Narrative:

I was at oak international airport. I obtained a VFR standard departure, which included destination, cruising altitude, and flight advisories. I was also assigned a transponder code. I then contacted the tower, and was cleared to takeoff on runway 27R, then turn right to a heading of 310 degrees. Oak tower then had me turn to a heading of 080 degrees and told me to contact bay approach. I was climbing through 2800 ft when I called bay approach and told them that I was climbing through 2800 ft for 9500 ft. I was under the assumption that I was cleared through the class B airspace by oak tower, who in conjunction, I thought, was in contact with bay approach when I was handed off. I was climbing through 3200 ft when the bay approach controller acknowledged me. I was told to turn immediately to a heading of 060 degrees and to descend to 3000 ft, and that I had just violated the class B airspace. I know that the class B airspace in that sector has a ceiling of 3000 ft, but again, I thought that I had been cleared and idented by oak tower and bay approach. On the initial handoff, I feel that the oak tower controller should have advised me to stay clear of the class B airspace, and to stay at or below 3000 ft, then check in with bay approach after oak tower handed me off. I know now not to assume that I have been cleared through a class B airspace, even though I am in contact with air traffic control until I hear that I have been cleared through class B airspace.

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Original NASA ASRS Text

Title: PVT PLT PENETRATED CLASS B AIRSPACE DURING DEP CLB NOT REALIZING THAT HE DID NOT HAVE CLRNC TO ENTER THAT AIRSPACE AS HE BELIEVED THAT THE TWR HAD HANDED HIM OFF TO DEP CTL.

Narrative: I WAS AT OAK INTL ARPT. I OBTAINED A VFR STANDARD DEP, WHICH INCLUDED DEST, CRUISING ALT, AND FLT ADVISORIES. I WAS ALSO ASSIGNED A XPONDER CODE. I THEN CONTACTED THE TWR, AND WAS CLRED TO TKOF ON RWY 27R, THEN TURN R TO A HDG OF 310 DEGS. OAK TWR THEN HAD ME TURN TO A HDG OF 080 DEGS AND TOLD ME TO CONTACT BAY APCH. I WAS CLBING THROUGH 2800 FT WHEN I CALLED BAY APCH AND TOLD THEM THAT I WAS CLBING THROUGH 2800 FT FOR 9500 FT. I WAS UNDER THE ASSUMPTION THAT I WAS CLRED THROUGH THE CLASS B AIRSPACE BY OAK TWR, WHO IN CONJUNCTION, I THOUGHT, WAS IN CONTACT WITH BAY APCH WHEN I WAS HANDED OFF. I WAS CLBING THROUGH 3200 FT WHEN THE BAY APCH CTLR ACKNOWLEDGED ME. I WAS TOLD TO TURN IMMEDIATELY TO A HDG OF 060 DEGS AND TO DSND TO 3000 FT, AND THAT I HAD JUST VIOLATED THE CLASS B AIRSPACE. I KNOW THAT THE CLASS B AIRSPACE IN THAT SECTOR HAS A CEILING OF 3000 FT, BUT AGAIN, I THOUGHT THAT I HAD BEEN CLRED AND IDENTED BY OAK TWR AND BAY APCH. ON THE INITIAL HDOF, I FEEL THAT THE OAK TWR CTLR SHOULD HAVE ADVISED ME TO STAY CLR OF THE CLASS B AIRSPACE, AND TO STAY AT OR BELOW 3000 FT, THEN CHK IN WITH BAY APCH AFTER OAK TWR HANDED ME OFF. I KNOW NOW NOT TO ASSUME THAT I HAVE BEEN CLRED THROUGH A CLASS B AIRSPACE, EVEN THOUGH I AM IN CONTACT WITH AIR TFC CTL UNTIL I HEAR THAT I HAVE BEEN CLRED THROUGH CLASS B AIRSPACE.

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.