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6th Jul 2012, 10:01

#12 (permalink)

despegue

Join Date: Oct 2002

Location: In my seat

Posts: 822

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Regarding APU on the classic: either the Garret or the Sunstrandt has a operational ceiling of 35000ft. Beware as the aircraft certified ceiling is Fl 370...So there is a limitation. On NG, all APU versions work untill aircraft certified ceiling.