Yak 18T Flight Operations Manual
Page 26 of 82
Disclaimer: This manual is to be used as a reference only, it is based on translated Yak 18T Flight Operations
Manuals and has not been approved by the Yakovlev Design Bureau or any other authority.
Check the engine controls –
103.
CHECK
the motion of the thrust lever from idle to fully open
104.
CHECK
the action of the pitch control lever
105.
CHECK
that the carburettor heat control lever can be easily moved (after
checking stop heating by placing the lever fully upwards)
106.
CHECK
the opening and closing of the cowling gills and radiator shutters,
ENSURE
that the control wiring does not jam and that the cowling gills and
radiator shutters are closed and open when you expect them to be –
CHECK
VISUALLY
:
do not expect that everything is fine just because the control
levers feel normal. If the gills are not opening and closing freely, then it is
possible to loosen the equipment by squirting aviation lubricant in the
cowling joints on the front of the cowling, being careful not to disconnect the
small springs connected to some of the gills
107.
ENSURE
that the
FUEL SHUT-OFF VALVE
is pushed as far forward as it
will go. i.e. fuel is not cut off
108.
Now
OPEN
the air system valve by turning it fully to the left and –
a.
CHECK
air pressure in the main and emergency cylinders which must be 50
±5 kgf/m²
b.
PROPER
functioning of the landing split flap-operating mechanism (its
extension and retraction) and
CHECK
the proper state of the warning light.
To do this, move the flap lever to the position
RETRACT
(counter pressure is
to be created) and then to the
EXTEND
position and control the flap
extension by means of a red indicator FLAP EXTENSION on the panel which
will
LIGHT UP
at this moment. Then
RETRACT
the flap, to do it
SET
the
flap lever to the position
RETRACT
and on making sure it has been retracted
from a red indicator light
FLAP EXTENSION
which will go
OUT
on the
panel, place the flap lever in the
NEUTRAL
position.
c.
NOTE:
if the air pressure is low, you may omit this step for now, until the
engine is operational and the air pressure is being recharged
109.
CHECK
air-tightness of the braking system, fully apply the brakes and
ENSURE
that no noise or hissing of air can be heard. Leave the brakes in
the
ON
position and continue the checks in the next section 5.1 Start
Preparation
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