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3 Cards in this Set

  • Front
  • Back

APU GENERAL

Provides 115V AC 40kVA and pneumatic power


Controlled by dedicated FADEC


INFO found on EICAS (RPM % and EGT)


Feeds from RIGHT tank, but can be cross-fed from Left


DC power only: DC Pump Feeds


AC Power available: AC Pump Feeds


Mainly used for: ECS on Ground and Engine Start

APU ALTITUDE LIMITS

MAX Altitude for START - 30,000'



MAX Altitude for Supplying:


AC Power - 33,000'


Bleed Air for Engine Start - 21,000'


Bleed Air for ECS ( A/C and Pressurization) - 15,000'

APU START

GROUND


Electronic Starter Controller fed by Battery 2


Ignition at 6%


FF after 0.5 seconds


Starter cutout at 50%



FLIGHTIgnition at 7 - 17%


FF after 0.5 secondsStarter cutout at 50%