I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 205
FOR SIMULATION USE ONLY – NOT A TRAINING AID
WARNING
Improper use of the rudder or ailerons during a slip manoeuvre may cause a
departure from controlled flight with insufficient altitude for recovery.
CAUTION
With the engine out, flaps cannot be deployed prior to extending the landing
gear in a power-off glide because the engine driven hydraulic pump is not
operating.
Once the landing gear have been blown down by the emergency hydraulic
accumulator, the residual hydraulic pressure remaining in the accumulator
may be used to lower the flaps.
Flaps will extend slowly with residual pressure and may take longer than
normal to deploy.
NOTE
Without normal hydraulic pressure, use of the speed brake in a power-off
glide is not possible.
The zero thrust power setting for the aircraft is 4-6% torque at glide speed.
This power setting approximates the performance of the aircraft with the
propeller feathered.
STALL CHARACTERISTICS
STALL WARNING
A stick shaker, activated by the angle-of-attack system, provides artificial stall
warning in each cockpit a minimum of 5 knots before the stall is reached.
The artificial stall warning margin varies from 5 to 10 knots prior to the stall during
power-off, un-accelerated conditions. This margin typically increases during
power-on and accelerated/turning stalls in all configurations.
Natural stall warning, in the form of light aerodynamic buffet, occurs approximately
3 knots before the stall during power-off stalls in all configurations. At the same
time, a slight nose-down pitching motion may also occur.
During accelerated/turning entries into a stall, moderate buffet occurs well prior to
the actual stall.
During un-accelerated, power-on stall entries, there is little perceptible natural
buffet prior to the stall.
During stall entry with power on, the pilot will also notice a higher pitch attitude,
light longitudinal stick forces, and the need for right aileron in conjunction with
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