Garmin G5 Installation Manual page 52

f. G5 connector not firmly attached to unit.
g. Cabling leading to the G5 not firmly secured to a supporting structure.
h. An engine/propeller combination that is significantly out of balance.
NOTE
In some aircraft, attempting the engine run-up test on a day with very strong and/or gusty winds
may cause the test to occasionally fail. However, windy conditions should not be taken as
evidence that the test would pass in calm conditions; an actual pass is required before the
installation can be considered adequate.
5.3.7.3 CALIBRATION PROCEDURE C: AIR DATA STATIC PRESSURE
CALIBRATION
NOTE
Procedure C is only required if Section 5.3.9 results for the G5 fall outside the tolerances of the
Part 43 Appendix E tests.
The Air Data configuration page has a selection for static pressure calibration. This procedure is used to
perform an altimeter calibration.
The static pressure calibration requires the use of a pressure control system (test set) with an altitude
accuracy of at least ±5 ft. at sea level and ±20 ft. at 30,000 ft. It is necessary to re-calibrate to sea level
(0 ft.), 10,000 ft., 20,000 ft., and optionally to 30,000 ft. The operator is allowed to finish the calibration
at the end of the 20,000 ft. calibration if the aircraft operational ceiling is below 20,000 ft.
CAUTION
To avoid damaging the G5 pressure sensors, both the pitot and static ports must be connected to
the test set.
1. Prior to running the calibration procedure below perform a static system leak check in accordance
with 14 CFR Part 43 Appendix E.
2. Select the Air Data configuration page.
3. Select Calibrate Static Pressure.
4. Ensure all on-screen instructions have been complied with, then press Start.
5. At each calibration point the display will present a screen indicating the pressure altitude to set.
Once the altitude is set, select Ready to calibrate this pressure.
6. During the calibration at each pressure, the pressure must be held constant for 30 seconds for the
calibration step to be successful. The calibration may be cancelled at any point should the test
setup require adjustment before repeating. A progress screen will be displayed showing the status
of the test.
7. Select Done when the static pressure calibration is successfully completed.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual
Page 49 of 53
190-01112-10
Rev. 2