Patent ID: 8479486

Claim:
An oil pre-heating apparatus for an aircraft gas turbine, comprising: a suction line connectable to an oil tank of an aircraft gas turbine; a heat source connected to the suction line, positioned externally of the aircraft and operated independently of the aircraft; and a return line connected to the heat source and connectable to the oil tank; wherein the heat source is selectively connectable to the oil tank for pre-heating oil in the oil tank and selectively disconnectable from the oil tank to be separated from the aircraft when the oil in the oil tank has been pre-heated; wherein the suction line has an end portion for connection to the oil tank and the return line has an end portion for connection to the oil tank, and the end portions of the suction line and return line are positioned adjacent each other and connected together for simultaneous insertion into and removal from the oil tank through a single oil port of the oil tank.