Narrative:

I departed sql for a right downwind departure I cleared the san carlos traffic area and proceeded to climb to 2000' AGL. At this time I requested a frequency change, which was approved, and contacted bay departure 135.65 for flight following to bakersfield. I was given a transponder code and advised that I was slightly northwest of pao and to remain clear of the sfo TCA. I had been utilizing a DME tuned to the sfo VOR 111.6 to determine the TCA boundaries as well as identing ground references. I continued my climb to, but remained below, 2500' until the DME indicated 15 NM from sfo. I also believe that I had crossed pao--the landmark for the TCA division of areas charlie and delta. At this point I continued my climb to 3800' attempting to remain below the 4000' floor of TCA region delta. During this climb from 2500' to 3800' I copied portions of a transmission between ATC (bay departure) and an medium large transport jet. The jet was being advised of traffic ahead. I did not copy the identify of this traffic. Bay departure did not advise me that I was the traffic, nor did the ATC warm me of the oncoming medium large transport jet. Several mins later the jet was visualized at 12 O'clock. Approximately 300' above me. Shortly thereafter I was given a phone # to call at oak tower after landing. Upon contacting the tower I was told that the incident had occurred within area charlie rather than delta and that I had entered the TCA. My concerns are: I was never advised of the TCA penetration though the ATC had ample time to warn me of this condition if this was the case. I was not advised of the oncoming jet traffic though I was on flight following--an evasive descent would have been quite easy to accomplish. To the best of my knowledge I remained below TCA level charlie until passing pao and reaching 15 NM from sfo VOR based on the DME readings, then proceeded to climb to 3800' where the near midair collision occurred. Thank you for reviewing this incident.

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Original NASA ASRS Text

Title: GA-SMA INADVERTENTLY CLIMBED INTO TCA AND CONFLICTED WITH AN ACR-MLG.

Narrative: I DEPARTED SQL FOR A RIGHT DOWNWIND DEP I CLRED THE SAN CARLOS TFC AREA AND PROCEEDED TO CLB TO 2000' AGL. AT THIS TIME I REQUESTED A FREQ CHANGE, WHICH WAS APPROVED, AND CONTACTED BAY DEP 135.65 FOR FLT FOLLOWING TO BAKERSFIELD. I WAS GIVEN A XPONDER CODE AND ADVISED THAT I WAS SLIGHTLY NW OF PAO AND TO REMAIN CLR OF THE SFO TCA. I HAD BEEN UTILIZING A DME TUNED TO THE SFO VOR 111.6 TO DETERMINE THE TCA BOUNDARIES AS WELL AS IDENTING GND REFERENCES. I CONTINUED MY CLB TO, BUT REMAINED BELOW, 2500' UNTIL THE DME INDICATED 15 NM FROM SFO. I ALSO BELIEVE THAT I HAD CROSSED PAO--THE LANDMARK FOR THE TCA DIVISION OF AREAS CHARLIE AND DELTA. AT THIS POINT I CONTINUED MY CLB TO 3800' ATTEMPTING TO REMAIN BELOW THE 4000' FLOOR OF TCA REGION DELTA. DURING THIS CLB FROM 2500' TO 3800' I COPIED PORTIONS OF A XMISSION BTWN ATC (BAY DEP) AND AN MLG JET. THE JET WAS BEING ADVISED OF TFC AHEAD. I DID NOT COPY THE IDENT OF THIS TFC. BAY DEP DID NOT ADVISE ME THAT I WAS THE TFC, NOR DID THE ATC WARM ME OF THE ONCOMING MLG JET. SEVERAL MINS LATER THE JET WAS VISUALIZED AT 12 O'CLOCK. APPROX 300' ABOVE ME. SHORTLY THEREAFTER I WAS GIVEN A PHONE # TO CALL AT OAK TWR AFTER LNDG. UPON CONTACTING THE TWR I WAS TOLD THAT THE INCIDENT HAD OCCURRED WITHIN AREA CHARLIE RATHER THAN DELTA AND THAT I HAD ENTERED THE TCA. MY CONCERNS ARE: I WAS NEVER ADVISED OF THE TCA PENETRATION THOUGH THE ATC HAD AMPLE TIME TO WARN ME OF THIS CONDITION IF THIS WAS THE CASE. I WAS NOT ADVISED OF THE ONCOMING JET TFC THOUGH I WAS ON FLT FOLLOWING--AN EVASIVE DSCNT WOULD HAVE BEEN QUITE EASY TO ACCOMPLISH. TO THE BEST OF MY KNOWLEDGE I REMAINED BELOW TCA LEVEL CHARLIE UNTIL PASSING PAO AND REACHING 15 NM FROM SFO VOR BASED ON THE DME READINGS, THEN PROCEEDED TO CLB TO 3800' WHERE THE NMAC OCCURRED. THANK YOU FOR REVIEWING THIS INCIDENT.

Data retrieved from NASA's ASRS site as of August 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.