Narrative:

I was inbound to rhv from lvk at about XA45 on apr/sat/03, and reported inbound over calaveras reservoir, which is standard procedure when arriving from the north. The tower acknowledged my position and told me to report on a 2 mi 45 degree entry for right traffic to runway 31R. I had my transponder on 1200, and it was set to altitude report, and had my landing light and strobes turned on. When I was 2 NM out (based on my GPS), I called the tower with my position, but the tower did not acknowledge my position report. About 10 seconds later, I saw a green cessna coming straight at me, only a little below my altitude and climbing nose high. The cessna was below my horizon hidden by the backgnd clutter, and probably was less than 300 ft away from me. I immediately banked hard to the left and pushed the nose down using all the control movement possible. The cessna passed just above and to the right of my plane. After regaining my composure, I called the tower and reported that I was now 1 1/2 mi out on the 45 degree for runway 31R. The tower replied to me 'aircraft X stand by.' the next communication, as I recall, was when I reported downwind for runway 31R. The landing went smoothly without any problems. Never during my approach did the tower inform me of any traffic coming my direction, nor do I recall the tower inform any departing cessna that there was a piper cub inbound from the north. I believe the tower's radar was working at the time, based on a transmission I heard regarding another plane's location. There was relatively little aircraft activity at this time of the morning. Reid hillview becomes very busy later in the morning. I feel the tower should have informed me and the cessna of each other's position, because we were well inside their airspace, they were not very busy, and they had radar.

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Original NASA ASRS Text

Title: PA12 LNDG RHV EXPERIENCED NMAC WITH CESSNA.

Narrative: I WAS INBOUND TO RHV FROM LVK AT ABOUT XA45 ON APR/SAT/03, AND RPTED INBOUND OVER CALAVERAS RESERVOIR, WHICH IS STANDARD PROC WHEN ARRIVING FROM THE N. THE TWR ACKNOWLEDGED MY POS AND TOLD ME TO RPT ON A 2 MI 45 DEG ENTRY FOR R TFC TO RWY 31R. I HAD MY XPONDER ON 1200, AND IT WAS SET TO ALT RPT, AND HAD MY LNDG LIGHT AND STROBES TURNED ON. WHEN I WAS 2 NM OUT (BASED ON MY GPS), I CALLED THE TWR WITH MY POS, BUT THE TWR DID NOT ACKNOWLEDGE MY POS RPT. ABOUT 10 SECONDS LATER, I SAW A GREEN CESSNA COMING STRAIGHT AT ME, ONLY A LITTLE BELOW MY ALT AND CLBING NOSE HIGH. THE CESSNA WAS BELOW MY HORIZON HIDDEN BY THE BACKGND CLUTTER, AND PROBABLY WAS LESS THAN 300 FT AWAY FROM ME. I IMMEDIATELY BANKED HARD TO THE L AND PUSHED THE NOSE DOWN USING ALL THE CTL MOVEMENT POSSIBLE. THE CESSNA PASSED JUST ABOVE AND TO THE R OF MY PLANE. AFTER REGAINING MY COMPOSURE, I CALLED THE TWR AND RPTED THAT I WAS NOW 1 1/2 MI OUT ON THE 45 DEG FOR RWY 31R. THE TWR REPLIED TO ME 'ACFT X STAND BY.' THE NEXT COM, AS I RECALL, WAS WHEN I RPTED DOWNWIND FOR RWY 31R. THE LNDG WENT SMOOTHLY WITHOUT ANY PROBS. NEVER DURING MY APCH DID THE TWR INFORM ME OF ANY TFC COMING MY DIRECTION, NOR DO I RECALL THE TWR INFORM ANY DEPARTING CESSNA THAT THERE WAS A PIPER CUB INBOUND FROM THE N. I BELIEVE THE TWR'S RADAR WAS WORKING AT THE TIME, BASED ON A XMISSION I HEARD REGARDING ANOTHER PLANE'S LOCATION. THERE WAS RELATIVELY LITTLE ACFT ACTIVITY AT THIS TIME OF THE MORNING. REID HILLVIEW BECOMES VERY BUSY LATER IN THE MORNING. I FEEL THE TWR SHOULD HAVE INFORMED ME AND THE CESSNA OF EACH OTHER'S POS, BECAUSE WE WERE WELL INSIDE THEIR AIRSPACE, THEY WERE NOT VERY BUSY, AND THEY HAD RADAR.

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.