Crew Alerting System

Question 1

What does the CCAS provide?

Answer 1

• Warnings
• Malfunctions
• Abnormal situations
• Flight envelope deviations

Question 2

What is the design principle?

Answer 2

Lights out

Question 3

Where will an MFC failure be indicated?

Answer 3

On the CAP

Question 4

How will crew get alerts in case of an MFC failure?

Answer 4

Crew will have to monitor for local alerts

Question 5

What systems are only associated with CAP alerts?

Answer 5

• parking brake
• GPWS fault
• maintenance panel

Can only be extinguished by corrective action

Question 6

What is the alerting process?

Answer 6

1 - fault is detected by MFC and crew are notified by aural and visual alerts
2 - crew checks CAP to check which systems are affected
3 - crew finds pb for faulted system and takes appropriate action

Question 7

What alerts are not processed by the MFC?

Answer 7

• engine fire
• excess cabin differential pressure
• excess cabin altitude
• nacelle 2 overheat
• smoke

local alerts only

Question 8

What is a Level 0 alert?

Answer 8

Notify crew of situations not abnormal but of temporary nature

Blue, green or white lights

Question 9

What is a Level 1 alert?

Answer 9

Take place without CCAS activation

Signal the degradation of a system or a loss of redundancy

Local amber alert without chime

Question 9

What is a Level 2 alert?

Answer 9

Cautions

Yellow master caution

Single chime aural alert

Amber alert on CAP

Does not require immediate action (QRH)

Question 10

What is a Level 3 alert?

Answer 10

Warnings

Red master warning

CRC

Red light on CAP

Immediate corrective action required

Question 11

How are the CAP bulbs tested?

Answer 11

Two bulbs each

Tested with the annunciator light test switch during pre-flight

Question 12

What does the RCL button do?

Answer 12

Bring back any existing faults that were previously cleared with CLR button

Performed during descent and app phase

Question 13

What does the CLR button do?

Answer 13

Extinguish any amber CAP lights and reset MFC for that system

If CAP not cleared after a fault, crew will not be alerted to a subsequent fault of that system

Question 14

What does the TO INHI button do?

Answer 14

Inhibits CCAS alerts for non emergency conditions during take off roll

Question 15

What Level 3 warnings are inhibited by the TO INHI?

Answer 15

Smoke warnings and engine oil

Question 16

When is the to inhibit cancelled?

Answer 16

• when landing gear unlocks for retraction
• recall button pressed

Question 17

How are nuisance alerts cancelled?

Answer 17

The emergency cancel toggle switch

Affected system will not provide another warning unless:

• MFC reset by cycling aircraft power
• MFC 1B/2B is reset
• Recall pb is pressed
• To config test

Question 18

Excluded warnings from emergency cancel?

Answer 18

• landing gear not down CRC
• Vmo/Vfe/Vle overspeed clacker
• stall warning cricket
• pitch trim whooler
• ap disengaged

Question 19

Excluded warnings from emergency cancel?

Answer 19

• landing gear not down CRC
• Vmo/Vfe/Vle overspeed clacker
• stall warning cricket
• pitch trim whooler
• ap disengaged

Question 20

What does the to config test?

Answer 20

• flaps in to position
• pitch trim in the green arc
• aileron lock is disengaged
• pwr mgt is in to position
• travel limiting unit is in the LO SPD config

Question 21

What will happen if to config test is incorrect?

Answer 21

• master warning will flash
• CRC
• CONFIG will illuminate on the CAP
• FLT CTL will illuminate if pitch, trim or flap are not correctly positioned or if AIL LOCK is illuminated
• ENG will illuminate if the pwr mgt knob is not in take off position

Question 22

What alerts will you get if MFC 1B and 2B fail?

Answer 22

• Master caution lights will illuminate with no aural warnings
• MFC annunciated on CAP
• MFC 1B and 2B fault lights on overhead panel

Question 23

What alerts will you NOT get with MFC 1B and 2B failure?

Answer 23

• All level 2 alerts
• Level 3 - configuration, eng oil, prop brk,
• Rest of level 3s will only be processed by the CAP (no master warning or CRC)

Question 24

What triggers an altitude alert?

Answer 24

When ac approaches 1000ft of the target altitude selected on ADU Signals entering 250ft capture zone

Question 25

When do you get an overspeed alert Vle?

Answer 25

180 kt

Question 26

When will you get an overspeed alert Vfe?

Answer 26

Flaps 15 - 180kt Flaps 30 - 145kt

Question 27

When will you get the pitch trim alert?

Answer 27

When the pitch trim is in motion for more than 1 sec

Question 28

How are stall warnings detected?

Answer 28

By AoA probes CCAS will produce aural alert and MFC will activate the stick shaker MFC will activate stick pusher - operational as long as any two MFCs are working

Question 29

When is normal stall warning?

Answer 29

10.9 degrees AoA in non icing

Question 30

When is stall warning in icing conditions?

Answer 30

Between 7.7 and 8.4 degrees AoA in Cruise depending on flap position 8.4 degrees within ten minutes of take off or until flaps are retracted

Question 31

When are the stall alarm and stick pusher inhibited?

Answer 31

When the aircraft is on the ground

Question 32

When does stick pusher triggering occur?

Answer 32

Between 10.6 and 14.3 degrees, depending on power setting, flaps and horn anti ice selection

Question 33

When is stick pusher activation inhibited?

Answer 33

During first 10 seconds after lift off and within 500 ft of the ground (provided RA working)