Cessna 172R Pilot Operating Handbook page 280

SECTION 9 - SUPPLEMENTS
CESSNA
SUPPLEMENT 4- FAA APPROVED
MODEL 172R
IN-FLIGHT MONITORING AND REPORTING
Pilot's are encouraged to monitor 121.5 MHz and/or 243.0 MHz
while
in
flight to assist in
identifying possible emergency ELT
transmissions.
On receiving
a signal, report the following
information to the nearest air traffic control facility:
Your position at the time the signal was first heard.
Your position at the time the signal was last heard.
Your position at maximum signal strength.
Your flight altitude and frequency on which the emergency
signal was heard -- 121.5 MHz or 243.0 MHz.
If possible,
positions should be given relative to a navigation aid. If the
aircraft has homing equipment, provide the bearing to the
emergency signal with each reported position.
SECTION 5
PERFORMANCE
There is no change in airplane performance when the ELT is
installed.
S4-8
Dec 2/96
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