A fuel truck rolled over at the general aviation section at Key West International Airport on Tuesday, Cammy Clark, spokeswoman for Monroe County said.
The truck had a capacity of 7,000 gallons and was believed to of had 4,000 gallons onboard at the time of the incident, Clark said.
It's not known how much fuel leaked.
Monroe County Fire Rescue, which is stationed at the airport, sprayed foam and placed booms to contain the spill.
The driver of the truck appeared to have made a tight turn in the front of the hangar, which caused the rollover, Clark said.
The driver sustained minor injuries and was taken to Lower Keys Medical Center after the crash.
Commercial aviation was not affected by the incident.
The Florida Highway Patrol is investigating.