BE02 ACFT ON VFR FLT PLAN. CTR CTLR TERMINATED VFR ADVISORIES AND DIDN'T PROVIDE FREQ FOR APCH CTLR. FLC WAS UNPREPARED FOR LACK OF ATC AID AND ENTERED CLASS B AIRSPACE BEFORE ESTABLISHING COM.

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WE WERE ENRTE LGA TO IAD; WHEN ZNY ATTEMPTED A HDOF TO BWI APCH; AND WAS UNABLE. ZNY TERMINATED VFR ADVISORIES; TOLD US TO SQUAWK 1200; WITHOUT OFFERING A FREQ. WHEN WE REQUESTED A FREQ TO CONTACT BWI APCH; HE IGNORED US. WE ASKED AGAIN; AND HE AGAIN IGNORED US. MY GUESS IS HE WAS TRYING TO DO A FAVOR FOR BWI APCH BY NOT GIVING US THE FREQ TO 'HASSLE' THEM. (AS IT TURNS OUT; WE LATER SPOKE TO BWI APCH; AND BWI WAS EXPECTING US; THEY THOUGHT WE HAD CHOSEN NOT TO TALK TO THEM!) AS WE WERE UNPREPARED; AND UNFAMILIAR WITH THE APCH FREQS; WE LEVELED OFF AT 10000 FT TO STAY OUTSIDE OF CLASS B; WHILE WE LOOKED FOR A GOOD FREQ. AS WE APCHED THE AML VOR LOCATED ON IAD ARPT; WITHIN 26 MI WE BEGAN OUR DSCNT OUT OF 10000 FT; USING OUR BEST GUESS ESTIMATE THAT WE WERE CLR OF CLASS B AIRSPACE. THROUGH 7000 FT WE FINALLY GOT TO THE CORRECT APCH CTLR FOR IAD; AND FROM THERE PROCEEDED WITHOUT INCIDENT. AFTER WE LANDED; WE WERE TOLD TO CALL BWI APCH. IN OUR PHONE CONVERSATION; THE APCH SUPVR WAS VERY NICE; EXPLAINED WE HAD ENTERED CLASS B; AND WANTED TO KNOW WHAT HAD HAPPENED.