Piper ARCHER II - Page 60

SECTION
3
PIPER
AIRCRAFT
CORPORATION
EMERGENCY
PROCEDURES
PA-28-181,
ARCHER
II
3.24
ELECTRICAL
OVERLOAD
(Alternator
over
20
amps
above
known
electrical
load)
If
abnormally
high
alternator
output
is
observed
(more
than
20
amps
above
known
electrical
load
for
the
operating
conditions)
it
may
be
caused
by
a
low
battery,
a
battery
fault
or
other
abnormal
electrical
joad.
If
the
cause
is
a
low
battery,
the
indication
should
begin
to
decrease
toward
normal
within
5
minutes.
If
the
overload
condition
persists
attempt
to
reduce
the
load
by
turning
off
non-essential
equipment.
For
airplanes
with
interlocked
BAT
and
ALT
switch
operation,
when
the
electrical
load
cannot
be
reduced
turn
the
ALT
switch
OFF
and
land
as
soon
as
practical.
The
battery
is
the
only
remaining
source
of
electrical
power.
Also
anticipate
complete
electrical
failure.
For
airplanes
with
separate
BAT
and
ALT
switch
operations,
turn
the
BAT
switch
OFF
and
the
ammeter
should
decrease.
Turn
the
BAT
switch
ON
and
continue
to
monitor
the
ammeter.
If
the
alternator
output
does
not
decrease
within
5
minutes,
turn
the
BAT
switch
OFF
and
land
as
soon
as
practical.
All
electrical
loads
are
being
supplied
by
the
alternator.
NOTE
Due
to
higher
voltage
and
radio
frequency
noise,
operation
with
the
ALT
switch
ON
and
the
BAT
switch
OFF
should
be
made
only
when
required
by
an
electrical
failure.
REPORT:
VB-1120
ISSUED:
JULY
2,
1979
3-14
REVISED:
JANUARY
14,
1981