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Displaying the Weather Legend, small, right, Selecting the METARs Text Weather Legend

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SECTION 11 ADDITIONAL FEATURES Weather Legend Page The symbology unique to Graphical METAR, Winds, and Temperature/Dewpoint data is displayed on the Weather Legend Page. The Weather Legend is accessed from the Weather Page. NOTE: All METAR, Wind, and Temp-Dewpoint symbols are depicted at the end of this section. Displaying the Weather Legend: 1) Select the Weather Page and activate the cursor. This selects the weather selection field in the upper left corner of page. 2) Use the small right knob to select METAR, WINDS, or TEMP/DP. 3) Press the MENU Key. The Weather Page Menu is displayed. 4) Turn the small right knob, highlight 'Display Legend', and press the ENT Key. The Weather Legend is displayed (Figure 11-45) for the type of data that was selected. Use the small right knob and scroll through the various descriptions for the symbols that are shown. Press the small right knob to return to the Weather Page. The following symbology is shown for the various types of data: For METAR Data: • Age of Data in Minutes • Ceiling, Visibility, and Precipitation • Ceiling, Visual Flight Rules • Precipitation For Wind Data: • Age of Data in Minutes • Winds • Wind Gust For Temperature/Dewpoint Data: • Age of Data in Minutes • Temperature/Dewpoint Displaying Textual METARs Once received, textual METARs are displayed on the METARs Text Page. Selecting the METARs Text Page: 1) Select the Data Link Page. 2) Select 'Textual Metar'. 3) Press the ENT Key. The Textual METAR Page (Figure 11-46) is displayed for the airport selected. The pilot can enter a different identifier on the Textual METAR Page. Figure 11-45 Weather Legend Page for METAR Data Figure 11-46 Textual METAR Page 11-30 GNC 420(A) Pilot's Guide and Reference 190-00140-20 Rev. K

Section	Page
SECTION 1: INTRODUCTION	9
1.1 Accessories and Packing List	9
1.2 Key and Knob Functions	10
1.3 Takeoff Tour	13
SECTION 2: COM	29
2.1 Communicating Using the GNC 420	29
SECTION 3: NAV PAGES	35
3.1 Main Page Groups	35
3.2 NAV Page Group	36
3.3 Default NAV Page	36
3.4 Map Page	39
3.5 TERRAIN Page	49
3.6 NAV/COM Page	52
3.7 Position Page	54
3.8 Satellite Status Page	57
3.9 Vertical Navigation Page	59
SECTION 4: DIRECT-TO NAVIGATION	63
4.1 Overview	63
SECTION 5: FLIGHT PLANS	69
5.1 Flight Plan Catalog Page	69
5.2 Active Flight Plan Page	76
SECTION 6: PROCEDURES	85
6.1 Approaches, Departures, and Arrivals	85
6.2 Non-Precision Approach Operations	87
6.3 Points to Remember for All Approaches	110
SECTION 7: WPT PAGES	111
7.1 WPT Page Group	111
7.2 Airport Location Page	114
7.3 Airport Runway Page	115
7.4 Airport Frequency Page	116
7.5 Airport Approach Page	118
7.6 Airport Arrival Page	121
7.7 Airport Departure Page	123
7.8 Intersection Page	124
7.9 NDB Page	125
7.10 VOR Page	125
7.11 User Waypoint Page	126
SECTION 8: NRST PAGES	135
8.1 NRST Page Group	135
8.2 Nearest Airport Page	138
8.3 Nearest Intersection Page	140
8.4 Nearest NDB Page	140
8.5 Nearest VOR Page	141
8.6 Nearest User Waypoint Page	141
8.7 Nearest Center (ARTCC) Page	142
8.8 Nearest Flight Service Station (FSS) Page	143
8.9 Nearest Airspace Page	144
SECTION 9: AUX PAGES	149
9.1 AUX Page Group	149
9.2 Flight Planning Page	150
9.3 Utility Page	160
9.4 Setup 1 Page	168
9.5 Setup 2 Page	175
SECTION 10: TERRAIN	181
10.1 Introduction	181
10.2 TERRAIN Page	183
10.3 TERRAIN Alerts	184
10.4 Database Information for TERRAIN	189
SECTION 11: ADDITIONAL FEATURES	191
11.1 Traffic Information Service (TIS)	191
11.2 GTS 8XX Traffic Systems	201
11.3 Weather Data Link Interface	208
SECTION 12: FAULT DETECTION AND EXCLUSION	227
12.1 Detection and Exclusion	227
12.2 Pre-Departure Verification of FDE	228
SECTION 13: MESSAGES, ABBREVIATIONS, AND NAV TERMS	229
13.1 Messages	229
13.2 Abbreviations	236
13.3 Navigation Terms	239
Appendix A: Data Card Use	241
Appendix B: Specifications	243

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GNC 420(A) Pilot’s Guide and Reference

11-30

SECTION 11

ADDITIONAL FEATURES

190-00140-20

Rev. K

Weather Legend Page

The symbology unique to Graphical METAR, Winds,

and Temperature/Dewpoint data is displayed on the

Weather Legend Page.

The Weather Legend is accessed

from the Weather Page.

NOTE:

All METAR, Wind, and Temp-Dewpoint

symbols are depicted at the end of this section.

Displaying the Weather Legend:

Select the Weather Page and activate the

cursor.

This selects the weather selection ﬁeld

in the upper left corner of page.

Use the

small

right knob to select METAR,

WINDS, or TEMP/DP.

Press the

Key.

The Weather Page Menu

is displayed.

Turn the small

right

knob, highlight ‘Display

Legend’, and press the

ENT

Key.

The Weather

Legend is displayed (Figure 11-45) for the

type of data that was selected.

Use the small

right

knob and scroll through the various

descriptions for the symbols that are shown.

Press the small

right

knob to return to the

Weather Page.

Figure 11-45

Weather Legend Page for METAR Data

The following symbology is shown for the various

types of data:

For METAR Data:

•

Age of Data in Minutes

•

Ceiling, Visibility, and Precipitation

•

Ceiling, Visual Flight Rules

•

Precipitation

For Wind Data:

•

Age of Data in Minutes

•

Winds

•

Wind Gust

For Temperature/Dewpoint Data:

•

Age of Data in Minutes

•

Temperature/Dewpoint

Displaying Textual METARs

Once received, textual METARs are displayed on the

METARs Text Page.

Selecting the METARs Text Page:

Select the Data Link Page.

Select ‘Textual Metar’.

Press the

ENT

Key.

The Textual METAR Page

(Figure 11-46) is displayed for the airport

selected.

The pilot can enter a different

identiﬁer on the Textual METAR Page.

Figure 11-46

Textual METAR Page