Pilot's Operating Handbook
Section 7
Description
Edition 1 - January 15, 2018
Rev. 0
Page 7.6.8
Engine starting - see figure 7.6.4
Ign
ition function
Ignition system consists of an ignition unit and two spark igniter plugs in powerplant,a
three-position IGNITION switch OFF - AUTO - ON located on ENGINE START panel
at upper panel.
Ignition unit supplies, from 28-volt source, high voltage current necessary to spark
igniter plugs. When IGNITION switch is positioned to AUTO, ignition unit supply is
ensured during the engine start.
IGNITION lights on as long as ignition unit is supplied.
Starter function
Starting system consists of STARTER switch located on ENGINE START panel,
starter generator and ignition circuit (Refer to paragraph Ignition function).
Starting procedure is semi-automatic. Setting STARTER switch to ON connects the
starter generator which drives powerplant.
STARTER lights on indicating that the
starter generator is operating.
Starter operation is stopped automatically by the electrical power system once a
sufficient starter-generator speed is reached or after 60 s. The pilot has the capability
to interrupt the start process anytime by setting momentarily the STARTER switch to
the ABORT position.
▲ WARNING ▲
Powerplant starting must be performed by qualified personnel
and following procedures and parameters described in section 4
Normal procedures.
▲
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