ACR&Artex B406-4 - Manual (Page 31)

25-62-03
Page 31 of 87
JUN 20/13
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
TASK 25-62-03-870-803
2. Operation
SUBTASK 25-62-03-870-001
A. Operational Overview
(1) See Figure 6. ELT Operational Flow Diagram.
(2) A primary feature of the B406-4 ELT is its simplicity of operation. As long as the ELT is
connected to the remote switch panel harness ELT connector, such that pins 5 and 8 are
jumpered (G-switch loop), it will activate in the event of a crash.
NOTE: Neither the cockpit remote panel switch or the ELT local switch can be positioned in
such a manner as to prevent automatic activation when the ELT is connected
properly.
Figure 6. ELT Operational Flow Diagram
(3) ELT operation is designed to prevent human error and misuse in regards to automatic
activation. The ELT cannot be activated by dropping, rough handling or during shipping.
(4) When the ELT is activated, the presence of the emergency sweep tone and the illuminated
cockpit remote switch panel light indicates an active ELT. The cockpit ELT remote panel light
must immediately illuminate upon ELT activation and stay on steady.
NOTE: The local LED on the ELT flashes every 3-4 seconds when the ELT is activated.
(5) The ELT is considered to be either “ACTIVE” or “INACTIVE”. When “INACTIVE”, the ELT is in a
state of rest and performs no functions. Taking the ELT from the “INACTIVE” state to the
ELT
“INACTIVE”
ELT “ACTIVE”
BUZZER “ON”
LED “ON”
ELT
SWITCH
“ON”
REMOTE
SWITCH
“ON”
G-SWITCH
“ON”
ELT OR
REMOTE SW
“RESET”
YES
YES
NO
NO
NO
YES
NO
YES