Warning Systems

Question 1

(ALL) Recall how to silence an aural overspeed warning.

Answer 1

Overspeed Warning system
 Push either Master WARNING/CAUTION reset switch
 Reduce the airspeed below Vmo / Mmo

Question 2

(756, NG, 777, 88) Recall what conditions will activate the landing gear configuration warning.

Answer 2

Landing Configuration Warning system
 The airplane is in flight, any landing gear is not down and locked, and the flaps are in a landing position 25 or 30.
Note: The Master WARNING light and aural cannot be
cancelled.

Or

 The airplane is in flight, any landing gear is not down and locked and either or both thrust lever(s) are moved to idle with the radio altitude below 800 feet.
Note: The Master WARNING light and aural can be
cancelled.

Question 3

(ALL) Recall what conditions will activate the takeoff configuration warning

Answer 3

Either thrust lever advanced to the takeoff range on the
ground with:
 - The parking brake set
 - The stabilizer trim not in 
    the green band
 - The speedbrake lever not 
    in the DOWN detent
 - The flaps not in a takeoff 
    position

Question 4

(ALL) Recall what phases of flight the stall warning system is functional during

Answer 4

All phases of flight.

Question 5

(ALL) Explain what the Pitch Limit Indicator (PLI) indicates

Answer 5

It indicates the pitch limit at which stick shaker activation
will occur.

Question 6

(ALL) Identify where TCAS target symbology is displayed.

Answer 6

• On the TA / VSI if selected
• On the Radar display, if
  selected

Question 7

(ALL) Recall the indications of a Resolution Advisory (RA)

Answer 7

(ALL) Recall the indications of a Resolution Advisory (RA)
 Vertical guidance is displayed on the periphery of the TA/VSI
 An aural voice alert sounds
 TCAS RA symbology (red square) appears on the TA/VSI

Question 8

(ALL) Explain what color/symbol represents a TA.

Answer 8

An amber filled circle

Question 9

(ALL) Explain what color/symbol represents an RA.

Answer 9

A red filled square

Question 10

(ALL) Recall that GPWS provides aural alerts for potentially hazardous flight conditions involving imminent impact with the
ground

Answer 10

The GPWS alerts the crew when any of the following occurs:
 Excessive descent rate: 
   “SINK RATE”
 Excessive terrain closure 
    rate: “TERRAIN”
 Altitude loss after takeoff 
   or go-around: “DON’T 
   SINK”
 Unsafe altitude while not in 
    the landing configuration: 
    “TOOLOW GEAR” or, 
    “TOO LOW FLAPS,”
 Descent below glideslope: 
    “GLIDELOPE,”
 Descent below Decision 
   Height: “MINIMUMS.”
 An EGPWS “TERRAIN” 
   WARNING (red) indicates 
   20-30 seconds from 
   projected impact with 
   terrain.
 An EGPWS “TERRAIN” 
   CAUTION (amber) 
    indicates 40-60 seconds 
    from projected impact with 
    terrain.

Question 11

(ALL) Recall when Predictive Windshear (PWS) CAUTION and WARNING alerts are available on takeoff or approach.

Answer 11

 The PWS mode is automatically enabled for 
takeoff when:
 - The aircraft is on the 
   ground and the thrust 
    levers are set for takeoff

 The PWS mode is automatically enabled in flight when the
aircraft is below 2300 feet AGL.
This is when the system becomes enabled, but the CAUTION and WARNING alerts are not available until the aircraft is below 1200 feet AGL

Question 12

(ALL) Recall when Windshear Immediate – Alerts are available.

Answer 12

Enabled below 1500 feet Radio Altitude (RA)

Question 13

(ALL) Explain the meaning of the different colors displayed by the enhanced GPWS in the HSI terrain display.

Answer 13

 These are known as “look – ahead displays”
 Color and density vary based on terrain height versus
airplane altitude
 Solid RED and AMBER represent terrain conflicts if flight continues toward the terrain

Question 14

(NG, 756) Recall how to display terrain information on the HSI. (2 different options)

Answer 14

Select TERR on the EFIS control panel

 Verify the white TERR discrete light illuminates on the forward
panel

 Available in EXP VOR, ILS and MAP, modes

Select TERR on the EFIS control panel

 Verify TERR colored in CYAN is displayed on the HSI.

 Available in VOR, APP and MAP modes

Question 15

(756) Recall when the Master CAUTION, Master WARNING and associated aural warnings are inhibited

Answer 15

NOTE: The EICAS messages and indicator lights are not inhibited.
 The Master CAUTION inhibit begins at 80 KIAS and continues
until: 400 feet AGL
OR
20 seconds elapsed time following nose gear strut extension.

 The Master WARNING inhibit begins at nose gear strut extension during rotation and continues until:
400 feet AGL
OR
20 seconds elapsed time following nose gear strut extension.

Question 16

(756) Recall and locate the following EICAS indications:

Warning, Caution, Advisory and Status messages.

Answer 16

 Warnings are normally displayed on the upper EICAS CRT in red.
 Cautions are displayed below the Warnings in amber.
 Advisories are displayed below the Cautions and are indented one character to the right.
 A STATUS “Que” in CYAN, in the top left corner of the lower
EICAS CRT, appears when a new STATUS message exists.

 The status messages may be viewed on the lower EICAS
screen by pushing the DISPLAY STATUS switch.

Question 17

(756) Explain what EICAS status messages indicate.

Answer 17

 Status messages identify system faults affecting airplane dispatch and are not considered crew alerts. These messages are displayed on the EICAS STATUS page on the lower
EICAS screen.

Note: EICAS STATUS messages may be erased on the ground prior to dispatch, with no logbook entry required. If they cannot
be erased, they must be addressed.

Question 18

(756) Recall the functions of the EICAS CANCEL AND RECALL switches.

Answer 18

CANCEL switch
 Push –
- Displays the next page of EICAS messages when
additional pages exist
- Cancels caution and advisory messages when the last page is displayed

Note: Any existing Warning and Communication messages remain.

RECALL switch
 Push –
- Displays the previously cancelled EICAS messages, if
the associated condition(s) still exist
- Displays the first page of messages when multiple pages exist.

Question 19

(756) Recall the function of the GND PROX G/S INHB

(Glide Slope Inhibit) switch.

Answer 19

Ground Proximity Glide Slope Inhibit (GND PROX G/S INHB)
switch
 Push –
- Inhibits the ground proximity GLIDE SLOPE Master
CAUTON when below 1,000 feet radio altitude.

Question 20

(756) Recall the function of the GND PROX FLAP OVRD switch.

Answer 20

Push (OVRD visible) –

• Inhibits the ground proximity TOO LOW FLAPS caution
• Inhibits the ground proximity TOO LOW TERRAIN caution

Question 21

(756) Recall the function of the GND PROX / CONFIG GEAR OVRD switch.

Answer 21

Push (OVRD visible) –

• Inhibits the ground proximity TOO LOW GEAR caution
• Inhibits the ground proximity TOO LOW TERRAIN caution
• Inhibits the landing configuration warning siren

Question 22

(756) Recall the function of the GPWS TERR SYS OVRD switch (as installed).

Answer 22

Push (OVRD visible) – inhibits look–ahead terrain alerts and displays

Question 23

(756) Recall the meaning of an illuminated ALT ALERT

(Altitude Alert) light on the center forward panel.

Answer 23

Illuminated (amber) –
- A deviation between 250-750 from the selected MCP
altitude
- A deviation between 300-900 from the selected MCP
altitude.
Note: The above deviation differences depend on the ship number