
POH
AQUILA AT01-200C
Section 7
AIRCRAFT DESCRIPTION
Document Nr.:
Issue:
Supersedes Issue:
Date:
Page:
FM-AT01-1010-106
A.01
--- (first issue)
02.03.2020
7 - 19
7.14 ELECTRICAL SYSTEM
The AT01-200 is equipped with a 12 V direct current (DC) electrical system that is
powered by 2 engine-driven alternators and a battery. When the two
ALT1 / BAT
and
ALT2 / BAT2
split master switches are engaged, the electrical equipment can be
operated and controlled by rocker switches located on the lower left section of the
instrument panel. All electrical circuits are protected by circuit breakers that are
accessibly arranged on the right hand section of the instrument panel.
The two engine ignition lines are independent of the aircraft power supply system.
7.14.1 Power Supply and Battery System
The 12 V lead-acid battery (capacity depending on type installed) is connected to the
electrical system of the aircraft via a 50-amp circuit breaker and the
BAT
switch. With
the engine operating, the battery is charged by a 40-amp alternator that is equipped
with an internal regulator and protected by the 50-amp alternator (
ALT1
) circuit breaker
and by a 20-amp Alternator with external regulator and protected by the 20-amp
alternator (
ALT2
) circuit breaker. The alternator
ALT1
is air-cooled and driven by a V-
belt drive geared down from the propeller shaft.
ALT2
is directly driven by the Propeller
shaft.
If one alternator regulator fails, one of the red alternator warning lights
ALT1
or
ALT2
located in the annunciator panel will illuminate.
The charging current of the battery as well as the produced current of the alternators
are monitored by the BAT, ALT1 and ALT2 amperemeters in the MVP-50P-AQ which
also displays aircraft voltage level. In an emergency, the battery is able to supply all
essential electrical equipment for at least half an hour, provided that the battery is
correctly maintained and in a good condition.
7.14.2 Ignition System and Starter
The engine is equipped with 2 electronically controlled ignition systems that have two
independent ignition circuits. The ignition system is activated by the ignition switch. An
internal control unit interrupts the ignition if the propeller speed drops below 100 RPM.
With the ignition key in the R or L position, an ignition circuit is deactivated. In the BOTH
position, both ignition circuits are active. When the key is turned to the START position,
the starter motor is activated. When the key is released it returns to the BOTH position
and the starter is disengaged.
Further information for engine operation and pre-flight checks are contained in the
Operator’s Manual for all versions of ROTAX
®
914 engines.