Patent ID: 8446284

Claim:
A method of indicating low oil level of lubrication oil for a gas turbine engine, comprising the steps of: clearing a LOW OIL LEVEL indication if the oil level of the lubrication oil is at a level greater than or equal to an OIL FILLED level if the gas turbine engine is in a WATCH state; setting the LOW OIL LEVEL indication if the temperature of the lubrication oil is greater than or equal to an OIL TEMP WARM temperature and the oil level of the lubrication oil is less than an ADD OIL STATIC level if the gas turbine engine is in the WATCH state and its previous state was a POWER UP state; setting the LOW OIL LEVEL indication if the temperature of the lubrication oil is less than the OIL TEMP WARM temperature and the oil level of the lubrication oil is less than a ADD OIL STATIC COLD level if the gas turbine engine is in the WATCH state and its previous state was the POWER UP state; setting the LOW OIL LEVEL indication if the temperature of the lubrication oil is greater than or equal to the OIL TEMP WARM temperature and the oil level of the lubrication oil is less than an ADD OIL RUNNING level if the gas turbine engine is in a RUN or COOLDOWN state; and setting the LOW OIL LEVEL indication if the temperature of the lubrication oil is less than the OIL TEMP WARM temperature and the oil level of the lubrication oil is less than an ADD OIL RUNNING COLD level if the gas turbine engine is in the RUN or COOLDOWN state.