Airplane Factory SLING 4
Pilot Operating Handbook
Page | 7-31
DC-POH-001-X-C-3
Revision : 1.3
4
With loss of power to the TCU, the waste gate servo is not powered
and will remain in its last commanded position. Boost pressure control is
not available and limited flight operation is applicable.
EFIS back-up battery / circuit
The 12 V EFIS back-up battery is mounted on the cabin side of the firewall,
under the instrument panel. The EFIS back-up circuit can be operated
independently from the main bus (i.e. with the master switched off).
Master switch
The master switch connects the electrical system / main bus to the 12 V
main battery and charge (regulator / rectifier output) system (via the
charge system relay). Refer to paragraph 7.19.1.
Ignition/magneto and starter switches
Ignition / magneto switches and starter switch are incorporated into a key
switch mounted on the instrument panel. Refer to paragraphs 7.12, 7.19.1
and 7.19.2.
Both ignition / magneto switches should be ON (key in BOTH position) to
operate the engine.
NOTE
The engine ignition system is independent of the aircraft electrical
system and will operate even with the master switch and / or any
circuit breaker(s) off. The engine requires adequate power supply to at
least one fuel pump to remain operational (to prevent stoppage due to
fuel starvation).
Summary of Contents for SLING 4
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