Figure 1-27 Gi 275 Primary Adi, Reverting Mfd/Standby Adi, Hsi, And Single-Engine Eis - Garmin GI 275 Installation Manual

RS‐232 or
GPS/NAV
ARINC 429 or
Analog
GMU 44B
RS‐232 (GMU 44B)
OR RS‐485 (GMU 44B)
OR
GMU 11
RS‐232 (GMU 11)
Magnetometer
LRU Power
GTP 59
Analog
OAT Probe
[2]
USB
GSB 15
Autopilot HSDB or
Discrete &
[1]
ARINC 429
External Flight
Analog
Director

Figure 1-27 GI 275 Primary ADI, Reverting MFD/Standby ADI, HSI, and Single-Engine EIS

190-02246-10
Rev. 11
GI 275
Base Unit
HSDB [4]
HSI
Backup Battery
(Optional)
Mechanical
HSDB
Backup GPS
Antenna
Internal ADAHRS
[5]
[ADAHRS or ADAHRS + AP units]
GI 275
Primary ADI
[Attitude, Altitude, Airspeed, and Heading]
Backup Battery
(Optional)
GPS #1
HSDB or
RS‐232 & [5]
ARINC 429
HSDB or Analog
NAV #1
or RS‐232 or
ARINC 429
GI 275
Base Unit
EIS #1
HSDB
Coaxial
Internal ADAHRS
[ADAHRS]
GI 275
HSDB
MFD/Standby ADI
[3]
[Attitude, Altitude, Airspeed, and Heading]
Backup Battery
(Required) [8]
GPS #2
HSDB or
[5] RS‐232 &
ARINC 429
HSDB or Analog
NAV #2
or RS‐232 or
ARINC 429
Required and installed per STC
Optional and installed per STC
Not installed per STC
RS‐232 (GEA 24)
OR
RS‐485 (GEA 110)
Mechanical
Reversionary
Switch
[3]
ARINC 429
Discrete
RS‐232
HSDB
[1]....GI 275 ADAHRS+AP required to drive the autopilot
if equipped.
[2]....GTP 59 interface is optional but recommended. If
the system includes a GI 275 ADI(s), the GTP 59
MUST ONLY be connected to the GI 275 ADI(s). For
standalone GI 275 EIS installations, connect the
GTP 59 to the GEA 24/110. If connected to EIS
adapter in twin‐engine aircraft, only connect to
one, not both.
[3]....HSI/Standby limited to Class I‐II aircraft.
Reversionary switch required when Standby ADI is
an HSI. See section 3 for restrictions.
[4]....If HSDB ports are available, this connection is
optional as an HSDB failure redundancy.
[5]....GPS source is required. Either backup antenna or
external GPS source.
[6]....Must be retained.
[7]....Required connection for aiding AHRS.
[8]....A backup battery is required for Standby GI 275
units that do not utilize an electrical power source
that is independent from the aircraft's primary
electrical power source.
GI 275 Part 23 AML STC Installation Manual
GEA 24/110
Engine Inputs
[2]
Pitot/Static
Plumbing
[7]
Radar
Altimeter
Stormscope
Weather
Standby
Instrument
Magnetic
Compass
[6]
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