Narrative:

Departed isla grande airport (tjig) VFR approved for the (VFR) tango transition by tjig tower to tist (st. Thomas). Was cleared for takeoff by tjig tower climb to 1;500 ft and fly the tango transition. I departed on 095 heading and waited for as always for tower to transfer me to san juan tower; but they never did. I called san juan tower and checked in on the tango transition proceeding as approved to the tower. I was informed by the controller that I had entered class C airspace without authorization. I apologized and stated that I was not handed over to tower as usual. The controller stated that I should have circumvented class C airspace. I have always understood that once I was cleared for the tango transition and given a discreet transponder code that my authorization was already granted. I still believe that is the case; nonetheless I will in the future assure myself that I call san juan tower before proceeding. There were no conflicts with other aircraft; I was switched to san juan departure and continued my VFR flight. I will be more vigilant in the future.

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Original NASA ASRS Text

Title: SMA pilot assumed he had Class C clearance; Controller advised pilot that they had violated the airspace.

Narrative: Departed Isla Grande airport (TJIG) VFR approved for the (VFR) Tango Transition by TJIG Tower to TIST (St. Thomas). Was cleared for takeoff by TJIG Tower climb to 1;500 FT and fly the Tango Transition. I departed on 095 heading and waited for as always for Tower to transfer me to San Juan Tower; but they never did. I called San Juan Tower and checked in on the Tango Transition proceeding as approved to the Tower. I was informed by the Controller that I had entered Class C airspace without authorization. I apologized and stated that I was not handed over to Tower as usual. The Controller stated that I should have circumvented Class C airspace. I have always understood that once I was cleared for the Tango Transition and given a discreet transponder code that my authorization was already granted. I still believe that is the case; nonetheless I will in the future assure myself that I call San Juan Tower before proceeding. There were no conflicts with other aircraft; I was switched to San Juan Departure and continued my VFR flight. I will be more vigilant in the future.

Data retrieved from NASA's ASRS site 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.