4. Flight Warning System Flashcards

1
Q

What is the function of the FWC?

A

It processes failure conditions and aircraft systems data into visual and aural alerts, procedures and status messages.

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2
Q

What warnings are not processed by the FWC?

A
  • stall warnings
  • GPWS warnings
  • windshear warnings
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3
Q

What visual alerts are presented?

A
  1. Master Warning Lights (MWL)
  2. Master Caution Lights (MCL)
  3. Auto-land Caution Lights
  4. Local Lights
  5. Multi Function Display System (MFDS)
  6. Engine alerts - light in appropriate fuel lever
  7. Engine Fire - light in fire handle
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4
Q

How are aural alerts presented and what can they be?

A
  • presented via flight deck speakers and headsets
    1. cavalry charge = auto pilot disconnect
    2. whooler = trim
    3. clacker = overspeed warning
    4. C chord = altitude alert
    5. Buzzer = cabin call
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5
Q

What is the function of the SAP?

A

automatic backup in case FWC fails completely
SAP comes on automatically

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6
Q

Define level 3 alert?

A
  • Requires immediate corrective or compensatory action
  • Repetetive triple chime
  • Master Warning Light (MWL)
  • MFDU Alert Message in red
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7
Q

Define level 2 alert?

A
  • requires immediate awarenes and subsequent corrective or compensatory action
  • double chime
  • 2 flashing amber Master Caution Lights (MCL)
  • local amber light
  • MFDU alert message in amber
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8
Q

Define level 1 alert?

A
  • requires pilot awareness
  • single chime
  • MFDU alert message in amber
  • and/or local light
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9
Q

How are visual alerts on the MFDU cancelled?

A
  • fault is corrected
  • relevent Master Light is pressed
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10
Q

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

A
  • Landing Gear not Down (flap 23 or more)
  • Take off config alerts

These alerts cannot be cancelled until the condition is corrected.

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11
Q

What is the function of the AUTO LAND caution lights?

A

alert regarding failures during and involving automatic landings

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12
Q

When are local lights cancelled?

A
  • when the fault is corrected
  • affected push button is pressed
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13
Q

Which lights can be dimmed by the brightness selector?

A
  • Master Warning Light
  • Master Caution Light
  • Auto Land caution lights
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14
Q

on which display units is FWC information presented?

A

Multi Function Display Units (2 x MFDU’s)

Left MFDU = Primary engine instruments, Alerts, Memos (blue)

Right MFDU = Secondary engine parameters, procedures, status messages, APU

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15
Q

What happens automatically if a display unit fails?

A

Left DU fails = primary page displayed automatically on Right DU

Secondary Page can be displayed by pressing the transfer button.

However, the secondary Page cannot be displayed if an alert concerning a primary engine parameter is displayed

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16
Q

In what priority and colour are alert messages presented?

A
  • Alerts presented in order of descending priority (up to 11 alerts)
  • Level 3 alerts in red
  • Level 2 and level 1 alerts in amber
17
Q

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

A
  • indicated by “page 1” on MFDU
  • CANCEL button removes presented amber messages to display page 2
  • Red Alert messages cannot be removed
  • RECALL button restores messages in order of descending priority
18
Q

What colour are memo messages and when can they be displayed?

A
  • Blue
  • presented when the number of alert messages leaves space available
19
Q

Where are procedures presented and when?

A
  • Automatically presented on the secondary page
  • Maximum 2 procedures can be displayed if space is available
20
Q

When and where are STATUS messages displayed?

A
  • display on the STATUS page on the RH MFDU.
  • indicate failed or switched off systems.
  • displayed automatically at engine shutdown or when the park brake is on, or when the STATUS page is manually selected
21
Q

What indication is there that STATUS messages are present?

A

white STS at bottom RH corner of left MFDU

22
Q

Is the FWC operative in battery power only situation?

A

No

23
Q

What can the SAP provide?

A
  • main Red and Amber annunciator lights
  • two aural alerts (cavalry charge and clacker)
24
Q

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

A
  • on the ground only
  • Alert light filament test + automatic backup test
  • completion indicated by a single chime and a green COMPL light