PPRuNe Forums - A320 engine start external air

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newonthebus

25th June 2019 19:38

A320 engine start external air

hey folks, new on the 320,

to start the engine using external HP (or crossbleed), must the mode select be at ign/start or remain at norm? refer to supp. proc./engine/...
if so, why does the fcom just say engine.....start iso engine mode select.......ign, engine master sw.........on, etc. ? seems not to be in line with the other sop.

Thank you!

Tom Sawyer

26th June 2019 05:49

Ignition/Start.......start process is the same as normal just using a different source of air than the APU supply and with air x-bleed selected to open.

sonicbum

4th July 2019 09:55

Quote:

Originally Posted by Goldenrivett (Post 10509223)

My FCOM just says "Use the normal engine start procedure" for the first engine and "Apply the normal engine start procedure" for the second engine.
We leave the engine mode selector at Normal. FADEC does all that is required with the position of the ENG Master switch and on ground logic.
However, if the external pneumatic power group only delivers low pressure, then we use IGN/START position.

How are You going to start the engine by leaving the engine mode selector on NORM ??

Goldenrivett

4th July 2019 11:50

Quote:

How are You going to start the engine by leaving the engine mode selector on NORM ??

Oops! I had a brain fart.
I'll delete that rubbish.

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