ARTEX PRODUCTS / ACR ELECTRONICS, INC
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-1 (453-5002), C406-1HM (453-5003)
Page 33 of 67
Feb 28/2019
25-62-10
b)
The left hand example in Figure 11
is an ELT programmed for “User Protocol ELT with Serial Number”,
with a test Hex ID. The right hand example is an ELT programmed for “Standard Location Protocol ELT
with Serial Number”.
c)
Actual messages will vary depending on the protocol and information programmed into the ELT.
d)
If the ELT is programmed with a location (long message) protocol and disconnected from the ELT/NAV
Interface, the message will indicate “Position Invalid” in lieu of po
sition data, as shown in the right
hand example in Figure 11.
Figure 11 Short and Long 406 MHz Message Examples
5)
Repeat the activation and deactivation cycle if the ETS fails to read the message on the initial try. The 406
MHz oscillator may not be warmed up. If continued attempts to read the message fail, check for self-test
error codes and refer to Table 6 on page 34.
SUBTASK 25-62-10-750-011
P.
ELT Reset Check
–
Item 5h
1)
Place the ELT control switch in the “ON” position.
2)
Return the switch to the “OFF” position.
3)
If the ELT is working properly, the LED will stay on for approximately 1 second and then turn off. If a series
of flashes are displayed, refer to Table 6 on page 34.
NOTE:
A 5-flash error indication will occur if the ELT is programmed with a location protocol,
since no navigation input data is present.
SUBTASK 25-62-10-750-012
Q.
Installed Transmitter Test
–
Item 6
CAUTION:
DO NOT ALLOW THE DURATION OF THIS TEST TO EXCEED 5 SECONDS. THE ELT WILL
TRANSMIT A 406 MHZ SIGNAL AFTER THE ELT IS ACTIVATED FOR APPROXIMATELY 47
SECONDS. THE COSPAS-SARSAT SATELLITE SYSTEM WILL CONSIDER THE 406 MHZ
TRANSMISSION TO BE A VALID DISTRESS SIGNAL.
1)
Reinstall the ELT in accordance with SUBTASK 25-62-10-410-001 on page 54.
2)
Perform the following functional check within the first 5 minutes after the hour (UTC), as required by AC
43.13-1, Chapter 12, § 12-22, Note 3.
3)
Notify any nearby control tower of your intentions.
4)
Tune a receiver, usually the aircraft transceiver, to 121.5 MHz. NOTE:
An AM radio may be used to
receive the signal.
5)
Activate the ELT by placing the cockpit remote switch in the “ON” position. The LED will begin flashing
continuously.
