Mooney M20M, Pilot Operating Handbook

Page: 293 / 377

GI 275 Part 23 AML STC
190-02446-12 Rev. 4
Airplane Flight Manual Supplement Page 53 of 70
If pilot-selected navigation angle settings differ on the navigator and the GI 275,
the display aspects will be inaccurate.
System Data Logging
The GI 275 system incorporates a data logging feature that can record
parameters related to the aircraft’s primary flight instruments, engine
indications, and aircraft configuration. Recorded data is stored in internal
memory and can be exported via a USB drive.
Primary ADI
ADI functions are selected by touching the desired adjustable field on the
display. Once selected, the inner knob changes the value (Altitude, IAS, Baro, or
Heading). An inner knob press will sync the altitude, IAS, or heading to the
current value. Baro sync toggles the ADI in and out of standard altimeter setting
(29.92”hg and labeled “STD”). The selectable field defaults to Baro when the
knob is idle for a period of time. The default timeout is 10 seconds and may be
changed in the Menu.
When interfaced to a Garmin G500/600 TXi, the GI 275 will sync barometer (if
Baro Sync is enabled), selected heading, selected altitude, and selected airspeed
bugs with the TXi. It is required that BARO SYNC be enabled when using
VNAV functionality as the GTN will only use the pilot-side BARO unless there
is a failure.
7.14.1 Primary Flight Data
The ADI can display the following parameters depending on the unit
configuration; attitude, heading, airspeed, barometric altitude, and vertical speed
data. Airspeed and altitude displays include a six second trend indicator.
Pilot selectable bugs may be configured for airspeed, altitude, and heading.
The GI 275 requires at least one GPS source to ensure the integrity of the
AHRS.
When dual GI 275 -10, -20, -30, and -40 variants are installed and configured,
the pilot is provided with AHRS/ADC source selection controls via the ADI
Menu → Options → Sensors menu.
The default ADC and AHRS source on power up is ADC 1 and AHRS 1 for the
pilot side ADI and ADC 2 and AHRS 2 for the co-pilot or standby ADI and if a
third sensor is installed, it is configured as the standby.
Selection of the non-default sensor source will cause a “ADC [Sensor Number]”
or “AHRS [Sensor Number]”, respectively, to be displayed with black text on a
white background. If there is an AHRS or ADC miscompare or no-compare
while on the off-side sensor “ADC [Sensor Number]” or “AHRS [Sensor
Number]” will be displayed with black text on a yellow background.