TRIPLE RWY INCURSIONS BY A PLT OF A PA23-T250 WHEN TURNING THE WRONG WAY ON THE CLRING RWY AT BOS; MA.

Narrative

AFTER LNDG AT BOS AND EXITING RWY 4L IN A PIPER AZTEC (PA23-T250); I TURNED L ON RWY 33L AND PROCEEDED TO THE END; CONTRARY THE GND CTLR'S CLRNC TO TURN R ON RWY 33L AND PROCEED THE END AND TURN L ON TXWY L TO THE RAMP. IN THE PROCESS; I CROSSED RWYS 4L; 4R AND 9; ALL WHICH WERE ACTIVE RWYS. WHILE PREPARING FOR THE APCH AND LNDG TO BOS; I REVIEWED THE ARPT DIAGRAM TO DETERMINE THE LIKELY LNDG RWY AND FBO LOCATION. THE DOCUMENT WAS SIZED FOR KNEEBOARD AND THE WORDS GA WERE NOT READABLE IN THE LOW LIGHTING. THE FBO PRINTOUT FROM THE INTERNET INDICATED THAT IT WAS ON THE S SIDE OF THE FIELD. IN FACT IT WAS ON THE N SIDE OF THE FIELD. UPON LNDG AND TURNING OFF OF RWY 4L AT RWY 15L AS PER THE TWR; THE GND CTLR; CLRED ME TO TURN R ON RWY 33L TO THE END AND L ON TXWY L TO THE RAMP. THE CLRNC WAS READ BACK AND BEING UNFAMILIAR WITH THE FIELD AT NIGHT AND HAVING SET IN MY MIND THAT THE FBO WOULD BE S DEMANDING A L TURN; I MISTAKENLY TURNED L ON RWY 33L AND PROCEED TO THE END; WITH THE TAXI LIGHT; STROBES AND NAV LIGHTS ON. ALTHOUGH I BEGAN TO QUESTION THE UNDERSTOOD CLRNC; I DID NOT STOP AND ASK FOR CLARIFICATION. THE GND FREQ WAS VERY CONGESTED AND I DIDN'T WANT TO BE A BURDEN TO ATC. NOT FINDING TXWY L AT THE END; I CALLED THE GND CTLR AND HE IDENTED THE DEV. I WAS CLRED OFF OF RWY 33L AT THE S END AND THEN HANDED TO THE TWR FOR CLRNC BACK ACROSS THE ACTIVE RWYS TO THE FBO AND ASKED TO CALL THE TWR SUPVR. THIS COULD HAVE BEEN PREVENTED IF I HAD ASKED FOR PROGRESSIVE TAXI OR CALLED THE CLRNC INTO QUESTION WITH THE GND CTLR. MY RELUCTANCE TO DO SO CAN ONLY BE ATTRIBUTED TO MY DESIRE TO WORK SMOOTHLY WITH THE CTLR AND A FALSE CONFIDENCE THAT THE FBO WAS IN THE MISTAKEN DIRECTION OF TAXI. WAYS TO PREVENT THIS IN THE FUTURE ARE: ALWAYS STOP AND ASK WHEN IN DOUBT -- ASK FOR PROGRESSIVE TAXI NO MATTER HOW BUSY THE CTLR MIGHT BE. DON'T MOVE UNLESS I KNOW EXACTLY WHERE I AM AND EXACTLY WHERE I AM GOING. HAVE A SECONDARY PLT TO HELP WHEN GOING INTO LARGE UNFAMILIAR FIELDS. HAVE THE GND CTLR MONITOR THE FIRST TURN OF A TAXIING ACFT WHEN VISUAL OR RADAR SURVEILLANCE IS AVAILABLE.