Wet lease is a special lease between airlines  While it provides the aircraft, it provides the crew and the flight crew to serve each other, and in the process of leasing, the logo and the aircraft number of the leased aircraft remain unchanged
The regulatory system of civil aviation defines it as a lease in which a lessee leases an aircraft under a lease agreement in which it carries one or more members of the crew
Due to seasonal reasons, an airline has a shortage of personnel, so some of its staff are temporarily seconded from airline B to undertake the task of flying.