JS-MD 3
Aircraft Flight Manual
MD10-AFM-00-001
Issue: 01
Rev. 00
Rev. Date: 14-Feb-20
Page 3
–6
Excessive sideslip recovery
An excessive sideslip may occur when the pilot applies full cross control
input.
At a slip angle exceeding 20° (approximately 40° on the yaw string)
rudder control forces reverse as the rudder is sucked into the wake of
the stalled fin.
To recover from an excessive slip:
1. Apply opposite rudder against the direction of the yaw.
2. When balanced flight is restored, neutralize both aileron and
rudder.
WARNING:
If an excessive slip angle is not corrected with opposite
rudder input, the secondary effect of yaw may cause the
aircraft to roll and enter a spiral dive. It is not possible to
prevent roll by applying full opposite aileron during
excessive sideslip.
CAUTION:
The rudder control input force required to recover from
a side slip exceeding 20° is high (approximately 20 daN)
and increases if the speed is allowed to build up during
the resulting spiral dive. Apply sufficient rudder input to
recover from the sideslip to prevent spiral dive.
