Challenger CL-605 APU
Hello All,
I read that the 605's APU could be started up to 20,000ft and utilized up to 20,000ft.
Has anybody replaced or modified the existing APU in order to give the aircraft the capability to use it at a higher altitude (say 30 or 35,000ft) ?
Is it reasonably conceivable ?
Thanks a lot for your valuable inputs,