INSTALLATION MANUAL OPERATION MANUAL
KANNAD 406 AS
PAGE 401
JUN 29/2022
© 2022 Orolia S.A.S. All rights are strictly reserved.
TROUBLESHOOTING
1. General
Procedure for fault isolation on board uses the visual indicator of the ELT’s front
panel. This visual indicator is activated by a self-test capability within the ELT.
2. Faults on Self-test
A. Visual Indicator
When the self-test is carried out, the number of flashes gives an indication of
the faulty parameter detected during the self-test.
(1)3+1 flashes
- Low battery voltage:
Check battery, refer to relevant CMM for test and repair.
(2) 3+2 flashes
- Low RF power:
Check 406 MHz power, refer to relevant CMM for test and repair.
(3) 3+3 flashes
- Faulty VCO locking (faulty frequency):
Check frequencies, refer to relevant CMM for test and repair.
(4) 3+4 flashes
- No identification programmed
Check programming, refer to relevant CMM for test and repair.
3. Other faults detected
A. Buzzer
(1)Buzzer does not operate
- Refer to relevant CMM for test and repair.
(2) Buzzer operates permanently when ELT in ARM mode
- Refer to relevant CMM for test and repair.
NOTE: for CMM download and other servicing instructions, refer to Service &
Support section of Orolia’s Web site: https://www.orolia.com/support/
Repair and battery replacement can only be carried out by PART 145 /
FAR 145 avionics workshops (or equivalent agreement according to
local regulations).
Additional approval from Orolia is required. Refer to Service Letter SL
S18XX50X-25-02 Maintenance Policy for KANNAD ELTs.
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