1.9 Electrical System
The electric system installed on P92 MkII is characterized by a rated voltage of 13.5 V DC furnished by a generator of 250
W DC. A 12-volts battery with a capacity of 18 Amph furnishes the power needed for aircraft start up and a reserve energy
in case of anomalies to the generator. The generator connected to a regulator/rectifier supplies DC power to the bus bars and
to recharge the battery. A red warning light on the instrument panel will turn on indicating to the pilot that the generator is
not operating. Circuit protection is through breaker located on right side of instrument panel.
The avionic system installed on P92 MkII is based on Garmin G3X touch integrated avionic suite in a dual screen
configuration (GDU 460 or 465). It provides flight information (through GSU 25 that records air, attitude and heading data,
GMU 22 magnetometer and GTP 59 temperature probe) and primary engine information (through the engine module GSA
24).
Stand-alone external COM/NAV sources (Garmin GTR 225A) is installed. The GTX 35R remote transponder unit is installed.
In figure below, the avionic schemes are presented.
.
Fig.1-4 Electrical system schematic
The generator provides DC power also to the following electrical utilities:
1) Fuel pump system
2) Flap actuator
3) Trim tab actuator