BMM389EC
24th Apr 2006, 03:10
Hello All
Any idea why the A340-300s APU is limited to 25 000ft when starting on batteries?
Cheers
vapilot2004
24th Apr 2006, 03:26
Not a 340 expert by any means, but I would imagine the batteries may not have enough oomph for the longer and colder start above 25,000
cheers !
H Peacock
26th Apr 2006, 05:06
May be a bit of a red herring, but I know lots of aircraft that have an altitude limit for starting/relighting. I therefore suspect that above 25000ft the APU may be reluctant to start, or possibly overtemp.