ATR 42 Model : 400/500
GENERAL
COMMUNICATIONS
P 10
MAY 98
001
1.05
.
10
EMERGENCY BEACON
The transmitter is located in the ceiling of the cabin between the passengers entry
door and the toilet door. The antenna is located in the fairing ahead of the stabilizer
fin. This system includes its own battery.
AUTO
transmission is made automatically on 121.5 MHz, 243 MHz and
406 MHz when deceleration exceeds 5 g (X MIT ALERT It
illuminates amber).
MAN
allows commanded operation (X MIT ALERT It illuminates amber)
AUTO TEST RST
Is used in case of undue alert (resert), or to test the emergency
beacon. Two cases are possible for the test :
- Net work : X MIT ALERT illuminates amber during 2 seconds
- Failure
: X MIT ALERT It flashes during 15 seconds.
CAUTION
: The test must not be performed in MAN mode.
Aircraft on ground (and electrically supplied), when the emergency beacon is triggered
after 30 seconds, the mechanical horn is triggered too.
AA
R
RR
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