Page 3-14
G1000/GFC 700 Post Installation Checkout Procedure - Hawker / Beechcraft King Air C90
Revision 5
190-00682-00
3.5
GMA 1347D Testing
Perform the following checks in the aircraft with known good hand microphone and headset.
3.5.1
Intercom System (ICS) Check
1. Ensure that the
MAN SQ
key is off (no light).
2. Adjust GMA1 and GMA2 ICS volume to a comfortable level.
3. Plug in a headset at each COCKPIT ICS position. One at a time, plug a headset into each left
and right CABIN ICS jack location (one headset on right, one headset on left).
4. Verify the following:
•
Two-way communication between each CABIN ICS jack position.
•
CABIN ICS positions cannot be heard by the pilot or copilot.
5. Select GMA1 pilot
ICS ISOLATION
button and verify the following:
•
Passengers can communicate with each other.
•
The copilot cannot hear pilot and the pilot cannot hear passengers or copilot.
6. Deselect GMA1 pilot
ICS ISOLATION
.
7. Repeat steps 5-6 using GMA2 for copilot.
8. On GMA1 select COM1 MIC and AUDIO.
9. Ensure
INTR COM
is deselected on GMA1 or GMA2. Verify an active (green) COM frequency is
displayed on both PFDs .
10. On GMA1, select
PA
and verify the PA select annunciator is illuminated on GMA1. Verify COM1
active frequency is displayed white.
11. On GMA 2, select
PA
and verify the PA select annunciator is illuminated on GMA2. Verify COM2
active frequency is displayed white
12. Initiate passenger address using pilot’s headset boom mic by keying the pilots
PTT
. Verify clear
PA audio can be heard over cabin speaker and passenger headsets,
PA
selected annunciator
on GMA1 flashes ~ once per second during PA address. Repeat using pilot hand mic.
13. Initiate passenger address using copilot’s headset boom mic by keying the copilots
PTT
. Verify
clear PA audio can be heard over cabin speaker and passenger headsets, PA selected
annunciator on GMA1 flashes ~ once per second during PA address. Repeat using copilot hand
mic.
