GEAR PROB. CONTINUED FLT WITH PAX.

Narrative

I WAS A SINGLE PLT; ON DEMAND CHARTER; TO RBG; DEPARTED PDX. CHKED WX AND ACFT DISPATCH BOOK AND SAW NO WRITE-UPS ON THE ACFT. THE FIRST LEG WAS A FERRY TO PICKUP 6 PAX AT RBG. ON FINAL AT RBG; THE LNDG GEAR EXTENDED PART WAY AND THEN POPPED THE LNDG GEAR CIRCUIT BREAKER. I PUT THE GEAR HANDLE IN THE GEAR UP POS AND RESET THE CIRCUIT BREAKER. THE GEAR RETRACTED AND I PUT THE GEAR HANDLE BACK DOWN. THE LNDG GEAR FAILED TO EXTEND; SO I PUT THE GEAR DOWN USING THE CHKLIST AND THE MANUAL GEAR EXTENSION HANDLE AND GOT THE GREEN LIGHTS. ON SHORT FINAL; RESET THE LNDG GEAR CIRCUIT BREAKER AND EVERYTHING APPEARED NORMAL. A NORMAL LNDG WAS PERFORMED. WHEN ON THE GND AND THOUGHT ABOUT WHAT HAD HAPPENED; I MAY HAVE EXTENDED THE GEAR AT TOO HIGH AN AIRSPD. ABOUT THAT TIME THE PAX SHOWED UP AND STATED THEY HAD A DEP TIME AT PDX. ASSUMING I HAD EXPERIENCED AN ANOMALY IN THE GEAR EXTENSION; LOADED THE PAX AND DEPARTED FOR PDX. ON ARR AT PDX; THE GEAR EXTENDED NORMALLY AND CONFIRMED MY EARLIER SUSPICION ABOUT THE ANOMALY. WHEN DISCUSSING THIS PROB WITH MAINT AND WRITING UP WHAT HAD HAPPENED; I FOUND OUT THAT THE ACFT HAD A RECENT HISTORY OF LNDG GEAR EXTENSION PROBS; BUT THERE WAS NO RECORD OF THIS IN THE DISPATCH BOOK. THE DISPATCH BOOK FOR ANY ACFT THAT IS FLOWN BY MANY OTHER PLTS SHOULD HAVE THE MAINT WRITE-UPS LEFT IN THE BOOK FOR A PERIOD OF AT LEAST 3 MONTHS TO LET OTHER PLTS KNOW WHAT PROBS THE ACFT HAD IN THE PAST. ALSO; I SHOULDN'T HAVE LET THE PAX DEP TIME PRESSURE ME INTO A HASTY DEP. THINK BEFORE YOU LEAP.