before crossing almost directly above me. My speed was approximately 90 KTS and I had recently made my radio call at approximately 10 miles out. The other aircraft seemed to be traveling much faster than my aircraft.
Light Sport Aircraft pilot reports an NMAC with a low wing aircraft at 3;100 FT near CCR. The other aircraft passed overhead from the 4 o'clock position and apparently did not see the reporter.