The float system is packed where the helicopter lands
Emergency floats are folded into housings attached to a helicopter’s landing gear, often along its skids. Stowed, the buoyant bags add little to the aircraft’s outline; deployed, they expand into broad supports beneath it. That arrangement keeps the system compact during ordinary flight, when exposed floats would add aerodynamic drag and weight.
The floats are not designed to make a helicopter handle like a boat. Their job is to provide enough buoyancy to keep it from sinking immediately after a water landing, giving people time to get out and rescuers time to reach them.
From compact bundle to flotation
When the pilot activates the system, stored gas rapidly inflates the folded bags. The resulting air-filled floats push water aside, creating an upward force that helps support the helicopter’s weight. Their placement matters: flotation on both sides of the aircraft helps keep it more upright instead of letting it roll onto its side.
The system has to balance two competing needs. It must stay small and unobtrusive in flight, yet expand into enough flotation to support a heavy, complex aircraft on an unstable surface. Even then, waves, damage, and the circumstances of the landing can affect how well the helicopter stays afloat.
That transformation is the point: equipment that barely changes the helicopter’s shape in the air can become its temporary platform on the water.
