Yak 18T Flight Operations Manual
Page 33 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.
•
The engine is considered to be warmed-up, if the temperature of the cylinder heads is
not less than
120°C
, the oil temperature across the engine inlet is not below
40°C
and
the temperature of air getting into the carburettor is not less than
+10°C
•
Once satisfied with the raising oil pressure and temperature, during the remaining period
of the engine warm-up, proceed with the provision of the second half of your passenger
BRIEFING
•
After the engine has been warmed-up,
ALTER
the propeller
PITCH
by moving it twice
from fine to coarse i.e. high to low
•
With the help of the thrust lever
DECELERATE
the engine to minimum rpm
•
CHECK
again to ensure, that the cockpit doors are safely enclosed and locked with the
catch
•
UNLOCK
the undercarriage lever by moving the latch to the left
•
SET
rudder
pedals and the yoke to the
NEUTRAL
position
6.6. Taxiing to the holding point
•
REQUEST
ATC taxi clearance to the hold. Upon clearance, have a good
LOOK
around
and
RELEASE
the brakes
After having received taxi-clearance, the pilot must proceed as follows –
•
APPLY
the brakes and accelerate the engine up to
64%-68%
. At this speed the
aircraft should be
HELD
on the brakes and in position
•
During taxi, perform the differential brake checks but do this
SPARINGLY
. The braking
system of the Yak 18T can
OVERHEAT
with a prolonged application of the braking
mechanism, thus resulting in a complete brake failure on one or both sides of the system.
However, it must be noted that one can taxi reasonably well
WITH MINIMUM BRAKE
USE
•
DECELERATE
the engine to minimum rpm and ensure that no obstacles in the taxiing
direction are present, release the brakes and accelerate the engine smoothly to the
extent
SUFFICIENT
for the aircraft to start motion and proceed taxiing. At night and if
visibility is poor or reduced at day time, switch on lower beam and, if required, the upper
beam of the land/taxi lamp
•
Time of the land/taxi lamp switching-on should not exceed 5 minutes. During taxiing,
hold the yoke in the
NEUTRAL
position, use brakes smoothly and as short duration
pulses. Note: it may be necessary to deflect the yoke
•
The speed of taxiing on a natural surfaced runway should not exceed
15km/h
, on a
concrete runway not more than
30km/h
•
Perform taxiing at a slow speed, observing maximum care if the ground is slush-covered
or rough, the terrain is unknown and obstacles are present nearby. If taxiing on grass,
beware that uneven ground can push the nose wheel into the air, sometimes quite high,
so taxi at what you might think to be too slow a speed on all suspected uneven ground
•
During taxiing at low engine crankshaft speeds, it is advisable to switch off the maximum
number of the power consumers except for the radio station, flashing beacon and ANE
Summary of Contents for 18T
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