Garmin G5 Installation Manual page 203

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.
8. Exit configuration mode.
6.3.7.4 CALIBRATION PROCEDURE D: GMU 11 Magnetometer Calibration
NOTE
All selections made in configuration mode in this section are made on the G5 ID strapped as #1.
Refer to APPENDIX A for details on ID strapping.
CAUTION
This magnetometer calibration procedure should be carried out on a compass rose to guarantee
measurements free of environmental magnetic disturbances. If a compass rose is not available a
sight compass can be used. Attempting to carry out this procedure on a typical ramp area may
not yield a successful calibration. The accuracy of the heading display on the G5 cannot be
guaranteed if this calibration is not performed on a magnetically clean and level surface.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual
Page 203
190-01112-10
Rev. 21