| Grey Backdrop |
| Bleed Air Panel 800/900 |
Air Conditioning PACK Switch
OFF –
AUTO –
HIGH –
OFF –
- Pack is signalled OFF.
AUTO –
- With both packs operating, each pack regulates to low
flow.
- With one pack operating, the operating pack regulates
to high flow in flight with the flaps up.
- When operating one pack from the APU (both engine
BLEED air switches OFF), regulates to high flow.
HIGH –
- Pack regulates to high flow.
- Provides maximum flow rate on the ground with the
APU BLEED air switch ON.
