Well, the FAA are right and truly concerned, hence the emergency airworthiness directive.
Engine rollback is NOT good, at any time, and especially at critical phases of flight.
FADEC.
Touted by many as the bees knees of reliable engine performance.
Software algorithm, my foot.
Give me a proper FLIGHT ENGINEER every darn time.
Besides, he get wet on the walkaround when it's raining...