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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%
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