Warning Systems Flashcards
(ALL) Recall how to silence an aural overspeed warning.
Overspeed Warning system
Push either Master WARNING/CAUTION reset switch
Reduce the airspeed below Vmo / Mmo
(756, NG, 777, 88) Recall what conditions will activate the landing gear configuration warning.
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.
(ALL) Recall what conditions will activate the takeoff configuration warning
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
(ALL) Recall what phases of flight the stall warning system is functional during
All phases of flight.
(ALL) Explain what the Pitch Limit Indicator (PLI) indicates
It indicates the pitch limit at which stick shaker activation
will occur.
(ALL) Identify where TCAS target symbology is displayed.
- On the TA / VSI if selected
- On the Radar display, if
selected
(ALL) Recall the indications of a Resolution Advisory (RA)
(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
(ALL) Explain what color/symbol represents a TA.
An amber filled circle
(ALL) Explain what color/symbol represents an RA.
A red filled square
(ALL) Recall that GPWS provides aural alerts for potentially hazardous flight conditions involving imminent impact with the
ground
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.
(ALL) Recall when Predictive Windshear (PWS) CAUTION and WARNING alerts are available on takeoff or approach.
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
(ALL) Recall when Windshear Immediate – Alerts are available.
Enabled below 1500 feet Radio Altitude (RA)
(ALL) Explain the meaning of the different colors displayed by the enhanced GPWS in the HSI terrain display.
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
(NG, 756) Recall how to display terrain information on the HSI. (2 different options)
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
(756) Recall when the Master CAUTION, Master WARNING and associated aural warnings are inhibited
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.
(756) Recall and locate the following EICAS indications:
Warning, Caution, Advisory and Status messages.
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.
(756) Explain what EICAS status messages indicate.
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.
(756) Recall the functions of the EICAS CANCEL AND RECALL switches.
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.
(756) Recall the function of the GND PROX G/S INHB
(Glide Slope Inhibit) switch.
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.
(756) Recall the function of the GND PROX FLAP OVRD switch.
Push (OVRD visible) –
- Inhibits the ground proximity TOO LOW FLAPS caution
- Inhibits the ground proximity TOO LOW TERRAIN caution
(756) Recall the function of the GND PROX / CONFIG 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
(756) Recall the function of the GPWS TERR SYS OVRD switch (as installed).
Push (OVRD visible) – inhibits look–ahead terrain alerts and displays
(756) Recall the meaning of an illuminated ALT ALERT
(Altitude Alert) light on the center forward panel.
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