TBM
PILOT’S OPERATING HANDBOOK
700
SECTION 4
NORMAL PROCEDURES
EASA Approved
Page 4.4.26
Edition 1 -- November 30, 2010
Rev. 0
AMPLIFIED PROCEDURES
STARTING ENGINE USING
EXTERNAL POWER (GPU) (3/7)
Monitor increase of :
-- ITT
(max. ITT
±
870
°
C for 20 seconds max.
. . . . . . . . . . . . .
±
1000
°
C for 5 seconds max.)
The absolute limit read on the indicator is 1090
°
C during the
starting sequence (red triangle). However, the ITT limits during
the starting sequence are :
. 870
°
C for 20 seconds max.
. 1000
°
C for 5 seconds max.
In case of higher temperature and longer time, stop immediately
the starting procedure as indicated in the following caution and
inform the maintenance department.
This starting engine procedure must be also applied in case of
drop in voltage supplied by GPU. This drop will be shown by a
low or zero Ng acceleration.
If
starting
engine
procedure
is
aborted
further
to
overtemperature indications (max. ITT : 870
°
C for more than
20 seconds -- 1000
°
C for more than 5 seconds), maintaining
during few seconds ”STARTER” switch ON (within starter
operating limits) may reduce max. ITT obtained by ventilating
combustion chamber.
NOTE :
No action is required for the following conditions :
-- ITT from 800
°
C to 870
°
C limited to 20 seconds,
-- ITT from 870
°
C to 1000
°
C limited to 5 seconds.