Section 11 GI 260 (AOA Indicator) Installation. Garmin G3X Touch for Experimental Aircraft, GDU 465, GDU 455, G3X, GDU 460, GDU 450

11.3 General Specifications

See

Section 2.2

for power/current specifications, and Section 2.4.1

for dimension/weight specifications.

11.4 Unit Installation

Fabrication of a wiring harness is required. Sound mechanical and electrical methods and practices are

recommended for installation of the GI 260. Refer to Section 2.3

for wiring considerations, and to

Section 26.6

for pinouts.

1. Select a mounting location where the GI 260 is easily visible, but does not impede the pilot’s field of view, typically the glareshield.

2. If needed, make a hole in the glareshield to run the pigtail harness through.

3. Secure the Socket Mount to a suitable mounting location (glareshield) using (3) #6-32 100º flat head screws.

4. Insert the GI 260 into the Socket Mount, adjust for best viewing angle.

5. Make connections (

Figure 27-1.6

) to the pigtail harness by either splicing wires or adding a D-sub connector to the end of the pigtail (after it has run through glareshield or mounting surface) and connect to another D-sub connector on harness.

6. Shields should be continued through any splices by grounding your shield to the spare shield ground drain wires.

7. If applicable, assemble the connector backshells and connect backshell connectors.

11.5 Unit Calibration

An in-flight AOA calibration is required for GI 260 installations, see

Section 34.4.6.1

and Section 34.4.6.2

(for GDU 37X installations) or Section 35.4.9.1

and Section 35.4.9.2

(for GDU 4XX installations).

11.6 Unit Operation

See Figure 11-2 for AOA display descriptions.

The GI 260 has two buttons below the display labeled as TEST and MUTE. When the TEST button is pressed, the GI 260 performs a self test. During the self test, all indicators on the display will be illuminated to signal that the unit passes the test. The red chevrons on the display will flash on and off to indicate a failure. Releasing the TEST button restores normal operation.

Pressing the MUTE button mutes any currently playing audio. The audio will then remain muted until any

Stall Warning (red) or Caution Alert (yellow) conditions have returned to a Minimum Visible (green) condition. The mute operation is then reset, and audio is unmuted.

Stall Warning

AOA

190-01115-01

Rev. AN

Approach

Target AOA

Caution Alert

AOA

Minimum

Visible AOA

Figure 11-2 GI 260 Display

G3X/G3X Touch Installation Manual - GI 260 Installation

Page 11-2