Challenger 604 Pneumatic Systems

Front 1

The BLEED PRESS indications shown on ED 2 represent bleed air pressure in the

Back 1

Left and Right 10th stage manifolds

Front 2

All valves in the 10th and 14th stage distributions systems are

Back 2

Spring loaded closed except the 14th stage SOVs and the engine anti ice valves

Front 3

14th stage bleed air is used for

Back 3

Wing and Cowl anti ice

Front 4

Bleed air in the 10th stage bleed manifold is routed

Back 4

to the air conditioning packs

Front 5

The L switchlight in the 10th STAGE switch group

Back 5

Closes or prevents opening of the APU LCV if pressed in

Front 6

The 14th stage isolation valve can be opened if

Back 6

Either engine is rinning, wing anti icing is turned on, and the 14th stage ISOL switchlight is pressed

Front 7

Each engine supplies 14th stage bleed air

Back 7

For its own cowl anti icing and thrust reverser operation

To the onside wing for anti icing in normal operation

To the offside wing if the 14th stage isolation valve is opened

Front 8

Bleed air duct leaks in the 10th stage manifolds is detected by

Back 8

A pair of loops (A and B) for the left and right manifolds

Front 9

A bleed air leak in the line to the left pack would be indicated by

Back 9

L 10TH DUCT warning EICAS message, illumination of the red DUCT FAIL caption in the L switchlight in the 10TH STAGE switch group, and "Bleed Air Duct" aural alert

Front 10

The ANTI-ICE DUCT warning EICAS message is shown for

Back 10

14th stage bleed air duct leaks in the wing anti icing lines or failure of either piccolo tube in the wing leading edges

Front 11

The amber APU LCV FAIL caution EICAS message and illumination of the amber FAIL caption in the APU LCV switchlight indicates

Back 11

The APU load control valve failed to close contrary to the 10TH STAGE swithch group interlock

Front 12

Selecting LOOP A on the BLEED AIR panel

Back 12

Shorts loop B. LOOP A TEST OKAY advisory message should appear with no other alerting or indications