What action should the crew take upon detecting smoke in the flight deck from an unknown origin?
Refer to figure.
Generally, to put it simply, the appropriate actions depend on the aircraft type, the situation, and even whether there are people on board to help.
When faced with a situation like smoke in the cabin of a single-engined helicopter, immediate action is key. In this scenario, the best initial response could be smoke removal, unless the fire is visible and poses a greater threat.
So, ventilating the cabin would be sensible, then landing immediately and evacuating the aircraft, especially if the smoke origin is unidentified.
If you have passengers and/or crew to help, they can open the windows and help fight any fires.
Therefore, the most appropriate option is to "Divert at maximum speed to the nearest suitable airfield"
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