Yak 18T Flight Operations Manual
Page 36 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.
Section 7 - Flying
7.1. Take-off Preparation
Prior to requesting clearance for take-off, hold the aircraft with the brakes ON and carry out
the following checks –
• CHECK the proper state of the gyro-horizon. The aircraft is cleared for take-off only
if the gyro-horizon is OPERATIONAL (i.e. actually operational for at least 3 minutes)
• CHECK that the compass reading CORRESPONDS to the take-off heading (when
was the last time the compass was re-aligned?)
• CHECK that the landing split flap is RETRACTED
• CHECK propeller pitch is SET to the FINE PITCH position (i.e. fully forward)
• CHECK for full and free DEFLECTION of the yoke and rudder pedals
• CHECK elevator trim is NEUTRAL position (a yellow/green light TRIM NEUTRAL on
the panel should be ON)
• CHECK that the cut-outs, switches and circuit breakers on the switch board required
for the flying mission fulfilment are ON
• in case of possible carburettor icing or ice formation in winter, SWITCH the
carburettor heat ON
LOOK around and on making sure that it is clear and that no unexpected aircraft are
approaching, REQUEST a clearance for take-off.
7.2. Take-off and Climb
Upon receiving the appropriate form of take-off clearance, enter the runway and TAXI along
a straight line 3-5m in order to SET the nose wheel straight and over the take-off line,
holding the brakes ON.
Immediately place the engine into the Nominal I regime. Hold the aircraft with the brakes
ON and check readings of the instruments controlling the engine operation. The instrument
readings must be as follows –
• cylinder head temperature 140°C-190°C
• recommended inlet engine oil temperature 50°C-65°C (at least 40°C and not over
75°C) and fuel pressure 0.2-0.5 kgf/cm²)
• oil pressure 4-6 kgf/cm²
• the engine must run without undue VIBRATION or SHAKING
• SWITCH ON the warning indicator DANGEROUS SPEED
On making sure that the engine OPERATES PROPERLY, CLEARANCE has been given and
NO OBSTACLES are present on the runway, you may TAKE-OFF by selecting the engine
TAKE-OFF regime
• SET the CLOCK to the ON position
• RELEASE the BRAKES and by a smooth moving of the thrust lever SET it to the
take-off regime, i.e. fully forward
• DURING the take-off run, keep the yoke in the NEUTRAL position, compensate for
the turns that may be necessary by gradually deflecting the rudder
• when the IAS has reached 80-90km/h, smoothly pull the yoke backwards in order
to RAISE the nose wheel to the take-off position (10-15 cm off the ground) and hold
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