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Page 7-6 LMM for the Kodiak 100

190-02102-00 Rev.4

7. Select PA and verify the PA select annunciator is illuminated. Make sure the

COM1 active frequency is displayed white.

8. Initiate passenger address using pilot's headset boom mic by keying the pilot's

PTT. Check the following:

• Clear PA audio can be heard over cabin speaker and CABIN ICS headsets.

• PA selected annunciator on the GMA flashes ~ once per second during PA

address.

9. Repeat Step 8 using pilot hand mic.

10. Initiate passenger address using copilot's headset boom mic by keying the

copilot's PTT. Check the following:

• Clear PA audio can be heard over cabin speaker and CABIN ICS headsets.

• PA selected annunciator on the GMA flashes ~ once per second during PA

address.

11. Repeat Step 10 using copilot hand mic.

7.3.2 Transceiver Operational Check

Perform a ramp test radio check by exercising the installed transceivers, microphone,

microphone key and audio over the headphones and speaker. Make sure that

communications are clear and PTT operation is correct for each pilot position.

NOTE

Adjust pilot or co-pilot mic gains in the Fast Volume Configuration page in

the event that COM sidetone is lower than desired.

1. Select the audio source corresponding to each installed avionics unit (i.e. NAV1,

NAV2, COM1, COM2, ADF and DME) and check for audio over the headsets.

2. Press the SPKR button and make sure the selected audio is heard over the

speaker.

7.3.3 Failsafe Operation Check

1. Remove power to the GMA 1347/1360D. This directs all COM1 phone audio,

MIC audio and MIC key to the pilot position.

2. Check the failsafe operation by exercising the COM1 microphone, microphone

key and audio over the headphones. All volume control for the COM audio should

be through the PFD/MFD volume control. Check for proper operation of COM1

using the failsafe operation.

3. Restore power to the GMA 1347/1360D to continue testing.

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Garmin G1000 Line Maintenance Manual

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