Troubleshooting guide

ARTEX AIRCRAFT SUPPLIES, INC. 570-1600
1.3 Description
The ME406 and the ME406HM are type AF (automatic fixed) beacons.
The ME406HM also features an additional 5 axis G-switch module that allows the ELT to be
activated in any of six axes. These 5 auxiliary “G” switches are a “non-TSO function” as
described in FAA Notice 8150.3. This “non-TSO” function has the following characteristics:
1. The additional 5 auxiliary “G” switches provide crash sensing in the axes other than
“forward” at a nominal 12 “G” threshold which may be encountered with rotor aircraft.
There is no effect on any other performance specifications, software, hardware,
environmental, or qualification levels.
2. There are no additional interface requirements for the non-TSO function.
3. There are no additional installation and operating instructions or limitations, or any
additional instructions for continued airworthiness (ICA), for the non-TSO function.
4. Artex has determined that there are no additional failure modes or hazards introduced
by use of the non-TSO function.
Inputs and outputs are protected against electrostatic discharge (ESD) and connections to +28V
or ground. If a terminal is inadvertently misconnected or a wire shorted, the ME406 will operate
normally after the condition has been corrected. The RF output is through a single BNC
connector.
All functions of the ME406 or ME406HM are under microprocessor control. A self-test routine
checks ELT operation and installation, then presents the results as visual and auditory ‘error
codes’ to aid in troubleshooting and to indicate status. Software is approved per the
requirements of RTCA/DO-178B for Level D software.
The battery pack consists of two D-size, lithium cells mounted in a cover assembly and is field
replaceable. Rated life is 6 years or one hour of use, which ever comes first, as specified by FAR
91.207(c).
Installation kits are available containing all major components needed to install the beacon.
1.4 Certification
The ME406 (P/N 453-6603) and ME406HM (P/N 453-6604) are certified to the following:
• TSO C126
• TSO C91a in the 121.5/406 MHz configuration as referenced in TSO-C126, paragraph
(e)
• FAR Part 91 – mandatory automatic ELT requirements
• ETSO 2C126
• Transport Canada
• Industry Canada (IC:121.5B-ME406AF)
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