Power Requirements; Electrical Bonding; Table 2-1 - Power Requirements - Garmin GFC 500 Maintenance Manual

2.3 Power Requirements

Table 2-1 below summarizes the power requirements for the GFC 500 LRUs.
LRU Characteristics
Average Current Draw @ 14 VDC
Max Current Draw @ 14 VDC
GMC 507
Average Current Draw @ 28 VDC
Max Current Draw @ 28 VDC
Average Current Draw @ 14 VDC
Max Current Draw @ 14 VDC
GSA 28
Average Current Draw @ 28 VDC
Max Current Draw @ 28 VDC

2.4 Electrical Bonding

For the purposes of this STC, aircraft ground reference definitions vary according to airframe
type as defined in Table 2-2. Refer to the periodic test and reconditioned resistance values
corresponding to these ground reference definitions when performing the equipment bonding
tests in Section 4.5.
The periodic test value is the value allowed during the bonding checks specified in Section 4.5.
The reconditioned value is the value allowed on initial installation or if the bond must be
reworked if the periodic test value is exceeded.
Refer to SAE ARP 1870 Section 5 when surface preparation is required to achieve electrical
bond.
GFC 500 Autopilot with ESP Part 23 AML STC Maintenance Manual
190-02291-01
Table 2-1 – Power Requirements
Specifications
0.11 A
0.20 A
0.06 A
0.11 A
0.36 A
1.80 A
0.20 A
0.90 A
Revision 1
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