Figure 4-37 Gmu 11 Pitch And Roll Requirements; Table 4-1 Gmu 11 Supporting Hardware - Garmin G5 Installation Manual

d) It shall be attached to primary aircraft structure with a minimum of 4 non-magnetic fasteners or
rivets from Table 4-1.

Table 4-1 GMU 11 Supporting Hardware

Hardware Minimum Specifications
Rivets MS20470AD3-X (3/32 Diameter, Length A/R)
Screws MS51957-XX (#6-32, Stainless Steel, Length A/R)
Washers NAS1149CN632R (#6-32, Stainless Steel)
Nuts MS21044C06 (#6-32, Stainless Steel)
In general, wing mounting of the GMU 11 magnetometer is preferred. Fuselage mounting is permitted,
but NOT within two feet of the cabin area because of numerous potential disturbances that can interfere
with accurate operation. The GMU 11 must be mounted in a serviceable location in the aircraft (e.g.,
accessible through an access panel).
The GMU 11 must be oriented with the mounting flanges facing down to within 3.0° of the aircraft pitch
and roll axis as show in Figure 4-37.

Figure 4-37 GMU 11 Pitch and Roll Requirements

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Garmin G5 Electronic Flight Instrument Part 23 AML STC Installation Manual 190-01112-10
Rev. 21
Page 67