LarryJ,
What I perceived as a power loss occured simultaneously with the bump and slight deceleration. The whole thing lasted maybe 1/2 second. The deceleration wasn't enough that bodies lurched - just enough to notice. If indeed this was turbulence, it may not have been a power loss at all... I may be remembering a power loss which was really just a slight change in velocity or attitude. I don't clearly remember the cabin lights or A/C going out. May have - not sure. The pilot said turbulence, so I suppose I should trust that - I was just curious as I'd never experienced such here-one-second-gone-the-next and loud turbulence.