Narrative:

Flying from myf to sjc on VFR flight plan. We were cruising in C172 at 8500 ft, just completed hollywood park transition to vny VOR. We had flight advisories entire route. Out of nowhere at 11:30 O'clock position, I noticed aircraft climbing right at us. I was safety pilot in left seat, my partner had goggles on and was flying instruments from right seat. I saw aircraft and said 'my airplane,' grabbing yoke, but never made any correction of significance. I didn't know if I should steer right, as aircraft seemed to be passing through us in same direction I would steer to. A descent and left turn were also out of question. It happened so fast, I felt helpless, unable to veer out of the way. My partner never saw aircraft until she removed goggles and spotted him at 4 O'clock position, flying away at same altitude. I saw the pilot of second plane had yellow shirt on. I know he never saw us. ATC said aircraft was not talking to him, nor anyone else, nor was transponder on. He never saw him to call traffic for us. 1) classic VFR day -- perhaps my head was in cockpit too much, checking maps and navigation information, us looking for traffic. 2) too much reliance on ATC for help. I'm PIC and was ultimately responsible. 3) second plane was flying at exact angle of left window corner that blocked my vision. I never saw him.

Google
 

Original NASA ASRS Text

Title: NMAC BTWN A C172 IN LEVEL FLT AT 8500 FT AND A BEECH BONANZA ON AN INTERSECTING FLT PATH PASSING AS CLOSE AS 150 FT OF EACH OTHER.

Narrative: FLYING FROM MYF TO SJC ON VFR FLT PLAN. WE WERE CRUISING IN C172 AT 8500 FT, JUST COMPLETED HOLLYWOOD PARK TRANSITION TO VNY VOR. WE HAD FLT ADVISORIES ENTIRE RTE. OUT OF NOWHERE AT 11:30 O'CLOCK POS, I NOTICED ACFT CLBING RIGHT AT US. I WAS SAFETY PLT IN L SEAT, MY PARTNER HAD GOGGLES ON AND WAS FLYING INSTS FROM R SEAT. I SAW ACFT AND SAID 'MY AIRPLANE,' GRABBING YOKE, BUT NEVER MADE ANY CORRECTION OF SIGNIFICANCE. I DIDN'T KNOW IF I SHOULD STEER R, AS ACFT SEEMED TO BE PASSING THROUGH US IN SAME DIRECTION I WOULD STEER TO. A DSCNT AND L TURN WERE ALSO OUT OF QUESTION. IT HAPPENED SO FAST, I FELT HELPLESS, UNABLE TO VEER OUT OF THE WAY. MY PARTNER NEVER SAW ACFT UNTIL SHE REMOVED GOGGLES AND SPOTTED HIM AT 4 O'CLOCK POS, FLYING AWAY AT SAME ALT. I SAW THE PLT OF SECOND PLANE HAD YELLOW SHIRT ON. I KNOW HE NEVER SAW US. ATC SAID ACFT WAS NOT TALKING TO HIM, NOR ANYONE ELSE, NOR WAS XPONDER ON. HE NEVER SAW HIM TO CALL TFC FOR US. 1) CLASSIC VFR DAY -- PERHAPS MY HEAD WAS IN COCKPIT TOO MUCH, CHKING MAPS AND NAV INFO, US LOOKING FOR TFC. 2) TOO MUCH RELIANCE ON ATC FOR HELP. I'M PIC AND WAS ULTIMATELY RESPONSIBLE. 3) SECOND PLANE WAS FLYING AT EXACT ANGLE OF L WINDOW CORNER THAT BLOCKED MY VISION. I NEVER SAW HIM.

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.