FLIGHT WARNING SYSTEM

Question 1

What is the function of the Flight warning computer

Answer 1

The FWC processes failure conditions and aircraft system data into visual and aural alerts, procedures and memo and status messages.

Question 2

What warnings are not processed by FWC

Answer 2

Stall, ground proximity and wind shear warnings and TCAS are not processed in the FWC

Question 3

What visual alerts are presented

Answer 3

Visual alerts can be presented via Master warning lights, Master Caution lights, Autoland caution lights, local lights and the Multifunction display system (MFDS).

Question 4

How are aural alerts presented and what can they be

Answer 4

Aural alerts which comprise attention getting chimes and dedicated aurals are presented via the flight deck loudspeakers and headsets. Procedures and memo and status messages are presented by MFDS only.

Question 5

What is the function of the SAP

Answer 5

The SAP enables automatic backup annunciation in the event the FWC fail’s completely.

Question 6

Define level 3 alert

Answer 6

Level 3 alerts require immediate corrective or compensatory action by the pilot.

Question 7

Define level 2 alert

Answer 7

Level 2 alerts require immediate pilot awareness and subsequent corrective or compensatory action.

Question 8

Define level 1 alert

Answer 8

Level 1 alerts require pilot awareness which may require action.

Question 9

How are visual alerts cancelled

Answer 9

The MWL and MCL alerts are cancelled when the fault is corrected or the relevant master light is depressed.

Question 10

Which level 3 annunciations are not cancelled in the normal way

Answer 10

Landing gear not down with flaps > 23 degrees

T/o config unsafe

Question 11

What is the function of Autoland caution lights

Answer 11

The Autoland caution lights located at the glare shield are dedicated to failures during and involving automatic landings.

Question 12

When are local lights cancelled

Answer 12

The local lights are cancelled when the fault is corrected.

Question 13

Which light cannot be dimmed by the brightness selector

Answer 13

Master warning lights, Master caution lights and Autoland caution lights.

Question 14

On which display units is FWC information presented

Answer 14

The FWC info is represented on the LH MFDU and RH MFDU.

Question 15

What happens if the display unit fails

Answer 15

If the LH MFDU fails the primary page is automatically displayed on the RH MFDU.

Question 16

In what priority and colour are alert messages presented

Answer 16

Alert messages appear in Red (level 3) or Amber (level 2 or 1) and will be presented in order of descending priority.

Question 17

What indication is there that there are more than 11 messages and how do you handle the situation

Answer 17

Page 1 is indicated if there are more than 11 alert messages. The cancel button can be operated to remove the amber alert messages in order to display page 2.

Question 18

What colour are memo messages when they may be displayed

Answer 18

Memo messages are displayed in Blue. They can only be presented when the number of alert messages leave space available.

Question 19

Where are procedures presented and when

Answer 19

Procedures are represented on the secondary page if space is available. Except for engine fire no procedures will be displayed on ground.

Question 20

When and where are status messages displayed

Answer 20

The status messages are displayed on the primary page automatically on ground if parking brake is set or both engines are out or by pressing the status page push button.

Question 21

Is the FWC operative in a battery power only situation

Answer 21

FWC is inop in a battery power only situation

Question 22

What can a SAP provide

Answer 22

SAP provides Red and Amber lights and two SAP generated dedicated aural alerts via flight deck speakers and headsets.
Cavalry charge for autopilot disconnection
Clacker for aircraft overspeed

Question 23

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

Answer 23

A FWS test can only be performed on ground. It consist of alert light filament test and automatic back up test.