Airplane Factory SLING 2
Pilot Operating Handbook
Page | 9-17
DC-POH-002-X-B-6
Revision : 2.6
The TCU controls two indicator lights mounted on the instrument panel. When
supply voltage is supplied to the TCU (master switch is switched on) the TCU
is subjected to a self-test. Both the BOOST and CAUTION lights should
illuminate for 1 to 2 seconds and then turn off. If not, this indicative of a
deficiency and the engine should not be taken into operation before the
problem has not been identified and rectified.
TCU LIGHT INDICATIONS
POSSIBLE CAUSE
Maximum
admissible
boost pressure exceeded.
Full
throttle
(115%)
operation
exceeded
maximum duration of
5 minutes.
Sensor failure, wiring failure,
TCU failure, possible airbox
leak.
BOOST
LIGHT
INDICATION
Illuminates steadily.
Blinks.
CAUTION LIGHT
INDICATION
Blinks.
NOTE
Boost pressure will not be
reduced
automatically.
Limited
operation
as
boost control may be
unavailable
or
insufficient.
Boost pressure will not
be
reduced
automatically.
Limited operation as boost
control may be unavailable or
insufficient.
ACTION
Use throttle lever to
reduce boost pressure
manually
to
within
operating limits.
Use throttle lever to
reduce boost pressure
manually
to
within
operating limits (at least
maximum
continuous
values).
The BOOST light resets
when
the
throttle
setting is below the
108% position for a
minimum of 5 minutes.
Use throttle lever to reduce
boost pressure manually to
within operating limits.
When supply voltage to the TCU fails the waste gate servo (and thus the
waste gate flap) will remain in its last commanded position. Boost pressure
regulation is not available and limited flight operation is applicable.
Summary of Contents for Sling-2
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