OPERATING AIRCRAFT PROPULSION SYSTEM DURING ENGINE-INOPERATIVE EVENT

A method for operating an aircraft (22) having a first propulsion unit (28A) and a second propulsion unit (28B). During this method a propulsion unit-inoperative event is identified where the first propulsion unit (28A) is inoperative and the second propulsion unit (28B) is operative. A trimmed parameter for the second propulsion unit (28B) is converted to an actual parameter for the second propulsion unit (28B). The actual parameter is monitored over a period of time the second propulsion unit (28B) operates during the propulsion unit-inoperative event. An action is performed in response to determining that the second propulsion unit (28B) has operated for at least a time threshold with the actual parameter being equal to or greater than a parameter threshold.