EMERGENCY LOCATOR TRANSMITTER (ELT).
The E LT c o nsi s ts of a self -con t ain e d dua l -fr e quen c y rad io tr a nsmi t¬
ter and battery power supply, and is activated by an impact of 5g or more
as may be experienced in acrash landing. The ELT emits an omni¬
directional signal on the international distress frequencies of 121. 5and
243.0 MHz. General aviation and commercial aircraft, the FAA, and
CAP monitor 121. 5MHz, and 243.0 MHz is monitored by the military.
Following acrash landing, the ELT will provide line-of-sight transmis¬
sion up to 100 miles at 10,000 feet. The duration of ELT transmissions
is affected by ambient temperature. At temperatures of +70° to +130°F,
continuous transmission for 115 hours can be expected; atemperature of
-40° Fwill shorten the duration to 70 hours.
Tlie ELT is readily identified as abright orange unit mounted behind
the baggage compartment wall on the right side of the fuselage. To gain
access to the unit, grasp the edge of the baggage wall and pull. The ELT
is operated by acontrol panel at the forward facing end of the unit (see
fi g u r e 3 - 1 ) .
ELT OPERATION.
(1) NORMAL OPERATION: As long as the function selector switch
remains in the ARM position, the ELT automatically activates fol-'^
lowing a n impact o f 5gor m o r e over a s hort tim e period.
(2) E LT FA ILU RE: I f "g" swit c h ac tua t ion i s qu e sti one d foll owi n g
aminor crash landing, gain access to the ELT and place the function
selector switch in the ON position.
(3 ) P RI OR TO S I G H TI NG RE SC UE AI RC R A F T: C on s e r v e a i rc ra f t
battery. Do not activate radio transceiver.
(4) AFTER SIGHTING RESCUE AIRCRAFT: Place ELT function
selector switch in the OFF position, preventing radio interference.
Attempt contact with rescue aircraft with the radio transceiver set
to afrequency of 121. 5MHz. If no contact is established, return
t h e f u n c t i o n s e l e c t o r s w i t c h t o O N i m m e d i a t e l y.
(5 ) FOL LO W IN G RE S CU E: P lac e ELT f un cti on s el e ct or s wi t ch i n
the OFF p os i ti o n, t er m in a ti ng e m er gen cy t ran smi ss i on s .
3-10
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