Garmin GTN 625 Pilot's Manual page 319

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Inhibiting/Enabling TAWS-B PDA/FLTA Alerting

TAWS also has an inhibit mode that deactivates the PDA/FLTA aural and

visual alerts. Pilots should use discretion when inhibiting TAWS and always

remember to enable the system when appropriate. Only the PDA and FLTA

alerts are disabled in the inhibit mode. After cycling power, TAWS will no longer

be inhibited.

TAWS Inhibited

Annunciation

Figure 10-21 TAWS-B Alerting Disabled (TAWS Inhibited) Annunciation

1. While viewing the Terrain page, touch the Menu key.

2. Touch the TAWS Inhibit key to inhibit or enable TAWS (choice

dependent on current state). A green bar in the key indicates

the TAWS is inhibited.

Negative Climb Rate After Take-Off Alert (NCR)

The Negative Climb Rate (NCR) After Take-Off alert (also referred to as

"Altitude Loss After Take-Off") provides alerts when the system determines the

aircraft is losing altitude (closing upon terrain) after takeoff. The aural message

"Don't Sink" is given for NCR alerts, accompanied by an annunciation and a

pop-up terrain alert on the display. NCR alerting is only active when departing

from an airport and when the following conditions are met:

• Height above the terrain is less than 700 feet

• Distance from the departure airport is 2 NM or less

• Heading change from the departure heading is less than 110º

The NCR alerting parameters as defined by TSO-C151c are shown below.

190-01004-03 Rev. P

GTN 625/635/650 Pilot's Guide

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