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Part Two: Section 2

XM Weather

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.

TFR Information

Areas with TFRs (Temporary Flight Restrictions)

are shown outlined in yellow on the NAV main page

of the 500W-series and on the Map and XM Weather

page of both the 400W and 500W-series. More

information about Temporary Flight Restrictions can

be seen on the TFR Information page, which can be

accessed from the Map page or the XM Weather page.

1a. With the Map page (the second page of the

NAV page group) displayed, press the small

right knob to bring up the map pointer.

1b. With the XM Weather page (the third page

of the NAV page group) displayed, press the

MENU key to bring up the Page Menu. Then,

turn the large right knob to highlight "Show

Map Pointer" and press ENT to bring up the

map pointer.

Turn the large and small right knobs to move

the map pointer to the yellow boundary of a

TFR region. When the map pointer is within

the TFR region, its boundary will be highlighted

with a wider yellow line.

190-00356-30 Rev C