645 - ATPL - The installation and use of on-board oxygen generators is such that 1 - the smoking ban is imperative when used 2 - in case of accidental drop of the 'continuous flow' passenger masks, no crew action is required 3 - no trace of grease must be found in the system assembly 4 - the system's filling adaptors must be greased with non-freezing or graphite grease The combination which regroups all of the correct statements is:

Question 645 - Aircraft General Knowledge - Airframe, Systems, Powerplant - ATPL - Airline Transport Pilot license