Aircraft engine oil filler apparatus

An oil tank of an aircraft engine, comprising:

• a filler tube received through a wall of the oil tank such that an upper end of the filler tube is accessible from outside of the oil tank and a bottom end of the filler tube is disposed inside the oil tank, the filler tube defining apertures in the bottom end;
• a valve received at least in part in the bottom end of the filler tube, the valve being operable between an open position in which the valve hydraulically connects a portion of the filler tube above the apertures to the inside of the oil tank via the apertures, and a closed position in which the valve blocks the apertures and thereby hydraulically disconnects the portion of the filler tube above the apertures from the inside of the oil tank;
• and
• a float disposed inside the oil tank above the valve and operatively connected to the valve to move the valve from the open position to the closed position when oil inside the oil tank rises to a predetermined level.

A method of operation of an oil filler apparatus, comprising:

• receiving oil into a filler tube of the oil filler apparatus inserted at least in part into an oil tank of an aircraft,
• defining a fluid connection between a bottom end of the filler tube and the oil tank for oil to flow through the filler tube to the oil tank;
• maintaining oil in the filler tube when the oil in the oil tank is above the bottom end of the filler tube;
• and
• fluidly disconnecting the bottom end of the filler tube from the oil tank when the oil in the oil tank reaches a threshold that is above the bottom end of the filler tube, wherein fluidly disconnecting the bottom end of the filler tube from the oil tank includes seating a closure member against the filler tube, wherein seating the closure member includes telescoping a piston relative to the filler tube.