Warning Systems

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The Terrain Display color and density vary based on the terrain height versus aircraft altitude: - dotted green: terrain from 2000 ft below to 500 ft (250 ft with gear down) below the aircraft's current altitude - dotted amber: terrain 500 ft (250 ft with gear down) below to 2000 ft above the aircraft's current altitude - dotted red: terrain more than 2000 ft above aircraft's current altitude - dotted magenta: no terrain data available - solid amber: look-ahead terrain caution active - solid red: look-ahead terrain warning active - black: no significant terrain/obstacle

Explain the Terrain Display colors:

40 / 25

A TCAS Traffic Advisory (TA) is generated when the other aircraft is approximately ____ seconds from the point of closest approach. If the other aircraft continues to close, a Resolution Advisory (RA) is generated when the other aircraft is approximately ____ seconds

rotation / 1500 ft RA

GPWS Windshear detection begins at ________ and is enabled below _________.

Weather Radar operation is verified by the display of Weather Radar (cyan) information in the lower left quadrant of the ND. Pressing the WXR switch when the Weather Radar is in operation will remove the Radar Display from the respective ND. When both WXR switches have been selected off, the Weather Radar Transmitter power will be removed.

How can you tell if the wx radar is powered?

Flight Handbook definition of severe windshear: airspeed change greater than 15 knots or vertical speed changes greater than 500 fpm. See 15.20.15 Non-normal maneuvers section definition of windshear adds 5 degrees pitch attitude change, 1 dot displacement from glideslope, unusual thrust lever position for a significant period of time.

How do you define severe windshear?

It indicates a test fault.

If you press the wx radar TEST switch and see a flashing (cyan) zero appearing in the upper right corner of the Navigation Display, what does it mean?

2,300 / when the aircraft lands

PWS is automatically turned off when the aircraft climbs above _______' RA, and in the descent ________________________.

12

Predictive windshear alerting is not available until approximately ____ seconds after the weather radar begins scanning for windshear.

1200

The PWS function is automatically activated and PWS alerting is enabled below ______ ft RA.

IDNT

The ______ switch, when pushed, suppresses radar ground returns in the WX and WX+T modes.

- there is a GPWS Computer malfunction or power loss - the GPWS Computer cannot calculate windshear conditions - invalid inputs are being received

The amber GPWS INOP light illuminates when:

inside the red lines

The area(s) ____________________ indicate(s) the pitch region(s) to avoid in order to resolve the TCAS traffic conflict.

320

The maximum range of the wx radar is _____ NM.

40

The weather radar turbulence display extends out to ____ nm.

The Traffic Advisory (TA) symbol appears as an amber dot; a Resolution Advisory (RA) symbol appears as a red box. A Traffic Advisory (TA) is generated when the other aircraft is approximately 40 seconds from the point of closest approach. If the other aircraft continues to close, a Resolution Advisory (RA) is generated when the other aircraft is approximately 25 seconds from the point of closest approach. The RA provides aural warning and guidance as well as maneuver guidance to maintain or increase separation from the traffic. 15.010.36

What are TCAS Traffic Advisory (TA) symbols? Resolution Advisory (RA) symbols?

RAAS Control Database (RCD) and Terrain Database (TDB)

What do the RCB and TDB on the ND indicate?

This is a Path Attenuation and Compensation alert (PAC) alert, indicating an area on the display that may display a radar shadow. NOTE: To verify the existence of a radar shadow, push and momentarily hold the Ground Clutter (GC) Switch.

What does an amber bar displayed on the outermost range arc directly behind a wx radar target indicate?

It inhibits the Look Ahead Terrain alerts and the Terrain Display. TERR INHIBIT (amber) is displayed on both Navigation Displays.

What does placing the TERR INHIBIT switch to TERR INHIBIT do?

It allows the Captain or First Officer to select all of the control settings from the opposite side, with the exception of range.

What does pushing the TFR switch on the wx radar control panel do?

When pushed and held, it deactivates Ground Clutter Suppression, allowing both ground returns and weather to be displayed.

What does the Ground Clutter Suppression (GC) Switch on the Radar Control Panel do?

The GPWS provides the aural alert BANK ANGLE, BANK ANGLE when roll angle exceeds 35°, 40°, and 45°. Once sounded, the alert is silent for that bank angle (35°, 40°, or 45°) until the system is reset by decreasing bank angle to 30° or less. 15.010.9

When does the GPWS provide the aural alert BANK ANGLE, BANK ANGLE?

From 2700 ft below to 7000 ft above the aircraft.

With the TCAS set to ABV (above), what will be it's vertical display dimensions?


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