Isn't this phrase generating ambiguity, in this circumstance, where a better description would not be ambiguous?
https://en.wikipedia.org/wiki/Helios_Airways_Flight_522
> An investigation into the crash by the Air Accident Investigation and Aviation Safety Board (AAIASB) concluded that the crew had neglected to set the pressurization system to automatic during the take-off checks. This caused the plane not to be pressurized during the flight and resulted in nearly everyone on board suffering from generalized hypoxia, thus resulting in a ghost flight [..] eventually crashed near Grammatiko, Greece, killing all 121 passengers and crew on board. It is the deadliest aviation accident in Greek history.
> Also, there isn't a "if you forget this everyone suffocates" button.
(Also note that the pilots did not move the pressurization system out of AUTO; you are blaming them for not discovering that a ground engineer had done so, mostly while they fought hypoxia.)
Yes, it was! Those pilots should totally have put that switch in the position that doesn't kill everyone! But they didn't, and then they got too hypoxic to fix it and now everyone's dead. It's almost like there's a switch that it's a really bad idea for pilots to forget about..
It is possible for two switches, and multiple external factors including scandalous levels of procedural error by the Captain, First Officer, and maintenance technician to kill them.
The MAX itself is an example of this. Both famous crashes definitely were pilot error AND were a bad design allowing that pilot error to occur.
it's not generating ambiguity for the people who need to know
for example, air traffic control and other pilots listening on the radio will know that this aircraft needs to be cleared to descend to a lower altitude and other traffic needs to get out of the way, be alert, etc.