Learjet 55, Fort Lauderdale, Fla., July 19, 2004–Learjet N55LF overran Runway 31 during its landing roll at the Fort Lauderdale Executive Airport, in VMC. Neither the ATP pilot nor the commercial copilot was injured, but the airplane was substantially damaged. Repositioning the aircraft from Fort Lauderdale International, the crew was expecting to land on Runway 13, but it was closed and the tower told them to land on Runway 31. The airplane touched down about 1,500 feet from the threshold in extremely heavy rain. The pilot deployed reverse thrust and applied brakes. He felt the airplane was not slowing and, believing the airplane’s tires to be hydroplaning, elected to go around, but the airplane did not accelerate. The airplane traveled past the end of the runway, the gear sheared off and the fuselage slid on its belly, knocking down a chain-link fence. The fuselage came to stop in a nose-high attitude on a sand embankment. The engine thrust reverser doors were found in the open position and the wing flaps were in the eight-degree position.