Troubleshooting guide

ARTEX AIRCRAFT SUPPLIES, INC. 570-1600
The mounting location must conform to the requirements of RTCA DO-204 and AC 43.13. DO-
204 Sec 3.1.8 states:
“The ELT shall be mounted to primary aircraft load carrying structures such as
trusses, bulkheads longerons, spars, o floor beams (not aircraf skin). The
mounts shall have a maximum static local deflection no greater than 2.5 mm
(0.1 in.) when a force of 450 Newtons (100 lbs) is applied to the mount in the
most flexible direction. Deflection measurements shall be made with reference
to another part of the airframe not less than 0.3 meters (1-foot) nor more than
1.0 m (three feet) from the mounting location.”
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Mount the ELT so that the longitudinal axis of the ELT (the axis extending through the longest
dimension) is aligned with that of the aircraft within 10º. The ELT mount can be rotated about
the longitudinal axis, i.e., the ELT can be mounted on the floor, walls or overhead, so long as it
‘points’ to the front of the aircraft.
Using the template provided, mark and drill four mounting holes using a #19 (0.1660”/ 4.2mm)
drill bit. Install the mounting tray. Artex suggests using the outermost mounting hole-pattern
on the template for minimum flexure of the mounting tray. Use the 8-32 X 5/8” Phillips, pan-
head screws, nuts and flat washers provided.
Refer to paragraph 2.10 (page 28) for specific information regarding helicopter installations.
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