SFI = Synthetic Flight Instructor (please don't misunderstand the English, the title should read <<Synthetic Flight>> Instructor not <<Synthetic Flight Instructor>> - if you see what I mean) A man or woman who instructs using a 'synthetic flight device' such as a Flight Simulator.
Wet Hours - in the context of flight simulator training normally refer to the flight hours that use an SFI provided by the sim centre. 'Dry' hours are those flight hours for which the trainee uses an 'externally sourced' SFI.
'Wet' hours are normally more expensive than 'Dry' hours.
I use the term 'flight hours' in the context of Flight Simulators but I am sure you will understand that to mean correctly - the time a candidate occupies the training device.
Good Luck
G.
