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31st May 2011, 02:34

#828 (permalink)

galaxy flyer

Join Date: Dec 2002

Location: Where the Quaboag River flows, USA

Age: 71

Posts: 3,414

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All indications of AIRSPEED are based on air passing into the pitot tubes, processed by ADIRUs for output to the PFD or ISIS. Inertial is not used, and not usable, for airspeed.

One is not "dispatched" in alternate or abnormal law.