ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
Page 37 of 70
25-62-03
CODE
PROBABLE CAUSE
POSSIBLE SOLUTION
3-Flash
(cont.)
Low power output
Battery low
3A fuse on battery pack circuit board faulty
Improper programming
Verify 406 MHz programming
Transmitter module faulty
Cannot be repaired in field - Return to
factory for servicing
5-Flash
Indicates there is no navigation position data present
Aircraft navigation system off
Turn on navigation system
Faulty system interface wiring or
connections
Check wiring and connections for
continuity and security
No 453-6501 ELT/NAV Interface-B
installed
Install 453-6501 ELT/NAV Interface -B
Reprogram to short message
7-Flash
Indicates a battery problem
Operating time is >1 hour
Replace battery pack
Electrical circuits faulty
Table 6 ELT Self-Test Error Codes Troubleshooting Guide