Hello everyone,

I have problem with start the bleed air of left and right engine. On same status Cold and Dark i start engine on runaway and on gate, but on gate both engine bleed air show off and on the runaway everything start perfect from Cold & Dark. I made many changes and start engine in different ways, but its same on gate can't start bleed air of the engine. Can someone help me i will atach picture

https://postimg.cc/47fDFp55

The APU must be running and APU bleed selected ON to provide bleed air to start an engine.

Yes i start firts the APU and bleed air for the APU, but when im on the gate can't start bleed air on the engine and from the same situation on runway i doesn't have problem