Figure 1-26 Gi 275 Primary Adi, Reverting Mfd/Standby Adi, And Hsi - Garmin GI 275 Installation Manual

GMU 44B
RS‐232 (GMU 44B)
RS‐485 (GMU 44B)
OR
OR
GMU 11
RS‐232 (GMU 11)
Magnetometer
LRU Power
GTP 59
Analog
OAT Probe
[2]
USB
GSB 15
Autopilot
[1]
External Flight
Director
GPS #1
[5]
NAV #1
190-02246-10
Rev. 11
Backup GPS
Antenna
Internal ADAHRS
[ADAHRS or ADAHRS + AP units]
GI 275
Primary ADI
[Attitude, Altitude, Airspeed, and Heading]
Backup Battery
(Optional)
HSDB or
Discrete &
ARINC 429
Analog
HSDB or
RS‐232 &
Altimeter
ARINC 429
HSDB or Analog or
RS‐232 or ARINC 429

Figure 1-26 GI 275 Primary ADI, Reverting MFD/Standby ADI, and HSI

Coaxial
[5]
Internal ADAHRS
[ADAHRS]
GI 275
HSDB
MFD/Standby ADI
[3]
[Attitude, Altitude, Airspeed, and Heading]
Backup Battery
(Required) [8]
GPS #2
HSDB or
RS‐232
RS‐232 &
[5]
ARINC 429
HSDB or Analog
HSDB or
NAV #2
or RS‐232 or
ARINC 429
ARINC 429
[1]....GI 275 ADAHRS+AP required to drive the autopilot
Radar
ARINC 429
if equipped.
[2]....Optional but recommended.
[3]....MFD pages limited to Class I‐II aircraft.
Reversionary switch required when Standby ADI
has MFD pages. See section 3 for restrictions.
[4]....If HSDB ports are available, this connection is
Required and installed per STC
optional as an HSDB failure redundancy.
[5]....GPS source is required. Either backup antenna or
external GPS source.
Optional and installed per STC
[6]....Must be retained.
[7]....Required connection for aiding AHRS.
[8]....A backup battery is required for Standby GI 275 u
Not installed per STC
nits that do not utilize an electrical power source
that is independent from the aircraft's primary
electrical power source.
Mechanical
Reversionary
Switch
[3]
GI 275
Base Unit
HSDB
HSI
Backup Battery
(Optional)
HSDB [4]
Stormscope
Traffic
Instrument
GI 275 Part 23 AML STC Installation Manual
Pitot/Static
Plumbing
[7]
Standby
Magnetic
Compass
[6]
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