The energy pumping works. N2 crosses 15%, fuel is injected, and a glorious "bang" signals engine light-off. You recover, declare an emergency, and land. This has happened twice in A320 history (both due to total fuel starvation followed by successful windmill restarts using the Sierra principle).
: Success depends on using specific pitch and thrust settings derived from a Mental Calculation Booklet . sierra pattern a320
It serves as a "warm-up" during simulator sessions like the , bridging the gap between basic maneuvers and complex jet operations. Purpose and Training Context The energy pumping works