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Part Three: Section 2

TAWS Operation

General Database Information

Garmin TAWS uses terrain and obstacle informa-

tion supplied by government sources. The data under-

goes veriﬁcation by Garmin to conﬁrm accuracy of

the content, per TSO-C151b. However, the displayed

information should never be understood as being

all-inclusive. Pilots must familiarize themselves

with the appropriate charts for safe ﬂight.

NOTE: The data contained in the terrain and obstacle

databases comes from government agencies. Garmin accu-

rately processes and cross-validates the data, but cannot

guarantee the accuracy and completeness of the data.

The terrain/obstacle databases are contained on a

datacard which is inserted in the right-most slot of the

400W/500W Series units.

The version and area of coverage of each ter-

rain/obstacle database is shown on the Terrain Data-

base Versions Page, located in the AUX Page Group.

Databases are checked for integrity at power-up. If a

database is found to be missing and/or deﬁcient, the

TAWS system fails the self-test and displays the TAWS

system failure message.

Terrain Database Information

Terrain/obstacle databases are updated periodi-

cally with the latest terrain and obstacle data. Visit the

Garmin website to check for newer versions of terrain/

obstacle databases. Compare database cycle numbers

to determine if a newer version is available.

The database update process includes either

reprogramming or replacing the database card and

inserting the updated card in the right card slot on the

unit front panel. The terrain/obstacle database may

be downloaded via the intenet and the card repro-

grammed using a USB programmer available from

Garmin. Contact Garmin at 800-800-1020 or at