METHODS AND SYSTEMS FOR DETECTING AND RESPONDING TO AN ENGINE DISTURBANCE

Methods and systems for detecting and responding to an engine disturbance are described. The method comprises monitoring a rate of change of a combustor pressure of an engine (100), detecting an engine disturbance when the rate of change of the combustor pressure falls below an event detection threshold (302), initiating an engine recovery sequence in response to detecting the engine disturbance, confirming a surge event when the rate of change of the combustor pressure increases above a surge confirmation threshold (304) within a flameout confirmation time period after having crossed the event detection threshold (302), applying a surge recovery sequence in response to confirming the surge event, confirming a flameout event when the flameout confirmation time period expires and the rate of change of the combustor pressure remains below the surge confirmation threshold (304) after having crossed the event detection threshold (302), and applying a flameout recovery sequence in response to confirming the flameout event.