OPERATING A TURBOPROP ENGINE FOR IN-FLIGHT RESTART

A method (400) for operating an aircraft turboprop engine (100) comprises controlling (402) a propeller (120) of the turboprop engine (100) based on a selected one of a reference propeller rotational speed and a minimum propeller blade angle while the turboprop engine (100) is running; detecting an inflight restart of the turboprop engine (100); and controlling (404) the propeller (120) during the inflight restart in accordance with at least one of a modified reference propeller rotational speed and a modified minimum propeller blade angle to maintain an actual propeller blade angle above an aerodynamic disking angle (302) during the inflight restart.