Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Hazardous Material Violation; Deviation / Discrepancy - Procedural Published Material / Policy
General Flight Cancelled / Delayed; General Maintenance Action
Aircraft
While refueling Aircraft X the aircraft fueler [at ZZZ] noticed fuel venting out of the outboard right wing vent. He immediately stopped fueling and quickly began to contain what he estimated to be 3-5 gallons of fuel located beneath the wing tip. I; PIC; asked the fueler to stop any further fueling; ensured the fuel was being contained by FBO staff; contacted the Assistant Chief Pilot on duty; wrote a report and notified Maintenance as directed by guidance written in the FOM. The aircraft was immediately grounded as 'Aircraft on Ground'. This write up was a repeat [on date] where no defects were noted and the aircraft was released for flight. We had to contact Maintenance to determine what was previously accomplished on [date] with the same mechanical issue as there was no data on the company log book. After the fact. Had we known that nothing was found or repaired previously; then we would have been more vigilant while trying to top off the wings for further fuel spills specific with this aircraft.
[Report narrative contained no additional information.]
Bombardier Challenger flight crew reported fuel spill during refueling.