System Maintenance Manual

G1000/GFC700 System Maintenance Manual – C90A/C90GT/C90GTi King Air Page 7-53
190-00682-01 Revision G
7.22 Weight on Wheels and Low Speed Awareness Band Test
This check is accomplished to verify the integrity of the wiring interface between the right landing gear
safety switch assembly and the No. 1 and No. 2 GIA inputs (Discrete IN* 2A).
1. Ensure aircraft is positioned with weight on wheels.
2. Apply external power to the aircraft. Set BAT and AVIONICS MASTER switches to ON and
wait for all aircraft and avionics systems to complete their initialization and begin operating
normally.
3. Check that the airspeed fields are valid within 2 minutes of power up on both PFD1 and PFD2.
4. Verify the Low Speed Awareness Band is NOT displayed in the airspeed field on PFD1 and
PFD2 airspeed tapes (See Figure 7-9).
NOTE
This portion of the check can be accomplished in conjunction with the Landing Gear Aural Alert and XM
Audio Suppression Test in Section 7.2.2.
5. Place the airplane on jacks (Ref. Maintenance Manual Chapter 7-00-00) with the wheels clear of
the ground.
6. Verify the Low Speed Awareness Band (red band) at the low end of the airspeed tape on PFD1
and PFD2 (See Figure 7-9).
7. Remove airplane from jacks.
If no other service is to be performed, continue to the return-to-service checks in Section 8.
Figure 7-9. Low Speed Awareness Band Symbolization