Water salutes have been used to mark the retirement of a senior pilot or air traffic controller, the first or last flight of an airline to an airport, the first or last flight of a specific type of aircraft, as a token of respect for the remains of soldiers killed in action, or other notable events.

Pilots (and their aircraft) are sprayed with water in a ceremonial ritual known as a "Water Salute." This tradition typically involves two fire engines parked on opposite sides of a taxiway using their water cannons to create a magnificent arch over the airplane. This is done to honor a senior pilot on their final flight before retirement, or to celebrate a milestone like the arrival of a new aircraft type or a new airline route. The tradition is believed to have originated from the maritime industry, where fireboats would spray arches of water to welcome new ships or celebrate successful voyages. It is a gesture of high respect and celebration within the aviation community.