Challenger 604 Fire Protection

Front 1

Overheating in zone A of the left engine is indicated by

Back 1

L ENG FIRE warning EICAS message

Front 2

Zone B for the right engine includes the

Back 2

Right engine tailpipe and pylon

Front 3

Engine fire detection is accomplished by

Back 3

Continuous sensing elements (fire detection loops) which respond to a temp rise with a proportionate resistance decrease

Front 4

The L FIRE FAIL caution EICAS message indicates

Back 4

The left engine fire detection loop has a short circuit

Front 5

Pushin the LH ENG FIRE PUSH switchlight

Back 5

Closes the left firewall valve, left 10th stage shutoff valve, left 14 stage shutoff valve, and left hydraulic valve and turns off the ignition and arms the left engine squibs on both firex bottles.

Front 6

The contents of the engine firex bottles is discharged into the related

Back 6

Engine nacelle (zone A)

Front 7

Electrical power for squib firing is supplied from

Back 7

The emergency bus

Front 8

The crew responds to a jetpipe overheat by

Back 8

Reducing engine power or engine shutdown, necessary

Front 9

Illumination of the BOTTLE 1 ARMED PUSH TO DISCH switchlight indicates

Back 9

The No. 1 engine firex bottle squib is armed

Front 10

The ENG BOTTLE 1 LO caution EICAS message

Back 10

Normally appears after he BOTTLE 1 ARMED PUSH TO DISCH switchlight is pushed

Indicates the No. 1 engine firex bottle has low pressure

Front 11

APU fire extinguishing is accomplished by

Back 11

Shutting down the APU if necessary and discharging the APU firex bottle

Front 12

The APU SQUIB1 OK advisory EICAS message indicates

Back 12

The squib firing circuitry and the No. 1 squib in the APU firex bottle is intact(continuity ok)

Front 13

The precharge pressures for each firex bottle should indicate

Back 13

600 to 625 pounds