PA28 PLT IS CONCERNED ABOUT ENTERING CLASS D AIRSPACE DURING RADAR VECTORS FROM PBI TRACON.

Narrative

WHILE ON A VFR TRAINING FLT WE WERE PRACTICING INST APCHS TO AN UNCTLED ARPT. WE HAD REQUESTED VFR APCHS THROUGH THE CTLING ATC AGENCY; HAD RECEIVED A SQUAWK CODE; AND WERE RECEIVING RADAR VECTORS FOR THE APCH. WHILE ON VECTORS WE PENETRATED AN ADJACENT CLASS D AIRSPACE FOR A PVT ARPT. I WAS NOT SURE WHETHER OR NOT THIS AIRSPACE WAS ACTIVE AT THE TIME SINCE THE SECTIONAL CHART STATES THIS AIRSPACE IS CLASS D OR E BY NOTAMS; AND I DID NOT SEE ANY NOTAMS FOR THIS AREA BEFORE TKOF. BECAUSE THIS WAS A VFR FLT I WAS UNSURE IF WE NEEDED TO REMAIN CLR OF THE AIRSPACE SINCE WE HAD RECEIVED A SQUAWK CODE AND WE WERE RECEIVING RADAR VECTORS FOR AN APCH FROM THE APCH CTLR. I DID NOT REALIZE THE PROB UNTIL WE WERE IN THE CLASS D AIRSPACE. I BECAME COMPLACENT DUE TO THE FACT THAT WE DID HAVE A SQUAWK CODE AND WE WERE RECEIVING VECTORS. ONE WAY TO AVOID THE PROB WOULD BE TO HAVE BETTER SITUATIONAL AWARENESS WITH REGARD TO THE VFR SECTIONAL. ANOTHER WAY TO AVOID THE PROB WOULD BE TO ASK THE CTLR; WE WERE RECEIVING VECTORS FROM; IF WE NEEDED TO TAKE ANY CORRECTIVE ACTIONS TO AVOID THE AIRSPACE.