The NTSB has released its preliminary report on the May 17, 2021, crash of a Sikorsky UH-60 firefighting helicopter in Leesburg, Florida. The Sikorsky was using a newly installed system to fill a water tank from pickups at a small lake adjacent to the airport when on the seventh trip, things started to go terribly wrong.
The hose for the device that sucks water up from the surface, often referred to as a “snorkel,” started swinging wildly as the helicopter maneuvered and accelerated, something that employees of Firehawk Helicopters, the company that pioneered the use of Blackhawks for firefighting, noticed from the ground but about which the pilot was apparently unaware. One employee on the ground called the control tower to have a controller alert the pilot to the danger and tell him to slow down immediately. Another employee waved her arms in warning to the pilot.
But neither attempt to alert the pilot got there in time, and the hose hit the main rotor blades, causing them to break off, severing the tail rotor as they were shed. The helicopter then spun into the ground, exploding upon impact and killing all four aboard.