Operation; Operational Overview; Figure 8. Elt Operational Flow Diagram - ACR Electronics Cobham C406-1 Series Abbreviated Component Maintenance Manual

TASK 25-62-10-870-802

2. Operation

SUBTASK 25-62-10-870-001
A.

Operational Overview

(1) See "Figure 8. ELT Operational Flow Diagram".
(2) A primary feature of the C406-1 Series ELT is its simplicity of operation. As long as the ELT is
connected to the remote switch harness ELT connector, such that pins 5 and 8 are jumpered
(G-switch loop), it will activate in the event of a crash.
NOTE:
(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 flashing
cockpit remote switch panel LED indicates an active, normal functioning ELT. The remote
switch LED must immediately begin to flash continuously upon ELT activation.
(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
"ACTIVE" state requires a positive switch transition from either the cockpit remote switch, ELT
local switch, or G-switch.
COBHAM AVIONICS WULFSBERG ELECTRONICS
ABBREVIATED COMPONENT MAINTENANCE MANUAL
C406-1 (453-5002), C406-1HM (453-5003)
ELT
"INACTIVE"
ELT
SWITCH
"ON"
NO
REMOTE
SWITCH
"ON"
NO
G-SWITCH
"ON"
NO

Figure 8. ELT Operational Flow Diagram

Neither the cockpit remote switch or the ELT local switch can be positioned in such a
manner as to prevent automatic activation when the ELT is connected properly.
ELT "ACTIVE"
BUZZER "ON"
LED "ON"
ELT OR
REMOTE SW
NO YES
"RESET"
YES
YES
YES
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APR 06/10