C185 PLT ATTEMPTS TKOF IN WRONG DIRECTION AT MSY.

Narrative

I APCHED THE ARPT FROM THE S. THE WIND WAS 010 DEGS AT 7 KTS. AS I NEARED THE ARPT; THE CTLR OFFERED RWY 6. THE WIND WAS NOW 030 DEGS AT 11 KTS. I LANDED ON RWY 6. I TAXIED TO THE RAMP. THE RAMP ATTENDANT PARKED ME NEXT TO THE TXWY FACING AWAY FROM THE TXWY. AFTER DISCHARGING MY PAX; I GOT BACK INTO THE ACFT AND STARTED UP. I RADIOED CLRNC AND SWITCHED TO GND CTL. AS I LOOKED UP; I SAW THE RAMP ATTENDANT SIGNALING ME TO TAXI OUT. I STARTED TO TAXI UP AND MADE THE 180 DEG TURN TO GET ONTO THE TXWY. AS I TURNED; I SAW ANOTHER ACFT TAXIING IN. APPARENTLY THE RAMP ATTENDANT WAS MARSHALLING THE OTHER ACFT. HOWEVER; HE WAS IN FRONT OF ME AS I WAS NEXT TO TXWY FACING AWAY FROM IT. I TAXIED OUT OF THE WAY AND AFTER THE OTHER ACFT PASSED I PROCEEDED TO THE RWY AT TXWY C. MY MIND WAS PREOCCUPIED BY WHAT JUST HAPPENED. I NOTICED A LEARJET ROLLING OUT ON RWY 10. THE TWR CTLR CLRED ME TO TAKE OFF ON RWY 28 WITH R TURN OUT. BEFORE I COULD ACKNOWLEDGE; ANOTHER ACFT (A MIL ACFT) TRIED TO CALL TWR. I THEN ACKNOWLEDGED AND PROCEEDED TO TAKE OFF DOWN RWY 10. MY MIND WAS ORIENTED THIS WAY BECAUSE I HAD JUST LANDED AND THE WIND WAS FROM THE NE. I FLY INTO THIS ARPT OFTEN AND NORMAL PROCS TO TAKE OFF WOULD BE TO TAKE OFF ON RWY 10 AND TURN R ON COURSE OR TAKE OFF ON RWY 28 AND TURN SE. THE TWR CTLR NOTICED I WAS GOING THE WRONG WAY. HE CANCELED MY TKOF CLRNC. I TURNED AROUND AND TOOK OFF IN THE PROPER DIRECTION WHEN HE REISSUED CLRNC TO TAKE OFF ON RWY 28. BY THIS TIME I WAS REALLY CONFUSED AND PROCEEDED TO TURN L ON COURSE AS IS NORMAL PROC. THE CTLR COMMENTED THAT WE WERE NOT COMMUNICATING TOO WELL AND POINTED OUT MY MISTAKE. MEANWHILE; WHILE ALL THIS WAS HAPPENING; THE MIL PLT KEPT TRYING TO CALL THE TWR NOT WAITING TO BE ACKNOWLEDGED. WE THEN STRAIGHTENED OUT THE INSTRUCTIONS AND I PROCEEDED TO MY DEST. BEFORE HANDING ME OFF; THE CTLR TOLD ME TO CALL THE TWR WHEN I LANDED. I DID AND WE DISCUSSED THE PROB. THE CHAIN OF EVENTS STARTED WHEN I WAS ON THE RAMP. I WAS CONFUSED BY THE TAXI INSTRUCTIONS OF THE RAMP ATTENDANT. THIS LED TO THE CONFUSION WITH THE TWR. ADDING TO THE PROB WAS THAT THE TWR CHANGED RWYS WHILE I WAS ON THE RAMP. THE CONFUSION WAS TOTALLY MY FAULT; HOWEVER; THE TWR CTLR COULD HAVE MENTIONED THAT THERE WAS A RWY CHANGE IN THE 10 MINS I WAS ON THE GND INSTEAD OF DRY INSTRUCTIONS. HE KNEW I JUST LANDED. IT ALSO DIDN'T HELP THAT THE LEARJET WAS TAXIING DOWN RWY 10. THE SOLUTION TO ALL THIS IS TO JUST SLOW DOWN BIT AND TRIPLECHK EVERY SIT AND TO NOT RELY ON HABIT PATTERNS AND ASSUME REGULAR PROCS.