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Old 17th Feb 2015, 10:34
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AF330
 
Join Date: Jul 2014
Location: Paris, France
Age: 23
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Thanks a lot mono,

1) So there are sensors around PFCV (FCSOV) which send a signal to the pack controller (I think it's the CTC on Boeing)?

2l Could you please explain me the automatic start process?
I know that when we push the master switch, it closes the X Bleed Valve. At that moment, the packs get isolated (bleed air only to the engines). But is the starter valve also direclty opened by the master switch? Or does the EIU send a signal to ECU to do it (I think that ECU controls the starter valve....) What happens next in the start process?

3) At what N (or EPR) % does ECU start ignition?

4) When we push both master switch, how is the bleed air seperated between Engine 1 & Engine 2? Is that valve (name? ) controlled by EIU or direcly by the switch?

Thanks mono,
AF330
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