Pilot's Operating Handbook
Section 4
Normal procedures
EASA Approved
Edition 1 - January 15, 2018
Rev. 2
Page 4.4.25
Engine start 2/3
► Continuing
▲ CAUTION ▲
When THROTTLE is positioned on LO-IDLE before having obtained
13 % of Ng, there is a risk of overtemperature further to an excessive
accumulation of fuel inside the combustion chamber before ignition.
▲
● NOTE ●
In case of starting with high residual ITT, an ITT decrease below 150°C (within
starter operation limits) may allow to stay within the allowed ITT envelope
during startup sequence.
●
When
- Ng about 13 % and,
- ITT below 150°C and,
- time below 20 seconds :
12 - THROTTLE LO-IDLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Abort starting procedure if :
- No ignition 10 seconds after having positioned THROTTLE to
LO-IDLE,
- lights on (max ITT < 870°C for more than 20 seconds,
< 1000°C for more than 5 seconds),
- Ng < 30 % after 30 seconds of starter use,
- Ng < 50 % after 60 seconds of starter use,
13 - THROTTLE CUT OFF. . . . . . . . . . . . . . . . . . . . . . . . . . . .
14 - IGNITION switch OFF or AUTO. . . . . . . . . . . . . . . . . . . .
When ITT < 850°C :
15 - STARTER switch ABORT. . . . . . . . . . . . . . . . . . .
End of procedure ■
ITT
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