111.11,
••••••
[h~ill[RD~'IT
;mm
CURRENT
LIMITER
FAILURE/lLLUMINATION
OF
CUR
LIM
(CUR
UMlTER)
UGHT
IN
FUGHT
A battery charging bus current limiter (275-amp) failure is evidenced by illu-
mination of
the
red CUR UM light (aircraft 35-370., 35-390.
and
subse-
quent
and
aircraft 36-048
and
subsequent)
or
amber L CUR UMITER
or
R CUR UMITER light (aircraft 35-0.67 thru
35-389
except 35-370.
and
36-0.18 thru
36-047
incorporating
AMK
80-17
or
AAK 81-1),
or
failure
to
successfuIly complete the battery charging bus current limiter check after
a starter-assist airstart. Should a battery charging bus current limiter
fail:
1. DC Voltmeter - Check. Failure of both
275-amp
current limiters is
indicated when the DC voltmeter indicates battery voltage (25 volts
or
less).
2. -
Hone
275-amp
current limiter
has
faded:
a. Electrical Load - Reduce
if
required
to
observe generator
limits.
b.
Continue flight but monitor electrical loads.
-If
both
275-amp
current limiters have faded -
Aircraft
not
incorporating
AMK 85-1:
a. Electrical Load - Reduce.
Electrical power
to
the essential buses
is
being supplied
by
the ship's batteries.
All
nonessential equipment
should be turned off
or
circuit breakers pulled. Fully
charged batteries should power the minimum electrical
equipment for night instrument
flight
for apprOximately
30
minutes.
b. Land as soon as practical.
- H
both
275-amp
current limiters
have
faded -
Aircraft
incorporating
AMK
85-1:
a. COOL-FAN Switch - OFF.
b.
On
aircraft incorporating AAK 86-1
or
5B
35/36-21-17, I
W/S
AUX
HEAT
DEFOG Switch -
OFF.
c.
RECOG
LT
Switch -
OFF.
d. AUX
HT
Switch
(if
installed) - OFF
:s:~
Electrical power
to
the battery charging bus
is
being
supplied
by
the
ship's batteries. If the batteries should
become depleted, primary pitch trim and stall warning
systems
will
be inoperative.
3. After landing, replace failed 275-amp current limiter(s) prior to
next
flight.
FAA APPROVED 4-30-76
REISSUED
2·25-81. CHANGE
10
3-3
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