Originally Posted by yasir1212

There are a few different ways to reset the ACARS system on the aircraft (and no, you don't have to power down the aircraft in most cases), contact MX control and they will guide you. If you pay close attention to the failures, you'd realize that majority of the ACARS issues are normally on dual-fms equipped airplanes, where the single units hardly ever have any problems as compared to the dual units. With me personally, I've noticed that out of all the ACARS problems that I've had (ACARS fail, screen goes blank, etc), I would venture to say that about 80-90% of them have been with a dual-fms equipped airplane. Any MX gurus or other folks with great ACARS knowledge care to elaborate as to why there is a higher number of ACARS failures in dual units versus single?