Garmin GNC 420W Pilot's Manual Addendum - Page 21

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To view any airport's Textual METAR page:

If not viewing the WPT page group, press CLR

and turn the large right knob to select the

WPT page group.

Turn the small right knob until the Textual

METAR page appears.

To select another airport, press the small right

(CRSR) knob to highlight the airport ID (in the

"APT" ﬁeld).

Turn the small and large right knobs to edit

the airport identiﬁer for the desired airport.

Then, press ENT to conﬁrm the airport name.

Press the small right (CRSR) knob again to

remove the cursor (that is, to stop highlighting

the APT ﬁeld).

Textual METAR/TAF Code

The current airport weather reports on the Textual

METAR page (and the airport weather forecasts on the

TAF page, too) use a rather cryptic format originally

devised for teleprinters. You can ﬁnd information

about this format in an FAA publication, Aviation

Weather Formats: METAR/TAF, which can be down-

loaded from the FAA Web site.

You may see the following codes, which differ

slightly from the codes described in the FAA publica-

tion referenced above, at the start of a METAR on the

Textual METAR page:

• SA = METAR — a standard hourly METAR

report.

• SP = SPECI — a Special Report inserted

between regular hourly METARs to provide

late-breaking weather news.

TAF Page

When a GDL 69/69A is installed, the TAF (Termi-

nal Aerodrome Forecast) page is inserted into the WPT

page group, immediately after the Textual METAR

page.

This page shows a text message giving a weather

forecast for a particular airport. The format is similar

to that used for METARS, but describes a weather

forecast rather than current weather at the particular

airport.

Part Two: Section 2

XM Weather