You’re the Co-Pilot.
*) Lock the Pilot out of the cabin while he’s using the head.
*) Switch off ADS-B/Transponder/ACARS
*) Depressurize the cabin (maybe in concert with a steep ascent or dive)
*) After some time, repressurize and continue on...
So, what about the part of ACARS that sends engine data to Rolls Royce. Can that be turned off? If so, good for the co-pilot in this scenario. If not, it will send report to RR upon landing, or report nothing if the aircraft crashes.
(Also, the INMARSAT pings may continue regardless?)
Does this scenario work?
Is it that simple for someone locked in the cockpit to kill everyone on board?