Flight Warning System

Question 1

Main components of FWS?

Answer 1

Two Chanel flight warning computer
MFDS
SAP

Question 2

What is the function of the Flight Warning Computer?

Answer 2

Processes failure conditions and aircraft system data in to visual and aural alerts, procedures and memo and status messages

Question 3

What warnings are not processed by the FWC?

Answer 3

Stall warning
GPWS
Wind shear warnings

Question 4

What visual alerts are presented by the FWC?

Answer 4

MWL, MCL, and Autoland light.

Plus display on MFDU and local light

Question 5

FWS: How are the aural alerts presented and what can they be?

Answer 5

Level 3 - repetitive 3 tone
Level 2 - 2 tone
Level 1 - 1 tone.

Question 6

What is the function of the SAP?

Answer 6

Standby Annunciator Panel - Provides a backup in case of complete FWC failure.

Question 7

Define Level 3 Alert

Answer 7

Requires immediate corrective or compensatory action by the pilot

Question 8

Define Level 2 Alert

Answer 8

Requires immediate pilot awareness and subsequent corrective or compensatory action

Question 9

Define Level 1 Alert

Answer 9

Require pilot awareness (which may require action)

Question 10

FMS: How are visual alerts cancelled?

Answer 10

By pressing MWL or MCL

Question 11

FMS: Which level 3 annunciations are not cancelled in the normal way?

Answer 11

LDG gear not down with flap >23 degrees

Unsafe Take off configuration

Question 12

What is the function of the auto land caution lights?

Answer 12

To tell us a failure during and involving an automatic landing

Question 13

When are local lights cancelled?

Answer 13

When procedure on MFDU or QRH tells us to.

Question 14

Which light cannot be dimmed by the brightness selector?

Answer 14

MWL, MCL and autoland

Any new Level 3 or 2 alert until pressed.

Question 15

On which display units is FWC information displayed on?

Answer 15

MFDS/MFDU

Question 16

FWS: What happens if a display unit fails?

Answer 16

Remaining MFDU reverts to Primary page

Question 17

In what priority and color are alert messages presented?

Answer 17

Alert 3 (Red)
Alert 2 (Amber)
Alert 1 (Amber)
Alert 0/Memos (Blue)

Question 18

FWS: What indication is there that there are more then 11 messages and how do you handle the situation?

Answer 18

There will be 11 items plus Page 1

Can get to next page by pressing CNL to remove AMBER messages. Then RCL as required.

Question 19

What color are memo messages and when may they be displayed?

Answer 19

Blue and displayed if room permits.

Question 20

FWS: Where are the procedures presented and when?

Answer 20

Secondary page. If room permits max 2 will appear. Will appear automatically as per priority order on primary page.

Question 21

When and where are status messages displayed?

Answer 21

Secondary page when pressing STS. Will display automatically on the ground with park brake set or both engines are out. The existence of STS messages depend on the actual flight phase.

Question 22

Is the FWC operative in a battery power only situation?

Answer 22

No

Question 23

What can the SAP provide?

Answer 23

Backup system to FWS. Provides basic red and amber lights only. Only stall and over speed aural tone and no master or local lights.

Question 24

When can you do a FWS test and what does it consist of?

Answer 24

On ground only. 
Press WARN SYS roughly 30secs
Completion of test is with a chime
If fault, TEST remains on
If no fault shows CMPL
Normal operation is resumed 30seconds after.