COMMUTER DEPARTS WITHOUT BEING REFUELED.

Narrative

I WAS ACTING AS FO ON FLT FROM YHZ TO JFK. THE CREW ARRIVED AT THE ARPT PRIOR TO THE 45 MIN CHK IN TIME REQUIRED BY THE COMPANY. THE ACFT ARRIVED AT THE GATE ABOUT 15 MINS PRIOR TO DEP. I PREFLTED THE ACFT AND CLBED INTO THE R SEAT AND BEGAN MY PREFLT OF THE COCKPIT. THE CAPT WAS ALREADY IN HIS SEAT LOOKING OVER THE RELEASE AND LOGBOOKS. I BEGAN TO GET THE CLRNC AND STARTED FILLING OUT THE MANIFEST. THE CAPT CALLED FOR THE BEFORE STARING ENGS CHKLIST WHICH WE BEGAN TO RUN SO AS TO PREPARE FOR ENG START. DURING THE CHKLIST OR JUST PRIOR TO THE CHKLIST WE TURNED ON THE GND PWR AND THE VOLTAGE DROPPED TO 25 VOLTS ON THE VOLTMETER. ALL THE LIGHTS DIMMED AND WENT OUT. THE CAPT TURNED OFF GND PWR AND BATTERIES AND THEN REPOWERED THE ACFT. AFTER REPOWERING THE ACFT EVERYTHING APPEARED NORMAL AND WE COMPLETED THE CHKLIST. ONCE AIRBORNE WE WERE INFORMED THAT THE ACFT WAS NEVER FUELED PRIOR TO DEP. RELEASE FUEL WAS 4200 LBS AND WE ACTUALLY DEPARTED WITH 3200 LBS. WE CALCULATED THAT WE COULD HAVE MADE IT TO JKF WITH 650 LBS TO SPARE AT THE PRESENT FUEL BURN. AFTER FLYING FOR A WHILE LONGER BOTH THE CAPT AND MYSELF DECIDED TO MAKE AN OFF SCHEDULED LNDG AT PVD TO TAKE ON ADDITIONAL FUEL. I FEEL THE CONTRIBUTING FACTORS TO THIS ACCIDENT WERE THE INTERRUPTED CHKLIST AND THE RUSH OF TRYING TO GET THE FLT OUT ON TIME.