Table 4-2 Gad 29/29B, Gad 13 Supporting Hardware - Garmin G5 Installation Manual

GAD 29/29B and GAD 13 Mounting Requirements
4.1.4
The GAD 29/29B should be mounted to a surface known to have sufficient structural integrity to
withstand additional inertial forces imposed by the 0.63-pound unit. The GAD 13 should be mounted to a
surface known to have sufficient structural integrity to withstand additional inertial forces imposed by the
0.24-pound unit.
In order to satisfy the structural mounting requirements for the GAD 29/29B and GAD 13, the following
conditions must be met:
1) The mounting structure, existing or new, must be electrically bonded to the airframe per Section 4.5.
2) Any supporting structure must be rigidly connected to the aircraft primary structure through strong
structural members capable of supporting substantial loads.
3) Mounting platform shall not span greater than 12" in width or length without direct attachment to
primary structure. If mounting platform does span greater than 12", add necessary stringers, doublers,
bulkhead flange reinforcements, etc., to provide adequate support. Existing honeycomb core
sandwich panels with aluminum face sheets are adequate and do not require additional reinforcement.
4) A minimum of 3" between the GAD 29/29B and GAD 13 connector end and any object must be
maintained to ensure clearance for connectors and wire harness.
5) If a support bracket or shelf needs to be fabricated, it should be fabricated and attached to the aircraft
structure in accordance with the methods outlined in AC43.13-2B Chapter 1 and 2, AC43.13-1B
Chapter 4, and the following requirements:
a) Material shall be 2024-T3 aluminum alloy sheet per AMS-QQ-A-250/4 or Clad 2024-T3
aluminum alloy sheet per AMS-QQ-A-250/5.
b) For the GAD 29/29B, material shall be minimum 0.040 inch thick. For the GAD 13, material
shall be minimum 0.032 inch thick.
c) Material shall have some type of corrosion protection (primer, alodine, etc.)
d) It shall be attached to primary aircraft structure with a minimum of 4 fasteners or rivets listed in
Table 4-2.
Hardware
Rivets
Screws
Washers
Using the hardware called out in Figure 4-40 and Figure 4-41, mount the GAD 29/29B and GAD 13,
respectively, to the chosen mounting location. Recommended torque of fasteners is 20-25 in-lbs.
Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual

Table 4-2 GAD 29/29B, GAD 13 Supporting Hardware

Minimum Specifications
MS20470AD3-X (3/32 Diameter, Length A/R)
MS35206-XXX (#6-32, Length A/R)
Nuts
NAS1149FN632P
MS21042L06
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