ARTEX AIRCRAFT SUPPLIES ME406, Description, Operation, Installation And Maintenance Manual, Page: 43 / 68

ARTEX AIRCRAFT SUPPLIES, INC. 570-1600
• Performance Test, paragraph 4.2.2
•
Corrosion Inspection, paragraph 4.4.3
• Installed Transmitter Test (Self-Test), paragraph 4.4.9
• Battery Removal and Replacement, paragraphs. 4.4.4 and 4.4.5 respectively
− The battery pack is NOT rechargeable. The reference to recharging in the
Canadian regulation is NOT applicable to Artex products.
− The battery pack must be replaced if a seven flash error occurs when the ELT is
set to “ARM”.
• Shipping Instructions, paragraph 4.4.14
A complete maintenance program must be part of the annual checks for the aircraft. Artex
encourages aircraft users to perform simple checks including steps in paragraphs 4.4.1 to 4.4.3,
4.4.6 and 4.4.7 on a monthly basis.
4.2.2
Performance Test
A performance test is required for all Canadian installations during the annual maintenance. A
performance test can only be done by a certified avionics shop with proper equipment. The
avionics shop will test per CAR Part V, Standard 571, appendix G for the following:
NOTE: The following annual checks are a requirement of Canada. However, the
accumulated time of the tests will add significantly to the battery in use time.
This may cause a seven flash error due to exceeding the one hour limit. Testing
should minimize the “ON” time required. Replacing the battery is required if the
seven flash error occurs.
4.2.2.1
Peak Power Check
Measure the peak power after 3 minutes of operation
Remove the ELT from the aircraft per paragraphs 4.4.1 and 4.4.2. This test requires an RF
screen room or attenuator chamber. Output power may be measured using a suitable
Spectrum Analyzer connected to the output BNC connector of the ELT. Use a suitable
impedance matching device and/or attenuator in line with the ELT. Refer to Specifications,
paragraph 6.0 for output power minimum acceptable limits. The output contains two active
frequencies. The signal at 121.5 MHz is active except when the 406 MHz signal is active. The
two power output levels are different.
4.2.2.2
Frequency Check
Measure the frequency after 3 minutes of operation.
This test is best performed using a tester designed specifically for beacons of this type. A
spectrum analyzer can be used to measure frequency, but typically, will not be as accurate.
Keep in mind the 406 MHz signal bursts approximately every 50 seconds and is 440 ms in
duration. The amplitude is 37 ± 2 dBm.
Page 35 of 60