Piper ARCHER II - Electrical Failures; Electrical Overload

SECTION
3
PIPER
AIRCRAFT
CORPORATION
EMERGENCY
PROCEDURES
oo
|
ow
PA-28-181,
ARCHER
IT
ELECTRICAL FAILURES
NOTE
When
opcrating
with
light
electrical
load
and
a
fully
charged
battery,
the
Alternator
Inop.
Light
may
illuminate
due
to
minimal
alternator
output.
If
the
alternator
is
functional,
a
slight
increase
in
electrical
load should extinguish the Inop. indication.
ALT annunciator light illuminated:
AMIMCICD.cececsecscesecccceeeevenesessenesesesecscarscsssaseveceesesavasatencs
Check
to
verify
inop.
alt.
‘If ammeter shows zero:
Reduce electrical loads to minimum:
ALT
circuit
breakers...
cccceccccsceedesseessosseces
eeeeessaaceesessaseasssscevencess
Check
and
reset
|
serantaeetsesessscoevsasausssccecsesssesescessessessesascoererauauestsgerseassuseaetenesassancassere
as
required
ALT
SWICH
occ
eeteseceesescenesssescscssesesesessssessevasasseansvensatatscavesesessatacsissesveneeses
ON
If
power
not
restored:
ALT
SWHCHLo
ce
cecescsescesseesnesstesecseessesnssassssssersussestscaressssnesntesesaresusaucasessesseessee
OFF
If
alternator
output
cannot
be
restored,
reduce
electrical
loads
and
land
as
soon
as
practical.
The
battery
is
the
only
remaining
source
of
electrical
power.
ELECTRICAL
OVERLOAD
(Alternator
over
20
amps
above
known
electrical
load)
FOR
AIRPLANES
WITH
INTERLOCKED
BAT
AND
ALT
SWITCH
OPERATION
Electrical
load
woe.
cccccessccscseccecessesessvssscacsesesssarscsesevevevsesssapseeseececesecececesecs
Reduce
If alternator loads are reduced:
ALT
SWICK.
cece
cccseeseunesssecsscsusersveceuseesussssnecssesssscsnscssestsceniecesensnuerssueeneesass
OFF
and
as
soon
as
practical.
Battery
is
the
only
remaining
source
of
power.
Anticipate
complete
electrical
failure.
REPORT:
VB-1120
ISSUED:
JULY
2,
1979
36
0
mo
REVISED:
APRIL
2,
1998”