Yak 18T Flight Operations Manual
Page 46 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.
• While slipping, keep the flight direction using a reference point orientation, check the
speed and keep it according to the nose-over position relative to the horizon and by using
the speed indicator
• CHECK the designated bank by the aircraft inclination relative to the horizon and by the
attitude indicator (gyro-horizon)
• RECOVER the aircraft from slipping by a simultaneous motion of the yoke towards the
side opposite to the bank and slightly forward
• When the bank has decreased, place the rudder pedals in the NEUTRAL position and
maintain a gliding speed of 170km/h
• Dampen the residual aircraft DRIFT after slipping with a return bank. Do NOT allow the
temperature of the cylinder heads to drop below 120°C while slipping
8.9 Slow/Barrel Rolls
• BEFORE entry into this manoeuvre, study the surrounding airspace to make sure that no
other aircraft are flying in proximity of your aircraft, that you will remain clear of cloud,
congested areas and that sufficient altitude is available should the manoeuvre is not
successful. Select the necessary ground reference points for completing the manoeuvre
• To perform a slow controllable roll, SET the indicated airspeed of 230km/h, the engine
crankshaft speed equal to 70% with a full boost
• Then impart a pitch-up angle of 10°-15° and hold this position
• INITIATE a longitudinal rotation by smoothly deflecting the yoke in the direction of the
roll. When 45°-50° of bank has been achieved, proceed to pull the yoke being careful
not to slow the rotation. This is necessary to PREVENT the aircraft from turning when
upside-down and to PREVENT the nose from dropping below the horizon
• After having PASSED the inverted position, with an angle of bank of 40°-50° before
levelling out in order to hold the aircraft relative to the horizon. INCREASE depression
on the rudder pedal for rotation and as the aircraft approaches the 20°-30° banked
attitude, hold the aircraft nose-over position within the horizon line by pulling the yoke
backwards
• As soon as the aircraft approaches level flying attitude, STOP the rotation, SET the
controls to recovery and then to the NEUTRAL position when rotation comes to an end.
The aircraft X-rotation/roll should be a UNIFORM one
• Good rolls should be performed WITHOUT altitude loss. The procedure of making left
and right rolls is the SAME
8.10 Flick/Snap Rolls
• BEFORE entry into this manoeuvre, study the surrounding airspace to make sure that no
other aircraft are flying in proximity of your aircraft, that you will remain clear of cloud,
congested areas and that sufficient altitude is available should the manoeuvre is not
successful. Select the necessary ground reference points for completing the manoeuvre
• To perform a flick roll, SET the indicated airspeed of 190km/h rpm 70% and the
engine boost 650-700mm of Hg.
• Impart a pitch-up angle of 10°-15° to the aircraft and hold this position
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