APU power outputs

Wait 30 seconds after EICAS powers before starting the APU. ^[99]

Start the APU

Start it normally and wait for 95% RPM. FSS says the generator and bleed outputs become available three seconds after the APU reaches that speed. ^[99]

Check the outputs

Check generator availability on ELEC. Check bleed valve and manifold indications on ECS. Their state also depends on the selected controls and electrical source. ^{[93] [101]}