Yak 18T Flight Operations Manual
Page 37 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.
this position until the aircraft rotates naturally upon the increase in airspeed. NOTE:
DO NOT raise the nose wheel too high. The aircraft typically ROTATES as follows –
• with take-off weight 1,650kg IAS of 135km/h
• with take-off weight 1,500kg IAS of 125km/h
• what have you calculated it to be, given your load?
• After rotation, INCREASE IAS to 160-170km/h for a gradual climb. NOTE: just
after rotation, with the airspeed rising, the aircraft tends to quickly increase the pitch-
up angle, be ready to COMPENSATE for this with the trim
• You may have been trained to take-off in a different way, i.e. as above, but upon
rotation, level the nose to the horizon at about 30ft, with the undercarriage still
down, so as to gain the maximum amount of airspeed without climbing and then to
perform the climb out upon sufficient IAS. If you HAVE been trained in this way
then fine, if not, continue with the gradual climb approach. Do not attempt this
approach UNTIL you have received SUFFICIENT TYPE TRAINING. Also be aware
that this approach may infringe your local circuit procedures so CHECK first
• At an altitude of at least 10m (~35ft) RETRACT the undercarriage. To do this,
perform the following procedure –
• MOVE the undercarriage lever to the RETRACT/UP position, take care NOT to
retard the lever to the NEUTRAL position
• CHECK that the undercarriage has RETRACTED by noting the illumination of
the RED indicator lights on the undercarriage display panel
• CHECK that the undercarriage has RETRACTED by noting that the port wing,
cowling and starboard wing undercarriage indicator SIGNALS have lowered into
the airframe
• once SATISFIED that the lights and indicators are correct and that the
undercarriage has been retracted, SET the undercarriage lever to the NEUTRAL
position
By the time the undercarriage has been retracted and an altitude of ~300ft has been
achieved, ALTER the engine conditions from the take-off regime to the Nominal I regime
for the climb to circuit height –
• ACHIEVE a crankshaft rotational speed of 82%-84% by first reducing the propeller
pitch and then by reducing the throttle to achieve the desired rpm. This action is to
be carried out swiftly
The climb is to be performed –
• at IAS of 170km/h at ambient temperatures up to +20°C
• at IAS of 180km/h at ambient temperatures over +20°C
• carry out the usual 500ft CHECKS
CAUTION
• CONTINUOUS engine running in the take-off regime is NOT to exceed 5 minutes
7.3. Cross-Wind Take-Off
• The peculiar feature of this take-off is the necessity to DEFLECT the yoke into WIND
from the very beginning of the take-off run
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