GDR-XXXX NAV/COM INSTALLATION MANUAL
64-000109
Page 46 of 62
CHAPTER 4 – GROUND FUNCTIONAL TESTS
This section provided the initial installation and return to service tests of the GDR.
PASS FAIL
1.0 PURPOSE OF TEST:
1.1
The procedures defined in this plan will demonstrate the proper
installation of the GDR-XXXX as installed on aircraft.
2.0 TEST EQUIPMENT REQUIRED:
2.1
Digital Multi-Meter (DMM)
Milliohm Meter
Aeroflex IFR-4000 or equivalent NAV/COM Test Set
3.0 PRE-OPERATIONAL TESTS:
3.1
Structural test of the GDR NAV/COM1 mounting shelf with tray
installed per Chapter 2, Section 4.
_____ _____
3.2
If installed, structural test of the GDR NAV/COM2 mounting shelf
with tray installed per Chapter 2, Section 4.
_____ _____
3.3
Using a Milliohm Meter, verify the resistance between the
NAV/COM1 tray assembly and structure is less than 2.5 milliohms.
_____
_____
3.4
If installed, use a Milliohm Meter and verify the resistance between
the NAV/COM2 tray assembly and structure is less than 2.5
milliohms.
_____
_____
3.4
Using a Milliohm Meter, verify the resistance between the
NAV/COM1 transceiver and the tray assembly when installed is
less than 2.5 milliohms.
_____
_____
3.5
If installed, use a Milliohm Meter and verify the resistance between
the NAV/COM2 transceiver and the tray assembly when installed
is less than 2.5 milliohms.
_____
_____
3.6
Using a DMM, 28VDC on P1, Pin 1 and P2, Pin 1 for all
GDRs installed in the aircraft.
_____
_____
3.7
Using a DMM, verify aircraft ground on P1, Pin 9 and P2, Pin 2 for
all GDRs installed in the aircraft.
_____
_____
3.8
Using a DMM, verify continuity of all audio wiring between each
GDR and the aircraft audio system. Verify there are no shorts
between signal wires and shields or airframe ground.
_____
_____
Summary of Contents for GDR- COM Series
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