Authorities say a plane set to fly from West Palm Beach to Philadelphia with 138 people aboard had to be evacuated after a report of a possible hydraulic fuel leak.

Palm Beach International Airport spokeswoman Casandra Davis says the American Airlines plane was set to head out to the runway Thursday afternoon when crewmembers called in a possible leak.

American Airlines spokeswoman Alexis Aran Coello says the 133 passengers and five crewmembers were evacuated to the tarmac using inflatable slides. She says 23 passengers and one crewmember were taken to local hospitals for treatment. The other passengers were returned to the terminal, where the airline was helping them make new travel arrangements.

Palm Beach County Fire Rescue officials went to the scene.