G900X/G950 Installation and Maintenance Manual – Airframe Specific Installation Instructions (G900X Only)
Page B-51
190-00719-00
Revision D
3.
Measure the fuselage in multiple locations to determine the size of the shelf. The shelf will have
an approximate trapezoidal shape and should have a depth of at least 4.0 in. Cut the shelf from
0.25 in. thick, 2-ply per side prepreg. Cut a 2.50 in. diameter hole in the center of the shelf, as
indicated in Figure B-65. Alternately, the 2.50 in. diameter hole can move left or right on the
shelf, so long as there is adequate clearance to install or remove the magnetometer. By placing the
hole in the center of the shelf, the elevator control tube can be used more effectively in a later step
to align the GMU 44 Installation Rack with the aircraft’s forward direction. Prepare for shelf
installation by sanding, roughing up, and cleaning all bonding areas on the shelf and fuselage for
best adhesion.
Figure B-65. Example Magnetometer Shelf
