Before leaving an aircraft unattended, it will be the responsibility of the operator to place the aircraft in a hangar or tie-down place or make sure the parking brakes are set or wheels properly chocked. Suitable tie-downs of chain or rope will be provided by the aircraft owner for the safety of the aircraft tied down, and the aircraft tied down around it. In the event such owner does not use adequate chains or ropes to secure his aircraft, he becomes liable to the surrounding aircraft owners for damage done to their aircraft as a result of his aircraft breaking loose and causing damage. (Ord. 83-29 §18, 1983; Ord. A-565 §5.02, 1965).