Garmin GI 275 Installation Manual page 25

1 GI 275 DESCRIPTION
1.1 STC Applicability .............................................................................................................................1-2
1.2 System Overview ..............................................................................................................................1-3
1.2.1 Hardware Variants......................................................................................................................1-6
1.2.2 Functions ....................................................................................................................................1-7
1.3 Equipment.......................................................................................................................................1-20
1.3.1 Display Sensors ........................................................................................................................1-20
1.3.2 Engine Sensors .........................................................................................................................1-22
1.3.3 Other Equipment ......................................................................................................................1-25
1.4 System Architecture Examples.......................................................................................................1-26
This installation manual is intended for use by those authorized to perform maintenance and/or avionics
installations on approved aircraft. It includes installation data and checkout procedures for the GI 275
Multi-Function Instrument and refers to standards described in Title 14 CFR Part 43. Installation personnel
must be familiar with the contents of this manual prior to performing modifications to the aircraft.
Terms frequently used in this manual include:
•
GI 275: Unless otherwise specified, refers equally to all variants of the GI 275
•
References made to HSDB and Ethernet are used interchangeably.
•
Standalone EIS: GI 275 EIS with no HSDB network connection to a GI 275 ADI.
•
Metal aircraft: Aircraft with an aluminum (metallic) airframe, including exterior skin
•
Non-metal aircraft: Aircraft with an airframe constructed from wood or composite, including
exterior skin, or aircraft with metal tubular truss airframe and fabric or composite exterior skin
•
Primary EGT: Is the exhaust gas temperature that is displayed independently from the exhaust gas
temperature associated with each cylinder. This is typically a probe installed downstream in the
exhaust to detect temperature from multiple cylinders and is used for EGT limitations in some
aircraft
•
X: An "X" denotes variations of LRUs. Examples include:
◦ "GTN 6XX" refers to the GTN 625/635/650"GTX 33X" refers to the GTX 33/33D/330/
330D/335
•
( ): Parenthesis denote an undetermined value. Examples include:
◦ "GI ( )" refers to GI 1, GI 2, etc. depending on the context
◦ "AHRS ( )" refers to AHRS 1, AHRS 2, or AHRS 3 depending on the context
•
Throughout this manual references will be made to aircraft class. With regards to usage in this
manual, the classes are defined as follows:
◦ Class I: Single reciprocating engine airplane with GTOW of 6,000 lbs or less
◦ Class II: Multi reciprocating engine or turbine engine airplane with GTOW of 6,000 lbs or
less
◦ Class III: Airplane with GTOW of more than 6,000 lbs
◦ Class IV: Commuter category aircraft
Refer to AC 23.1309-1E for more information on airplane classes
•
"Standby ADI" refers to any GI 275 configured as a Standby per Section 5.3.4 (i.g., MFD/Standby
ADI and HSI/Standby ADI) or a GI 275 configured as a secondary ADI for another system per
Section 3.2.2.
190-02246-10
Rev. 11
GI 275 Part 23 AML STC Installation Manual
Page 1-1