I'm with Rainboe on this. Simply because it has always been done this way is no logical response to a considered change to procedures.
In this case there is no internal power on the aircraft: if external power is connected and running the 115VAC external bus, the Ground service buses and the battery chargers are powered on the 737NG. If the battery switch is off there are no indications on the flightdeck.
As to refuelling, the refuellers are not permitted to connect the hose or start refuelling without the Captain's permission.
Last edited by The Real Slim Shady; 16th Aug 2008 at 10:46.
Reason: Spellchecker changed the E to a W on Rainboe's user name