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PULSES
PROBABLE CAUSE
5
No position data present or 406 MHz message not programmed
6
G-switch loop error
7
ELT battery usage over one hour
5.2
Position Data Verification
Artex does not require this test be performed; any problem with received position data
will be indicated by the 5-pulse error (Table 5-1) during self-test (Subsection 5.1.2).
CAUTION
:
Artex only recommends this test be performed if the 406 MHz signal can
be properly shielded inside a screen room or container. If the 406 MHz “live” burst is
received by an SAR satellite,
the signal will be interpreted as an actual
emergency signal
.
In order to read position data with a beacon test set, the following criteria must be met:
•
The aircraft GPS system must be powered on for at least 80 seconds prior to ELT
activation, and
•
The ELT must be active for at least 50 seconds, or until the first “live” 406 MHz
burst is transmitted and received by a beacon test set.
The “live” burst message will contain position data (i.e., latitude and longitude).
