Garmin G5 Installation Manual page 210

6.3.8.7.2 LOC/GS
1. Tune the VHF NAV to the NAV/COM Test Set frequency for LOC/GS operation.
2. On the NAV ramp tester simulate centered LOC and GS needles presentation.
3. If installed with two VHF navigation sources, on the G5 HSI select VOR1, VLOC1, or LOC1 as
the navigation source.
4. Verify the G5 HSI CDI displays centered deviation for both LOC and GS.
5. On the NAV ramp tester simulate one dot left for LOC and one dot down for GS.
6. Verify G5 HSI CDI deviation bar is one dot left and the GS vertical deviation indicates one dot
down.
7. On the NAV ramp tester simulate two dots left for LOC and two dots down for GS.
8. Verify G5 HSI CDI displays two dots left and the GS vertical deviation indicates two dots down.
9. On the NAV ramp tester simulate full scale left for LOC and full scale down for GS.
10. Verify G5 HSI CDI deviation bar is full scale left and the GS vertical deviation indicates full
scale down.
11. On the NAV ramp tester simulate one dot right for LOC and one dot up for GS.
12. Verify G5 HSI CDI deviation bar is one dot right and the GS vertical deviation indicates one dot
up.
13. On the NAV ramp tester simulate two dots right for LOC and two dots up for GS.
14. Verify G5 HSI CDI displays two dots right and the GS vertical deviation indicates two dots up.
15. On the NAV ramp tester simulate full scale right for LOC and full scale up for GS.
16. Verify G5 HSI CDI deviation bar is full scale right and the GS vertical deviation indicates full
scale up.
17. Repeat using VOR2, VLOC2, or LOC2 as the navigation source (if interfaced).
6.3.8.8 GPS Navigation Interface Check
This test is only performed for installations that have an HSI installed and interfaced to a GPS
navigation source. This test must be performed twice if the G5 is interfaced to two GPS navigators.
Conduct this test with the aircraft positioned where it can receive GPS signal.
1. Apply power to the aircraft and aircraft systems and allow the aircraft systems to initialize and the
GPS navigator to acquire sufficient satellites for the GPS solution 3D Diff Nav.
2. If installed with two GPS navigators, on a G5 select GPS1 as the navigation source.
3. Enter a simple flight plan that contains a GPS LPV approach and activate the approach.
4. On the G5 Attitude indicator, verify the following;
•
a lateral deviation indicator is displayed directly above the slip skid indicator and a
deviation pointer magenta in color.
•
A vertical deviation indicator to the right of the aircraft symbol.
5. On the G5 HSI verify the following:
•
A vertical deviation indicator to the right of the rotating compass rose.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual
Page 210
190-01112-10
Rev. 21