Disclosed is a method for cooling a turbo-engine component, the method comprising guiding a working fluid flow (50) along a hot gas side surface (110) of a wall (100) of the component and in a main working fluid flow direction, discharging a coolant discharge flow (350) at the hot gas side surface (110) from a coolant discharge duct (210) provided in the wall (100), supplying a coolant supply flow (310) to the coolant discharge duct (210) and through a coolant supply path, characterized in discharging the coolant supply flow (310) into the coolant discharge duct (210) as a free jet (340) oriented across a cross section of the coolant discharge duct (210), and directing the free jet (340) onto an inner surface section (211) of the coolant discharge duct (210), thus effecting impingement cooling of the inner surface section (211). Further disclosed is a turbo-engine component adapted and configured to perform the method.
