Embraer EMB145 Operation Manual page 237

ENGINE START
Either engine 1 or engine 2 may be started first. However, the
following considerations are important before the engine start:
− Starting engine 1 during towing operations: to avoid damage to
the nose landing gear while towing, disengage the steering. The
steering is disengaged through the steering disengage button on
the control wheel. For airplanes Post-Mod. SB 145-32-0057 the
steering is disengaged alternatively on ground. Refer to AOM
sections 1-12-10 and 2-12-15 for details.
− Single engine taxi: the gust lock lever was designed to allow extra
travel for one of the thrust levers. The gust lock extra travel is only
adjustable for airplanes Post-Mod. SB 145-27-0115 or with an
equivalent modification factory incorporated. In this case, the pilot
may choose the thrust lever to have extra travel.
− Logistic regarding passengers boarding and ground personal
clearance, according to local authority allowances.
− For engine start using APU or LPU, refer to AOM section 1-2-81.
Start/Stop Selector........................................................ START, THEN
Turn the start selector to RUN for 2 seconds, then turn the switch to
the START position momentarily (signals the initiate start sequence
to the FADEC) and then to RUN, and start the stopwatch.
Increase in N2............................................................... CHECKED
Verify increase in N2 RPM within 10 seconds of start selection.
Make sure N2 accelerates normally.
Ignition is activated when N2 is at approximately 14% N2. Fuel is
injected when N2 is at approximately 31.5% (28.5% for airplanes
equipped with FADEC B7.4 and on) or 12 seconds after ignition is
activated.
IGN A (B) annunciation................................................. CHECKED
Observe the annunciation IGN A (B) at about 14% N2.
With ignition in AUTO, only the FADEC in control activates the
ignition system. FADEC in control is alternated on every
subsequent ground start. Only one ignition channel is activated on
grounds starts. Ignition channels are also alternated every
subsequent start.
If ignition is set to OFF, FADEC neither activates ignition nor
actuates the fuel valve to open, thus allowing dry motoring.
However, a dry motoring procedure must not be performed if one of
the FADECs is declared incapable.
REVISION 41
AIRPLANE
OPERATIONS
MANUAL
Copyright © by Embraer. Refer to cover page for details.
NORMAL PROCEDURES
RUN
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