Embraer EMB145 - Page 238

NORMAL PROCEDURES
AIRPLANE
O
PERATIONS
MANUAL
1-02-23
Page
2
Code
01
REVISION 41
Copyright © by Embraer. Refer to cover page for details.
AOM
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1
4
5/1
114
FT/ITT ...........................................................................CHECKED OFF
Observe the fuel flow and ITT indications raise at about 31.5% N2
(28.5% for airplanes equipped with FADEC B7.4 and on).
For airplanes equipped with FADEC older than B8.0, there is no
automatic shut-down by the FADEC for an overtemperature on
start. FADEC B8.0 and on has an automatic shut-down as an
backup protection. Independently of the FADEC version, the pilot
must keep his hands on START/RUN/STOP switch and manualy
abort the engine start if necessary.
IGN A (B) annunciation.................................................CHECKED OFF
Verify the annunciation IGN A (B) go OFF at about 57% N2.
The start cycle ends at approximately 57% N2, which can be
observed when IGNITION A or B annunciation on EICAS
disappears. After start is completed, engine stabilizes at about
64% N2 and 24% N1.
Engine parameters........................................................CHECKED
Verify that the engine stabilizes at about 64% N2 and 24% N1.
Verify ITT, fuel flow and oil pressure for normal indications.
CAUTION:
ABORT THE ENGINE START BY SELECTING THE
START/STOP SELECTOR TO STOP IF AN ABNORMAL
ENGINE START IS DETECTED.
NOTE: - Light-ups at 28% N2 will be achieved with systems meeting
minimum performance requirements. If light-ups are
occurring below 28%, the airplane should be scheduled for
maintenance to avoid disruptions to passenger service.
- If light-ups are occurring later than 5 seconds after the first
fuel flow indication, the airplane should be scheduled for
maintenance to avoid disruptions to passenger service.
- If the light-up occurs between 5 and 10 seconds after the first
fuel flow indication, smoke and a momentary flash of
combustion may be produced.
- Routine operations may continue subsequent to any light-up
achieved within 10 seconds after the first fuel flow indication.
Repeat the procedure for the other engine.
If any starting limit is exceeded prior to aborting a start, do not attempt
further starts and report to the maintenance personnel.
If a hung or no start occurs, accomplish the Dry Motoring Procedure
before attempting another start.