Warning Systems

Question 1

The primary method for alerting the crew to non-normal conditions is

Answer 1

“system alert messages.”

Question 2

Equipment faults which may affect airplane dispatch capability are shown by

Answer 2

status messages.

Question 3

The rectangular icon is removed when the checklist is

Answer 3

complete or when inhibited by the checklist of another message.

Question 4

There are three priority levels with the EICAS alert messages.

These are

Answer 4

warning, caution and advisory level.

Question 5

The red EICAS alert messages

will always remain displayed and cannot be

cancelled by the flight crew.

Amber EICAS alert messages

Answer 5

can be cancelled and

recalled by pushing the CANC/RCL switch.

Question 6

Communication alerts are

displayed in white below the alert messages.

The communication alerts cannot

Answer 6

be cancelled by pushing the CANC/RCL switch.

Question 7

To provide a cross reference

to the item or system for dispatch capability,

all status messages are

Answer 7

listed in the Minimum Equipment List (MEL).

Question 8

Each successive page can be displayed by pushing the

Answer 8

CANC/RCL switch.

Warning messages are displayed at the top of each page.

Question 9

There is no page numbering for numerous warning messages.

It is not possible to display other pages

Answer 9

in this situation until the warnings no longer exist.

Question 10

The most recent EICAS memo message is displayed

Answer 10

at the bottom of the memo messages.

Question 11

If there are additional status pages, pushing the

Answer 11

STAT button will display each succeeding page.

This works in a similar manner to the CANC/RCL switch.

Question 12

To display currently displayed engine indications

and additional EICAS

maintenance information,

the EICAS EVENT RCD switch

Answer 12

is pushed.

Up to five events may be recorded by the first five pushes.

Question 13

When a system parameter is exceeded, the system will automatically

Answer 13

record the out of limit parameters and related conditions.

Question 14

The siren cannot be silenced until the condition is corrected,

but the master WARNING light is

Answer 14

extinguished by pushing the master WARNING / CAUTION reset switch.

There are some messages associated with the siren that can be silenced ex. Cabin Altitude

Pilot Response

Question 15

A high-low chime announces a new EICAS

Answer 15

medium-level communication alert.

Question 16

The respective EICAS warning message CONFIG is displayed if

Answer 16

the airplane is on the ground,

with the FUEL CONTROL switches in the RUN position,

and either engine thrust is in takeoff range,

the thrust reversers are not unlocked or deployed,

and the airspeed is less than V1.

For the warning message CONFIG GEAR STEERING airspeed must be less

than 80 kt.

Question 17

Takeoff configuration warnings are annunciated for any of the following configurations:

Answer 17

an entry, forward cargo, or aft cargo door is not latched and locked;

flaps not in the takeoff position;

main gear steering not locked;

parking brake set;

rudder trim not centered;

SPEED BRAKE lever not in DOWN detent;

stabilizer trim not in the green band.

Question 18

he EICAS warning message CONFIG GEAR is displayed if

Answer 18

the airplane is in flight and any landing gear is not down and locked,

with either thrust lever closed and radio altitude less than 800 ft,

or the FLAP lever in the landing position.

Question 19

o prevent potential conflicts between required maneuvers during alerts,

the three warning systems are prioritized as follows:

Answer 19

Windshear, GPWS and TCAS.

Question 20

If a GPWS or PWS warning alert occurs

and TA/RA has been selected

on the transponder,

the RA mode will

Answer 20

automatically be inhibited.

All RA aircraft will now be shown as TA aircraft.

When the GPWS and PWS warning alerts are no longer in effect,

the RA mode inhibit will end.

Question 21

Certain EICAS alert messages are time delayed,

even though

Answer 21

related flight deck panel annunciator lights are illuminated.

Question 22

Automatic display of new TCAS warnings,

EGPWS/GPWS terrain alerts or PWS alerts are

Answer 22

inhibited in the event of an immediate windshear alert.

Question 23

If a new EGPWS / GPWS terrain alert occurs when both NDs

are in MAP, MAP CTR, VOR, or APP mode,

Answer 23

TERR will be automatically selected for both NDs.

Question 24

If a new EGPWS/GPWS terrain alert occurs and only one ND is

in MAP, MAP CTR, VOR, or APP mode,

Answer 24

TERR will be automatically selected for that ND.

Question 25

If a new PWS occurs when both ND's are in MAP, MAP CTR, VOR, or APP mode,

Answer 25

the WXR is automatically selected for both ND's.

Question 26

If a new PWS alert occurs when only one ND is in MAP, MAP CTR, VOR, or APP mode,

Answer 26

the WXR is automatically selected for that ND.

Question 27

While on the ground and with both FUEL CONTROL switches in CUTOFF, the beeper and master CAUTION lights

Answer 27

are inhibited for all EICAS messages.

Question 28

During engine start, all new EICAS caution and advisory messages are inhibited, except those listed here. The inhibit begins when

Answer 28

the engine START/IGNITION selector is moved to START and ends when the engine reaches idle RPM, or the start is aborted, or five minutes elapse.

Question 29

TCAS TA voice alerts for TCAS TAs are inhibited below

Answer 29

500 ft.

Question 30

TCAS CLIMB RAs are inhibited until approximately

Answer 30

1,100 ft AGL (climb) and 900 ft AGL (descent).

Question 31

TCAS DESCEND RAs are inhibited for

Answer 31

T/O until 1,100 ft RA and below 1,100 ft RA during landing.

Question 32

The STATUS cue is inhibited for all EICAS status messages

Answer 32

from engine start to 30 minutes after lift-off.

Question 33

From the time either engine is advanced to takeoff thrust through 400 feet RA or until 20 seconds after rotation,

Answer 33

all EICAS communication messages (except CABIN ALERT and the aural chime) are inhibited.

Question 34

The master CAUTION lights and beeper are inhibited for new EICAS caution messages displayed during the inhibit period,

Answer 34

which begins at 80 kt airspeed and ends at 400 ft Radio Altitude or 20 seconds after lift-off, whichever occurs first.

Question 35

If a rejected takeoff is initiated above 80 kt, the inhibit continues

Answer 35

until the airspeed is less than 75 kt.

Question 36

If the master CAUTION lights illuminate before reaching 80 kt airspeed, they continue to be illuminated when 80 kt airspeed is exceeded

Answer 36

and cannot be extinguished until the inhibit ends.

Question 37

All EICAS advisory messages are inhibited from 80 kt airspeed until 400 ft Radio Altitude or 20 seconds after lift-off, whichever occurs first, or

Answer 37

if takeoff thrust is not selected on both engines.

Question 38

The master WARNING lights and fire bell are inhibited at V1

Answer 38

until one of the following, whichever occurs first; 400 ft Radio Altitude or 25 seconds after V1.

Question 39

If the master WARNING lights illuminate and the fire bell sounds before reaching V1,

Answer 39

they continue to be illuminated and sound when V1 is exceeded.

Question 40

New PWS caution alerts are inhibited from New PWS warning alerts are inhibited from

Answer 40

80 kt airspeed to 400 ft Radio Altitude. 100 kt airspeed to 50 ft Radio Altitude.

Question 41

EICAS takeoff configuration warnings are inhibited

Answer 41

when airspeed exceeds V1.

Question 42

All PWS alerts are inhibited from 1,200 ft Radio Altitude on takeoff

Answer 42

until on approach.

Question 43

All PWS alerts are inhibited from T

Answer 43

2,300 ft Radio Altitude down to 1,200 ft Radio Altitude.

Question 44

All EICAS communication messages, except CABIN ALERT, are inhibited from

Answer 44

800 ft Radio Altitude until 75 kt airspeed on landing.

Question 45

The STATUS cue for all EICAS status messages is inhibited from

Answer 45

800 ft Radio Altitude until 75 kt airspeed on landing.

Question 46

The EICAS alert message WINDSHEAR SYS is inhibited from

Answer 46

400 ft Radio Altitude to 80 kt airspeed on landing.

Question 47

New PWS caution alerts are inhibited below

Answer 47

400 feet Radio Altitude.

Question 48

New PWS warning alerts are inhibited below

Answer 48

50 ft Radio Altitude.

Question 49

When LAND 2 or LAND 3 is displayed on the PFD and the aircraft is at 200 ft Radio Altitude on approach, the master CAUTION lights and beeper are inhibited for all EICAS caution messages, except

Answer 49

AUTOPILOT, AUTOTHROTTLE DISC, NO AUTOLAND and SPEEDBRAKE EXTENDED. The inhibit ends at 75 kt airspeed on landing, or when 40 seconds have elapsed, or at 800 ft Radio Altitude on go-around.

Question 50

Failure of the EGPWS terrain functions will not affect the operation of the basic GPWS functions. If the GPS position is lost,

Answer 50

EGPWS capabilities are also lost.

Question 51

With the terrain function enabled (OVRD not selected), an automatic pop-up display feature provides

Answer 51

automatic display of terrain for both pilots if an alert occurs and neither pilot has the terrain display selected. The display will remain until the following occurs: the threat no longer exists, or the TERR switch is manually deselected.

Question 52

When the terrain display is selected to the ND, terrain is depicted as variable density dot patterns in green, amber, and red. Magenta will be shown in areas of

Answer 52

the world where terrain data is not available.

Question 53

Note that although no antennas are associated with the EGPWS, the terrain display is generated from

Answer 53

the radar display bus. Therefore, a sweep is built into the display.

Question 54

The Ground Proximity Warning System (GPWS) is distinct from the EGPWS previously discussed. Below 2,450 feet the GPWS provides

Answer 54

immediate alerts for potentially hazardous flight conditions involving imminent impact with obstacles and the ground.

Question 55

GPWS immediate alerts are based on

Answer 55

Radio Altitude, Barometric Altitude, ADIRS, glideslope deviation, and airplane configuration.

Question 56

A GPWS caution or warning does not necessarily guarantee obstacle or terrain clearance

Answer 56

as some obstacles or terrain ahead of the airplane may exceed the available climb performance.

Question 57

When the airplane is higher than 2,000 ft above the terrain, obstacles and terrain peaks are displayed

Answer 57

using solid, high density, and low density contours of green.

Question 58

When an OBSTACLE alert occurs while a TERRAIN alert message is displayed, the OBSTACLE alert message

Answer 58

replaces the TERRAIN alert message. Both messages will not be displayed at the same time.

Question 59

When the aircraft is 40 to 60 sec from projected impact with terrain,

Answer 59

the voice annunciation CAUTION TERRAIN, CAUTION TERRAIN sounds.

Question 60

When the aircraft is 20 to 30 sec from projected impact with terrain,

Answer 60

the voice annunciation TERRAIN, TERRAIN, PULL UP, PULL UP sounds.

Question 61

GPWS windshear detection begins at rotation and is enabled

Answer 61

while the aircraft is below 1,500 ft Radio Altitude.

Question 62

In flight with the WXR switch pushed or not pushed, the weather radar begins scanning for windshear below 2,300 ft radio altitude and PWS alerts are enabled below

Answer 62

1,200 ft radio altitude.

Question 63

The advisory message CONFIG WARNING SYS indicates

Answer 63

that a fault has been detected in the configuration warning system. Radio altitude voice callouts and other aural alerts may not be available.

Question 64

The advisory message GND PROX SYS indicates

Answer 64

some or all ground proximity alerts may not be provided. Ground proximity alerts which occur are valid.

Question 65

The advisory message TERR POS indicates position data for the ND terrain map and look-ahead terrain alerts have been lost. Ground proximity alerts which occur

Answer 65

are valid.