Pilot's Guide

190-00663-03 Rev. A
Garmin G1000 Pilot’s Guide for the Beechcraft C90A/GT/GTi
377
HAZARD AVOIDANCE
PDA and FLTA visual annunciations and voice alerts can be manually inhibited. Discretion should be used
when inhibiting TAWS-B and the system should be enabled when appropriate. When TAWS-B is inhibited,
the alert annunciation ‘TAWS INH’ is shown on the PFD and MFD (Figure 6-91).
Figure 6-91 TAWS-B Alerting Disabled
(TAWS-B Inhibited) Annunciation
Inhibiting/enabling TAWS-B alerting:
1) Select the TAWS-B Page.
2) Select the INHIBIT Softkey to inhibit or enable TAWS-B (choice dependent on current state).
Or:
a) Press the MENU Key.
b) Select ‘Inhibit TAWS’ or ‘Enable TAWS’ (choice dependent on current state) and press the ENT Key.
While TAWS-B alerting is inhibited, is unavailable, or has failed, the system may show a ‘LOW ALT’
annunciation on the PFDs if all of these conditions are met:
• The aircraft is on a GPS SBAS approach.
• The Final Approach Fix (FAF) is the active waypoint.
• The aircraft altitude is at least 164 feet below the prescribed FAF altitude.
Refer to the Flight Instruments for more information about the ‘LOW ALT’ annunciation.
ALTITUDE VOICE CALLOUT (VCO) ALERT
The system provides a “Five-hundred” voice alert when the aircraft descends to within 500 feet above the
terrain or runway threshold. When the aircraft is within 5 nm of an airport, the “Five Hundred” voice alert is
based on the nearest runway threshold elevation. When the aircraft is more than 5 nm of the nearest airport,
the “Five Hundred” voice alert is based on the height above terrain, by comparing the aircraft’s GPS-GSL
altitude to the terrain database.
There are no display annunciations or pop-up alerts that accompany the VCO alert. This alert cannot be
inhibited.
NEGATIVE CLIMB RATE AFTER TAKEOFF ALERT (NCR)
The Negative Climb Rate (NCR) After Takeoff alert (also referred to as “Altitude Loss After Takeoff”)
provides alerts when the system determines the aircraft is losing altitude (closing upon terrain) after takeoff.
The voice alert “Don’t Sink” is given for NCR alerts, accompanied by visual annunciations. 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 5 nm or less
• Heading change from the departure heading is less than 110 degrees
NCR alerts can be triggered by either altitude loss (Figure 6-92) or sink rate (6-93).