INSTALLATION MANUAL OPERATION MANUAL
KANNAD 406 AP-H
PAGE 401
JUL 24/2013
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 tests and repair.
(2) 3+2 flashes
- Low RF power:
Check 406 MHz power, refer to relevant CMM for tests and repair.
(3) 3+3 flashes
- Faulty VCO locking (faulty frequency):
Check 406 MHz frequency, refer to relevant CMM for tests and repair.
(4) 3+4 flashes
- No identification programmed
refer to relevant CMM for tests and repair.
Note: for CMM download and other servicing instructions, refer to Service &
Support section of Kannad Aviation Web site: :
3. Other faults detected
A. Buzzer
(1)Buzzer does not operate
- Refer to refer to relevant CMM for tests and repair
(see note above)
.
(2) Buzzer operates permanently when ELT in ARM mode
- refer to relevant CMM for tests and repair
(see note above)
.
Repair and battery replacement can only be carried out by PART 145 /
FAR 145 avionics workshops (or equivalent agreement according to
local regulations).
