Textron Cessna 172R - Insufficient Rate of Charge; Other Emergencies; Windshield Damage

CESSNA
MODEL
172R
SECTION
3
EMERGENCY
PROCEDURES
INSUFFICIENT
RATE
OF CHARGE
NOTE
The low
voltage
annunciator
(VOLTS)
may
come on
and
I
ammeter
discharge
indications
may
occur
during
low
RPM
conditions with
an
electrical
load
on
the
system,
such
as
during
a
low
RPM
taxi. Under
these
conditions,
the
■
annuciator
will
go
off
at
higher
RPM.
I
If
the
overvoltage
sensor
should shut down the alternator
and
trip
the
alternator
circuit
breaker
(ALT FLD),
or
if
the alternator
output
is|
low,
a
discharge
rate
will
be
shown
on
the
ammeter
followed
by
illumination
of
the
low
voltage
annunciator
(VOLTS).
Since
thisl
may
be
a
"nuisance"
trip
out,
an
attempt
should
be made
to
reactivate the
alternator
system.
To
reactivate,
set
the
avionics!
master
switch
to
the
OFF
position,
check
that the alternator
circuit!
breaker
(ALT
FLD)
is
in,
then
set
both
sides
of
the
master
switch
tol
the
OFF
position
and
then
to
the
ON
position.
If
the
problem
no|
longer
exists,
normal alternator
charging
will
resume
and
the low
voltage
annunciator
(VOLTS)
will
go
off.
The avionics
master
switch
I
may
then be returned
to
the
ON
position.
|
If
the
annunciator
illuminates
again,
a
malfunction
is
confirmed.!
In
this
event,
the
flight
should
be
terminated
and/or
the
current
drain
on
the
battery
minimized
because the
battery
can
supply
the
electrical
system
for
only
a
limited
period
of
time.
Battery
power
must
be
conserved
for
later
operation
of
the
wing
flaps
and,
if
the
emergency
occurs
at
night,
for
possible
use
of
the
landing
lights
during
landing.
OTHER
EMERGENCIES
WINDSHIELD
DAMAGE
If
a
bird strike
or
other
incident
should
damage
the windshield
in
flight
to
the
point
of
creating
an
opening,
a
significant
loss
in
performance
may
be
expected.
This loss
may
be
minimized
in
some
cases
(depending
on
amount
of
damage,
altitude,
etc.)
by
opening
the
side
windows
while the
airplane
is
maneuvered
for
a
landing
at
the
nearest
airport.
If
airplane
performance
or
other
adverse
conditions
preclude
landing
at
an
airport,
prepare
for
an
"off
airport"
landing
in
accordance
with
the
Precautionary
Landing
With
Engine
Power
or
Ditching
checklists.
Revision
7
3-23/3-24
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