Taws Functional Test - Garmin CIRRUS PERSPECTIVE SR20 Line Maintenance Manual

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7.3.8 TAWS Functional Test (if unlocked)
1. Select the TAWS page from the MAP group on the MFD.
2. Verify that the title at the top of the page reads "MAP – TAWS‐B". If TAWS has not been
enabled, the title will read "MAP – TERRAIN PROXIMITY" or "MAP – TERRAIN".
3. Press the MENU button and select "Test TAWS" from the pop‐up menu (Figure 7‐5).
4. After the TAWS test is completed, verify that "TAWS System Test OK" is heard over the
cockpit speaker.
5. Press the MENU button again and select "Inhibit TAWS" from the pop‐up menu and
press ENT. Verify "TAWS INHB " is displayed in the lower right hand corner of the PFD.
6. Press the MENU button again and select "Enable TAWS" from the prop‐up menu and
press ENT. Verify the "TAWS INHB" annunciation on the PFD is removed.
7. With a GPS position acquired, shield or disconnect the GPS antennas to remove the GPS
signal. Verify "DR" shows on the MFD and the "TAWS N/A" annunciation shows on both
the MFD and PFD.
8. Reconnect or remove the shield from the GPS antennas, verify the MFD indications and
PFD annunciation are removed and verify that "TAWS Available" is heard over the
cockpit speaker after about 10 seconds from the moment a 3D GPS solution is re‐
acquired.
Cirrus Perspective™ Line Maintenance Manual
190-00920-00
Figure 7‐5. TAWS Display
Page 7-21
Rev. E