Warning Systems

Question 1

Which switch is used to inhibit the “TOO LOW FLAPS” GPWS alert?

Answer 1

The FLAP INHIBIT switch

Question 2

When are radio altimeter callouts provided on approach?

Answer 2

“FIVE HUNDRED”
-descending below 500’ RA if:
—a non ILS/GLS is used, or
—valid loc freq used and
—-not within +/- 2 dots loc or gs
—-backcourse detected

“MINIMUMS, MINIMUMS”
-at DA/MDA
-based radio alt when MINS selector set to RADIO
-based on barometric alt when MINS selector set to BARO
-based on captains minimums selector

Question 3

How is an actual wind shear encounter annunciated to the flight crew by the GPWS system?

Answer 3

WINDSHEAR warning (red) on the attitude indicators and

aural voice alerts.
-two tone siren followed by “WINDSHEAR WINDSHEAR WINDSHEAR”

*alerting active
-takeoff rotation to 1500 AGL
-approach 1500-10’ AGL
-missed approach to 1500 AGL

Question 4

What does a red terrain elevation on the terrain elevation display indicate?

Answer 4

Dotted Red: terrain >2000’ above aircraft

Dotted Amber: 500’ (250’ gear down) below to 2000’ above

Dotted Green: 2000’ below to 500’ (250’ gear down) below

Dotted Magenta: no terrain data available

Solid Red or Amber: look ahead caution or warning active

Black:no significant terrain or obstacle

*when all terrain is >2000’ below, only highest peaks shown.

*elevation display notes highest and lowest terrain altitude and numbers are color coded to match logic above

Question 5

Is radar turbulence detection capable of detecting clear air turbulence?

Answer 5

No

Requires the presence of at least light precip to measure precip velocities

Question 6

What does pushing WX+T on the radar control panel provide?

Answer 6

Weather Plus Threats

Turbulence is displayed out to 40 nm for all selected ranges.

Must be in AUTO mode to display core, path threat assessment, and level 2 turbulence and predictive over flight protection

Question 7

WX+T only provides turbulence within how much range?

Answer 7

40 nm for all selected ranges

Question 8

How is radar scanning activated?

Answer 8

When either (or both) WXR switch(s) selected on the EFIS control panel
-power applied to the weather transmitter
-displays radar returns on respective ND

*if in TEST
-power applied to radar transmitter for less than 1 sec, then muted

Question 9

How is the Predictive Windshear System activated?

Answer 9

Selecting WXR on the EFIS control panel
-radar sweeps alternate between windshear and WX returns

Advancing either thrust lever beyond 53 degrees
-all radar antenna sweeps are for windshear
-alerting not available for approx 12 sec

Question 10

Does the weather radar provide alerting for all types of windshear?

Answer 10

No

The weather radar detects microbursts and other windshears with similar characteristics. Does not provide alerting for all types of windshear.

Question 11

How far does the predictive windshear area extend?

Answer 11

3 nm

Caution:
-outside warning range, and
- within 30 degrees heading (SH wrong)
- >.5 nm and <3nm ahead

• takeoff/approach, cautions inhibited above 80 kts and below 400’ AGL

Warning:
-takeoff: <.25 nm either side of aircraft heading and >.5 nm and <3 nm ahead
-landing: same but >.5 nm and <1.5 nm ahead

-takeoff/approach warnings inhibited above 100kts and less than 50 ft RA, don’t remove existing PWS alerts

-turned on below 2300’ RA
-Below 2300’ RA, radar sweeps reduce from 180 degrees to 120 degrees with PWS enabled
-alerting enabled below 1200’ RA

-Warnings
—WINSHEAR AHEAD
—GO AROUND, WINDSHEAR AHEAD
—ND and Attitude indicator
-Caution
—MONITOR RADAR DISPLAY
—ND only

Question 12

When is predictive windshear alerting available on the ground after the radar starts scanning?

Answer 12

12 seconds

Activated by thrust levers advanced beyond 53 degrees or WXR switch on EFIS control panel

Question 13

What does an aural “MONITOR RADAR DISPLAY” alert indicate?

Answer 13

A PWS Caution
-WINDSHEAR (amber) message on ND
-windshear (red) symbol on ND, and
-aural “monitor radar display”
-outside the warning region (not directly ahead of aircraft

• PWS available on expanded MAP, center MAP, expanded VOR, expanded APP only

Question 14

When is the Runway Awareness Advisory System (RAAS) enabled?

Answer 14

Automatically. During taxi and on approach

Function of the EGPWS

Taxi alerts:
-aural and visual message
-depends on ground speed with respect to runway edge
-inhibited above 40 kts
-above 40kts, “on taxiway, on taxiway” alert

Approach: ex APP 16L
-visual message only
- 300-750 AFE within 3 nm of runway and 200’ of Rwy centerline

Alerts:
Approaching runway, taxi
On runway, air or ground
Distance remaining on landing and RTO
Takeoff flap
Taxiway takeoff
Extended runway hold after 3 min
Insufficient runway length, T/O, <4500’
Altimeter monitor, transition altitude

Question 15

What are the TCAS traffic advisory symbols?

Answer 15

Red solid square: RA (resolution advisory)

Amber solid circle: TA (traffic advisory)

White solid diamond: proximate traffic

White hollow diamond: other traffic

Question 16

When will the TCAS system issue the aural advisory “CLEAR OF CONFLICT”? “MONITOR VERTICAL SPEED”?

Answer 16

Clear of conflict:
-RA encounter terminated
-maneuver guidance no longer displayed

Monitor vertical speed:
-for RA
-preset pitch is outside the RA pitch command area. Keep pitch attitude away from red area

Question 17

What are the indications of a Resolution Advisory on the PFD?

Answer 17

Traffic Alert and Collision Avoidance System Pitch Command (red)
-red U shaped lines up and down on attitude indicator
-inside of U shaped lines are threat area. Avoid
-airplane symbol must remain outside TCAS pitch command areas to avoid conflict
-Aural alert with guidance (“climb, climb”, etc)

Inhibited
-“increase descent” below 1500’ RA
-descend RAs below 1100’ RA
-RAs below 1000’. TA only
-all voice annunciations below 500’ RA
-by GPWS and windshear warnings