Originally Posted by
compressor stall
PNF to PM was an Airbus change about 15 years ago. Might have had its genesis before then (ICAO?). It wasn’t a thought bubble in airlines here IIRC. they just went along with international standards (surprisingly in some cases).
The first formal introduction of the change from "Pilot Not Flying" (PNF) to "Pilot Monitoring" (PM) came from the FAA. Airbus started to introduce the term "Pilot Monitoring" into its flight manual and safety training documentation in 2002. However, the FAA had previously made this change in two advisory circulars, and Airbus followed suit.
FlySafe
PJ88