Narrative:

I contracted ccr tower over the mothball fleet. Advised to enter straight-in for runway 19L. Listening to the tower frequency I heard ccr direct a cherokee somewhere nearby to the east also to runway 19L. I looked for the traffic and did not see any. Over malland reservoir (approximately 2 mi final), I contacted ccr tower to report my position. I heard the cherokee report a similar position for runway 19L straight-in. I looked up and left and saw a cherokee approximately 100 ft above and 100 ft left of me. I stayed right. I contacted ccr tower who cleared me for straight-in final runway 19R. Landing was uneventful. I think I (C170) and the cherokee were cleared by ccr tower for same approach (straight-in runway 19L) and were in close proximity. At least one of us should have been cleared for runway 19L or sequenced differently.

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Original NASA ASRS Text

Title: A C170 PLT RPTS AN NMAC WITH A PA28, BOTH VFR AND INBOUND TO CCR FROM THE SAME AREA.

Narrative: I CONTRACTED CCR TWR OVER THE MOTHBALL FLEET. ADVISED TO ENTER STRAIGHT-IN FOR RWY 19L. LISTENING TO THE TWR FREQ I HEARD CCR DIRECT A CHEROKEE SOMEWHERE NEARBY TO THE E ALSO TO RWY 19L. I LOOKED FOR THE TFC AND DID NOT SEE ANY. OVER MALLAND RESERVOIR (APPROX 2 MI FINAL), I CONTACTED CCR TWR TO RPT MY POS. I HEARD THE CHEROKEE RPT A SIMILAR POS FOR RWY 19L STRAIGHT-IN. I LOOKED UP AND L AND SAW A CHEROKEE APPROX 100 FT ABOVE AND 100 FT L OF ME. I STAYED R. I CONTACTED CCR TWR WHO CLRED ME FOR STRAIGHT-IN FINAL RWY 19R. LNDG WAS UNEVENTFUL. I THINK I (C170) AND THE CHEROKEE WERE CLRED BY CCR TWR FOR SAME APCH (STRAIGHT-IN RWY 19L) AND WERE IN CLOSE PROX. AT LEAST ONE OF US SHOULD HAVE BEEN CLRED FOR RWY 19L OR SEQUENCED DIFFERENTLY.

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.