GA PLT DEPARTS BOS AFTER GND ENCOUNTER WITH TXWY LIGHT.

Narrative

DURING PROGRESSIVE TAXIING ON TXWY A TO N CARGO AREA AT BOS ARPT; I WAS INSTRUCTED BY THE GND CTL TO TURN L ABOUT 30 DEGS. THE AREA WHERE I MADE THAT TURN WAS POORLY LIT; AND I LOST THE YELLOW TAXI LINE. ABOUT 50 YARDS AHEAD OF ME; I SAW A LINE OF BLUE TAXI LIGHTS. AS I WAS TURNING AWAY FROM THESE LIGHTS; I HEARD A WEAK THUMP FROM THE R SIDE OF THE AIRPLANE. UPON ARRIVING AT THE N CARGO AREA; I INSPECTED THE AIRPLANE UNDER POOR LIGHTING CONDITIONS. I NOTICED WHAT LOOKED TO ME AT THE TIME AS A MINOR DAMAGE TO THE LEADING EDGE OF 1 BLADE OF THE R PROP. I RAN THE R ENG AT VARIOUS ENG SPD FROM IDLE TO TKOF PWR AND FOUND THERE WERE NO VIBRATIONS OR ANY OTHER ABNORMALITIES. BASED ON THE VISUAL INSPECTION AND THE RUNUP; I CONCLUDED THAT IT WAS SAFE TO CONTINUE THE FLT. UPON ARRIVING AT HOME BASE; I NOTIFIED THE DIRECTOR OF MAINT ABOUT THE INCIDENT. HE TOLD ME THAT THE DAMAGE IS NOT REPAIRABLE. HAD I KNOWN THE EXTENT OF THE DAMAGE ON THE SITE; I WOULD HAVE NOT CONTINUED THE FLT. IT IS MY ASSUMPTION THAT SEVERAL TAXI LIGHTS WERE NOT OPERATIVE AND THAT I MUST HAVE HIT ONE OF THEM.