AndrewC75,

Your description of a "half-second power loss" sounds exactly like what happens when a power source drops off line in a DC9/MD80. You'll see the same thing during engine start as each engine's generator takes over it's busses from the APU or GPU.

The question is WHY you were getting the power source dropping off line? I really can't tell from your description what might have been happening but it would happen if an engine failed and it would also happen if a generator failed. (Obviously, when an engine fails the associated generator also fails due to lack of rotation) Was the "bump" from tubulance? It would have to be a really big bump to cause problems with the engine or generator.

Efrem,

What kind of airplane were you on? The DC9/MD80 has cargo doors which open inward so they couldn't have been getting in front of the engines. Can't think of an airplane with tail mounted engines and outward opening belly doors.