Electrical Overload (3.5J) - Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

PIPER AIRCRAFT CORPORATION
PA-28R-201, ARROW
SECTION 3
EMERGENCY PROCEDURES
3.25 ELECTRICAL FAILURE (3.5i) (continued)
If the ammeter continues to indicate ZERO output, or if the alternator
will not remain reset, turn off the ALTR switch, maintain minimum
electrical load and land as soon as practical. All electrical load is being
supplied by the battery.
3.27 ELECTRICAL OVERLOAD (Alternator over 20 amps above known
elec.tricalload) (3.5j)
An abnormally high alternator output may be caused by a low battery,
battery fault, or other abnormal electrical load.
Should an abnormally high alternator output be observed, turn the
BATT MASTR (battery master) switch OFF. If the ammeter reading does
NOT decrease, turn the ALTR (alternator) switch OFF and land as soon as
possible. The landing gear must be lowered using the Emergency Landing
Gear Extension procedure (3.33).
If, after turning the BATT MASTR switch OFF, the ammeter reading
DOES decrease, turn the BATT MASTR switch ON, and continue to
monitor the ammeter. If the ammeter reading does not begin to decrease
within five minutes, turn the BATT MASTR switch OFF and land as soon
as possible.
CAUTION
If the battery is depleted, the landing gear must
be lowered using the emergency extension
procedure. The gear position lights will be
inoperative.
NOTE
Due to increased system voltage and radio
frequency noise, operation with ALTR switch
ON and BATT MASTR switch OFF should be
made only when required by an electrical
system failure.
If the ammeter reading DOES begin to decrease within five minutes
after the BATT MASTR switch is turned ON, proceed with flight while
continuing to monitor ammeter.
ISSUED: SEPTEMBER 15, 1988 REPORT: VB-1365
3-17