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Eng Start External Air

Checklist for engine-start over external air support.

Before connection of external pneumatic air
Packs 1 & 2
(prevents pack contamination)
Before Start
Engine Bleeds 1 & 2 OFF
X-Bleed OPEN
When cleared to start
Engine 2
(the minimum recommended starter air supply pressure is 30 PSI with starter valve open)
After Engine 2 is started

- If External Pneumatic Air is used to start Engine 1

Engine 1 Start
When started:
External Pneumatic Air

X-Bleed AUTO
Engine Bleeds 1 & 2 ON
Packs 1 & 2 ON

- If Crossbleed Engine Start is used to start Engine 1

External Pneumatic Air REMOVE
Packs 1 & 2 ON
Engine Bleed 2 ON
Crossbleed Engine Start Procedure APPLY
External Electric Power DISCONNECT

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