Flight Instructors Training Procedures _revised AIC_x

ii.
iii.
Varying the power/thrust at a constant
airspeed.
High power/thrust and low speed.
Varying the power/thrust at a constant
airspeed.
Lower power/thrust and high speed.
4. CRITICAL SPEED
Note:
Propeller will not be feathered during this
demonstration.
,
deflection if yaw is to be prevented.
i. Maintain Vyse and close one throttle.
ii. Maintain balance and wings level.
iii. Select climb power on the operative engine.
Note:
a. More rudder deflection will be required
to maintain balance.
b. More aileron defection will be required
to keep the wings level.
iv. Return to twin engine straight and level flight
at cruise power/thrust and speed.
v.
Note: A reduction of airspeed or an increase
of power will result in an increase of control
deflection to maintain balance with the wings
level.
The largest amount of control deflection and
force will be required at a low airspeed and
high power setting
i. From straight and level flight place the
aeroplane in a trimmed descent at cruising
speed and with a low power/thrust setting.
ii. Follow through on the light controls.
iii. Partially reduce the power/thrust of one
engine and note:
Symptoms of asymmetry are less marked,
leading to the possibility of partial power
failure going unnoticed during a descent with
low power/thrust settings.
iv. Continue to reduce the power/thrust to idling
on the selected engine and note:
Even when one engine fails completely the
visual feel and instrument “asymmetric
symptoms” are not very apparent, during a
high airspeed and low power/thrust
configuration.
v. Return to twin engine straight and level flight
at cruising power/thrust.
i. Lookout.
ii. Complete HASELL checks.
iii. Place the aeroplane in straight and level flight
at approximately 3000’ agl. for an aeroplane
with non turbo-charged engines.
iv. Raise the aeroplane’s nose and reduce
airspeed to Vyse. Select maximum permitted
RPM and manifold pressure on both engines.
v. Gradually close the left throttle and move the
mixture control to idle cut-off whilst
maintaining balance, heading and wings level.
Slowly raise the aeroplane’s nose and allow
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