There is also a RAT at the back that can be deployed to generate some power(~5-10 minutes max) in case of severe emergency in Air. It is what you hear sometimes, when the aircraft is making a very shrill noise flying over your head.
However, if it is not a test flight, a RAT deployment should make you very uncomfortable and worried…
However, if it is not a test flight, a RAT deployment should make you very uncomfortable and worried…