Cockpit Switch And Indicator Light; Buzzer; Operation - BOMBARDIER LEARJET 40 Pilot's Manual

Pilot's Manual

COCKPIT SWITCH AND INDICATOR LIGHT

The ELT 110-406 remote control (cockpit panel switch) provides manu-
al On, Armed, and Reset modes. A 28-vdc indicator light, powered
through the ELT WARN circuit breaker on the options circuit breaker
panel in the tailcone, flashes continuously if the ELT has been activated
and is transmitting.

BUZZER

The buzzer (aural monitor) provides a distinct signal (loud, siren-type
sound) enabling a search and rescue team to locate an aircraft with a
transmitting ELT in a confined area with a large number of aircraft
(such as an airport). The buzzer is installed in the tail section and is
powered by the ELT battery pack. The buzzer does not operate contin-
uously, but sounds at predetermined intervals, and runs for shorter pe-
riods toward the end of battery life.

OPERATION

Under normal operation, the cockpit switch is in the ARM position. The
switch on the ELT unit will be positioned OFF. With these switch set-
tings, the ELT will automatically activate on impact. To manually acti-
vate the ELT, set the cockpit switch to the ON position. When the ELT
is activated, the presence of the emergency swept tone, a flashing cock-
pit indicator light, and the buzzer in the tail indicates a normally func-
tioning unit. If the ELT is activated, it can be reset. This is done by
moving the cockpit switch to ON and then immediately back to ARM.
The 406 MHz transmitter will operate for 24 hours and shut down au-
tomatically. The 121.5 and 243.0 MHz transmitter will continue to oper-
ate until the unit has exhausted the battery power. The 406 MHz
transmitter transmits a digital message that allows search and rescue
authorities to retrieve information from a database. Information con-
tained in the database that may be useful include:
• Type of aircraft.
• Address of owner.
• Telephone number of owner.
• Aircraft registration number.
• Alternate emergency contact.
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PM-132A