View Full Version : What is the APU switch for ?
06-10-2004, 11:16 AM
06-10-2004, 11:29 AM
it is aux power unit
mostly paower for when the engones are not running
06-10-2004, 11:30 AM
An Auxiliary Power Unit (APU) is any gas turbine-powered unit delivering rotating shaft power or compressed air, or both, that is not intended for direct propulsion of an aircraft. APU's often drive aircraft generators, air-conditioning packs and in some cases can be used as an additional source of energy to start the primary propulsive engines
06-10-2004, 12:17 PM
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