Weight On Wheels And Low Speed Awareness Band Check - Garmin G1000 Nxi System Maintenance Manual

4. Press the RA Test softkey again. Verify the RA readout window displays 2500 feet and
decreases to 0 feet on PFD1 and PFD 2.
5. Pull the RADIO ALTM circuit breaker. Verify on PFD 1 and PFD 2 that an RA FAIL
message is displayed.
6. Reset the RADIO ALTM circuit breaker.
7. If no other service is to be performed, continue to the return-to-service checks in Section
9.

Weight on Wheels and Low Speed Awareness Band Check

This procedure will verify that the GDU air ground status uses valid Weight on Wheels (WOW)
inputs.
1. Ensure aircraft is positioned with weight on wheels.
2. Apply external power to the aircraft. Set BATT and AVIONICS MASTER switches to ON
and wait for all aircraft and avionics systems to complete their initialization and begin
operating normally.
3. Verify there are no WOW INVALID or WOW FAULT messages. Refer to Section 5.2 to
troubleshoot messages.
4. Verify the Low Speed Awareness band (red band) is NOT displayed on the PFD1 and
PFD2 airspeed tapes (see Figure 8-1.)
This portion of the check can be accomplished in conjunction with the Landing
Gear Aural Alert and Sirius XM Audio Suppression Test in Section 7.2.4.
5. Place the airplane on jacks (Ref. King Air 300 Series Maintenance Manual Chapter 7-00-
00) with the wheels clear of the ground.
6. Verify there are no WOW INVALID or WOW FAULT messages. Refer to Section 5.4 to
troubleshoot messages.
7. Verify the Low Speed Awareness band (red band) appears at the low end of the Air
Speed Tape on the PFD1 and PFD2 (see Figure 8-1.)
8. Remove airplane from jacks.
9. If no other service is to be performed, continue to the return-to-service checks in Section
9.
G1000 NXi System Maintenance Manual
King Air 300 Series
190-00716-N1
NOTE
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Revision 1