Narrative:

I was flying from long beach to brown field via the san diego class B VFR corridor. I was on socal approach with flight following from departure at long beach up until just entering the san diego special flight rules area. The socal approach controller told me that radar service was terminated, to squawk VFR and he gave me the pilot's information exchange frequency of 126.05. I did as instructed and entered the san diego corridor at 3500 ft, stating my position throughout the corridor. I had my san diego terminal chart with me that I studied before the flight. I tried to be sure to maintain a position east of the san diego lindbergh field along the VFR corridor while constantly looking for traffic. I saw no traffic in the vicinity and continued on. Everything looked clear. After landing at brown field, san diego, the tower advised me to contact a supervisor at TRACON in regards to a pilot deviation. I called the supervisor to find out what happened and he told me that I happened to be in class B airspace and a plane was on the final leg for runway 27 and that the other plane was at a vertical distance of 200 ft from me. He couldn't determine to me whether the other plane was above or below me. I saw no traffic in the vicinity of the airport and I was assured that I was flying along the VFR corridor. I was very surprised that this incident occurred. I'll be extra careful anytime I fly through a class B VFR corridor in the future.

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Original NASA ASRS Text

Title: PLT OF A C152 FLYING IN THE VFR CORRIDOR OF CLASS B AIRSPACE IS TOLD OF AN NMAC WITH AN ACFT ON FINAL APCH TO SAN.

Narrative: I WAS FLYING FROM LONG BEACH TO BROWN FIELD VIA THE SAN DIEGO CLASS B VFR CORRIDOR. I WAS ON SOCAL APCH WITH FLT FOLLOWING FROM DEP AT LONG BEACH UP UNTIL JUST ENTERING THE SAN DIEGO SPECIAL FLT RULES AREA. THE SOCAL APCH CTLR TOLD ME THAT RADAR SVC WAS TERMINATED, TO SQUAWK VFR AND HE GAVE ME THE PLT'S INFO EXCHANGE FREQ OF 126.05. I DID AS INSTRUCTED AND ENTERED THE SAN DIEGO CORRIDOR AT 3500 FT, STATING MY POS THROUGHOUT THE CORRIDOR. I HAD MY SAN DIEGO TERMINAL CHART WITH ME THAT I STUDIED BEFORE THE FLT. I TRIED TO BE SURE TO MAINTAIN A POS E OF THE SAN DIEGO LINDBERGH FIELD ALONG THE VFR CORRIDOR WHILE CONSTANTLY LOOKING FOR TFC. I SAW NO TFC IN THE VICINITY AND CONTINUED ON. EVERYTHING LOOKED CLR. AFTER LNDG AT BROWN FIELD, SAN DIEGO, THE TWR ADVISED ME TO CONTACT A SUPVR AT TRACON IN REGARDS TO A PLTDEV. I CALLED THE SUPVR TO FIND OUT WHAT HAPPENED AND HE TOLD ME THAT I HAPPENED TO BE IN CLASS B AIRSPACE AND A PLANE WAS ON THE FINAL LEG FOR RWY 27 AND THAT THE OTHER PLANE WAS AT A VERT DISTANCE OF 200 FT FROM ME. HE COULDN'T DETERMINE TO ME WHETHER THE OTHER PLANE WAS ABOVE OR BELOW ME. I SAW NO TFC IN THE VICINITY OF THE ARPT AND I WAS ASSURED THAT I WAS FLYING ALONG THE VFR CORRIDOR. I WAS VERY SURPRISED THAT THIS INCIDENT OCCURRED. I'LL BE EXTRA CAREFUL ANYTIME I FLY THROUGH A CLASS B VFR CORRIDOR IN THE FUTURE.

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.