Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 443 / 1956

PAGE 1
Feb 28/07 2J1
24-60-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
ELECTRICAL LOAD DISTRIBUTION
1. Emergency Operation
NOTE: All equipment will be operational with only one alternator functioning. To prevent overload with
only one alternator functioning, turn off non-essential equipment and any other equipment
necessary to reduce the load to less than 70 amps (
S/N’s 4636001 thru 4636131 ) or 75 amps
( S/N’s 4636132 and up ).
CAUTION: DO NOT MANUALLY OPERATE (PULL) THE ALTR1 OR ALTR2 CIRCUIT BREAKER
WHEN THE ENGINE IS RUNNING AND THE ALTERNATOR IS OPERATING PROPERLY.
A. With engine operating, turn Alternator No. 2 OFF. Check the appropriate ALTERNATOR INOP light
is illuminated.
CAUTION: SHOULD THE LOW BUS VOLTAGE LIGHT ILLUMINATE WHILE ENGAGING
ELECTRICAL EQUIPMENT, IMMEDIATELY REDUCE ELECTRICAL LOAD TO LESS
THAN:
-- 70 AMPS in S/N’s 4636001 THRU 4636131 , OR
-- 75 AMPS in S/N’s 4636132 AND UP
B. Turn ON essential electrical equipment, one unit at a time. Essential electrical equipment may
consist of:
C. Turn Alternator No. 2 ON; turn Alternator No. 1 OFF. Check to be sure that all equipment that was
supported by the No. 1 Alternator is supported by the No. 2 Alternator.
D. If necessary, the non-essential bus, and it’s related equipment, can be eliminated by pulling the
non-essential 70-amp circuit breaker on the Tie Bus Circuit Breaker panel.
E. Upon completing the foregoing checks, be sure that all electrical switches are OFF and all circuit
breakers have been reset.
2. Electrical Load
See Chart 1.
1. Instrument Panel Lights.
2. Annunciator Lights
3. Landing Gear Warning Horn
4. Stall Detector
5. Fuel Management
6. Left and Right Fuel Pumps
7. Fuel Quantity
8. Electric Tachometer
9. Engine Gauges
10. Engine Monitor
11. Pilots Turn Coordinator
12. Landing Gear Indicator Lights
13. Hydraulic Pump Control
14. Hydraulic Pump Power
15.
One Communication Transceiver
16. One Navigation receiver.
17. Speaker Amplifier
18.
One Transponder
19. Compass
20. Avionics Cooling Fan
21. Any other equipment that may be
essential for flight operations