unservicabilities like that are not extraordinary not even a pump failure is extraodinary! in my opinion at least these are things that could resonably be forseen as they do happen and as part of the aircraft, will happen.
extraordinary to me would be things like a lighting strike to a helicopter. that causes a lot of damage! for an airliner i would say driving a catering truck into a fuselage or steps clipping a wingtip are extraordinary!