Cessna 172R Operating Handbook page 270

SECTION 7
AIRPLANE & SYSTEMS DESCRIPTION
VENTILATE THE CABIN PROMPTLY AFTER
SUCCESSFULLY EXTINGUISHING THE FIRE TO
REDUCE THE GASES PRODUCED BY THERMAL
DECOMPOSITION.
Anticipate approximately eight seconds of
3.
duration.
Fire extinguishers should be recharged by a qualified fire
extinguisher agency after each use. Such agencies are listed under
"Fire Extinguisher" in the telephone directory.
secure the extinguisher
loose on shelves or
7-50
A
WARNING
its mounting bracket; do not allow it
to
seats.
CESSNA
MODEL 172R
discharge
After recharging,
lie
to
Revision
8