Warning Systems

Question 1

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

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

Recall what conditions will activate the takeoff configuration warning

Answer 3

Takeoff Configuration Warning system
• 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

Recall the stall warning system is functional during ___________________

Answer 4

all phases of flight.

Question 5

Explain what the Pitch Limit Indicator (PLI) indicates.

Answer 5

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

Question 6

Identify where TCAS target symbology is displayed.

Answer 6

• On the TA / VSI if selected

* On the Radar display, if selected

Question 7

Recall the indications of a Resolution Advisory (RA)

Answer 7

• 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

Explain what color / symbol represents a TA.

Answer 8

• An amber filled circle

Question 9

Explain what color / symbol represents an RA.

Answer 9

• A red filled square

Question 10

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

Answer 10

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: “TOO LOW 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

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

Recall when Windshear Immediate – Alerts are available.

Answer 12

• Enabled below 1500 feet Radio Altitude (RA)

Question 13

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

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

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

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

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

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

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

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

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

Answer 21

Ground Proximity / Configuration Gear Override (GEAR OVRD) switch
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

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

Answer 22

Ground Proximity Terrain Override (TERR OVRD) switch

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

Question 23

Recall the meaning of an illuminated ALT ALERT (Altitude Alert) light on the center forward panel.

Answer 23

Altitude Alert (ALT ALERT) light
• 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