Commercial Fixed Wing
Troubleshooting
Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor; Ground Event / Encounter Other / Unknown
General Maintenance Action
Airport
I went to check the cabin temperature for the flight. When I arrived at the gate I noticed pc unit was switched off; and mechanic was walking down the jet bridge. I asked him if [he] switched it off. He said it was cold on board so he switched it off and will call back if it needs to be [turned] back on. While I was inside aircraft checking aircraft cabin temps mechanic told me he smells fuel; I came down the jet bridge and I noticed wet around the pc air unit. So I checked if it's a fuel spill.  Fuel was still dripping out of the unit nonstop; fuel was spilled from the Jet bridge where pc unit was staged to all the way down to taxi lane. I notified my supervisor; he respond quickly and showed up to the gate; he asked me to bring fuel spill cart and we start cleaning the fuel and secured the spilled area.
Ground personnel reported a fuel leak/spill from pc unit on jet bridge.