The items that may be inoperative can be
determined from the electrical system
schematic in Chapter 2, Systems.
g. BATTERY CHG Annunciator Illuminated
During Ground Operations. The BATTERY CHG
annunciator will illuminate after an engine start. If the
annunciator does not extinguish within approximately
5 minutes, monitor the battery charge current using the
1. One generator OFF.
2. Voltmeter Indicating 28 volts.
3. Momentarily turn the battery OFF Note
change in loadmeter indication.
The change in loadmeter indication is the
battery charge current and should be NO
more than 2.5% (only perceivable needle
unsatisfactory, repeat the check until the
charge current decreases to less than
h. BATTERY CHG Annunciator Illuminated In
Flight. In-flight illumination of the BATTERY CHG
annunciator indicates a possible battery malfunction.
Use the following procedure:
1. BATT OFF.
2. BATTERY CHG annunciator Check. If
extinguished, continue flight. If the light
remains illuminated, land as soon as
i. Generator Overheat F3 .
1. GEN OFF.
2. Electrical load Check.
3. Current limiters Check.
j. Current Limiter Check.
1. If both DC GEN
illuminated Individually press each volt/
loadmeter switch and observe voltage. If
voltmeter, that current limiter has burned
2. If one DC GEN annunciator is illuminated
Press both volt/loadmeter switches and
observe voltage. If generator voltage is
not seen on the affected side, one or more
current limiters have burned open. If
battery voltage is not seen on the affected
side, the current limiter for that side has
9-29. EMERGENCY DESCENT.
Emergency descent is a maximum effort in which
damage to the aircraft must be considered secondary
to getting the aircraft down. The following procedure
assumes the structural integrity of the aircraft and
smooth flight conditions. If structural integrity is in
doubt, limit speed as much as possible, reduce rate of
descent if necessary, and avoid high maneuvering
loads. For emergency descent, perform the following:
1. POWER levers IDLE.
2. PROP levers HIGH RPM.
3. FLAPS APPROACH.
4. GEAR DN.
5. Airspeed 181 KIAS maximum.
Windshield defogging may be required.
9-30. LANDING EMERGENCIES.
Structural damage may exist after landing
malfunctions. Under no circumstances
shall an attempt be made to inspect the
aircraft until jacks have been installed.
If the HYD FLUID LOW annunciator
illuminates during flight, attempt to extend
the landing gear normally upon reaching
destination. If the landing gear fails to
extend, follow the procedures for LANDING
GEAR MANUAL EXTENSION.
a. Landing Gear Unsafe Indication. Should
one or more of the landing gear fail to indicate a safe
condition, the following steps should be taken before
proceeding manually to extend the gear.
1. LDG GEAR CONTROL Check DN.