Piper PA-24-250 Comanche - Battery Overcharge; Electrical Failures (Generator); Excessive Discharge

Aircrart Public31ions
Pipcr Comanchc 250 (Early Model)
Section - 3
Ernergcncy Procedures
ELECTRICAL FAILURES
(For an Aircraft Equipped With a Generator)
1.) Excessive Discharge:
** NOTE **
The generator produces no charging output when the engine is operated below approximately
1200 rpm. An excessive rate of discharge at normal operating rpm indicates a defective
generator or voltage regulator.
Ammeter
........................... .. .............................................. Indicates Battery Discharge
....................... ............................ Generator Circuit Breaker .. Check and Reset as Required
** NOTE **
Before attempting to reset any circuit breaker, allow for a two to five minute cooling off
period, and reset only once.
If circuit breaker is reset (closed):
. .
Electrical Load ................................................................................ Reduce to a Wmmum
If generator output cannot be maintained with electrical load reduced to a minimum: Manually
pull the generator circuit breaker, maintain minimum electrical load, and land as soon as
practical.
** NOTE **
The battery is the only remaining source of power.
If the battery is depleted: Land without flaps. (VMP
= 95 mph or 83 kt) Initiate Manual
Gear Extension procedure @Part
3. (Page 3-8)
2.) Battery Overcharge:
** NOTE **
A high rate of charge is normal for the first few minutes of flight. An excessive rate of charge
after several minutes at normal operating rpm indicates a defective battery or voltage regulator.
Ammeter
.................................................................................. Indicates Excessive Charge
. .
Generator C~rcu~t Breaker ..................................... ... ........................................................ Pull
Electrical Load
........................ .. .................................................... Reduce to a Minimum
Anticipate complete electrical failure. Land as soon as practical.
** NOTE **
The battery (whlch may be defective) is the only remaining source of power
If the battery is depleted Land without flaps (VMP
= 95 mph or 83 kt) Initiate Manual
i
Gear Extension procedure @ Part 3 (Page 3-8)
Copyright: 1993
Page 3-4