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Atr72-500 Ccas

The CCAS uses three visual devices - MASTER WARNING and MASTER CAUTION lights, CREW ALERTING PANEL (CAP) lights, and LOCAL ALERT lights - to draw a crew's attention when failures are detected and guide them to the affected system. When an ACW Generator 1 failure is detected for example, the CCAS first illuminates the flashing MASTER CAUTION light and sounds a single chime, then lights the ELEC light on the CAP to identify the system, and finally alerts locally with a fault light on the ACW gen 1 push-button to isolate the specific failure.

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674 views1 page

Atr72-500 Ccas

The CCAS uses three visual devices - MASTER WARNING and MASTER CAUTION lights, CREW ALERTING PANEL (CAP) lights, and LOCAL ALERT lights - to draw a crew's attention when failures are detected and guide them to the affected system. When an ACW Generator 1 failure is detected for example, the CCAS first illuminates the flashing MASTER CAUTION light and sounds a single chime, then lights the ELEC light on the CAP to identify the system, and finally alerts locally with a fault light on the ACW gen 1 push-button to isolate the specific failure.

Uploaded by

cromnflexster
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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CCAS description

ATA 31

The CCAS draws crews attention when a failure is detected and guides the crew to the system affected by the failure
Three types of visual devices are used: MASTER WARNING and MASTER CAUTION lights
CREW ALERTING PANEL (CAP) lights
LOCAL ALERT lights

Detection sequence
INFORMATION

IDENTIFICATION

ISOLATION

Example: ACW Generator 1 failure

MASTER
CAUTION light
flashing
+ Single Chime

ELEC light on the CAP

Local alert: fault light on the


ACW gen 1 push-button

C - Centralized crew alerting system

p. 17

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