ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,811, issued on Aug. 25, was assigned to Airbus Operations SAS (Toulouse, France).

"Method for detecting malfunctioning of a fuel return valve in an aircraft" was invented by Manon Brouqui (Toulouse, France), Matthieu Bradier (Toulouse, France) and Eric Benhamou (Toulouse, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "In an aircraft, a fuel return valve (FRV) controls a flow of fuel, used to cool an oil feeding a propulsion engine and an oil of an integrated drive generator (IDG). A first sensor supplies measurements of the oil temperature at an output port of the IDG and a second sensor supplies measurements of oil temperature of the propuls...