I would agree with most of the above, however my Airline has gone to great expense to fit 3 sockets at 115VAC 60 Hz in the flightdeck specifically to power laptops, they do not spend money for no reason. In the past I have powered an old laptop from 400hz the transformer got quiet warm. Also caution 115VAC wires trailing about they could be cut be a seat track,but hopefully the CB would pop!!