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Hawker 850XP Pro Line 21 Airplane Flight Manual
Page 15
Sub-section - 5.05
GENERAL
FAA Approved
Original Issue: Feb 28, 2006
Wet Runway
A runway is considered as wet when it is well soaked but without significant areas of standing
water. A runway is considered well soaked when there is sufficient moisture on the runway
surface to cause it to appear reflective.
Climb Gradient
The ratio expressed as a percentage:
The gradients shown on the charts are true gradients i.e. they are derived from true (not
pressure) rates of climb.
FLIGHT IN ICING CONDITIONS
In severe icing conditions, ice can build up on unprotected parts of the airplane causing buffeting
and increased drag which can occur at normal certificated operating speeds.
Procedures and speeds associated with these conditions are included in Sub-section 4.10 -
NORMAL PROCEDURES (ICING CONDITIONS).
WIND COMPONENT/CROSSWIND
A graph to convert wind velocity into a headwind or tail wind component is given in Figure 5.05.5.
Operation In High Surface Winds
If the wind speed at a height of 33 feet (10.1 meters) exceeds 20 knots and has a tail wind
component, 70% N
1
should not be exceeded on the ground except during takeoff.
When complying with the above, the following conditions shall be met during takeoff:
1. The brakes are released before 70% N
1
is reached.
2. The thrust is advanced smoothly so that full thrust is achieved at an airplane speed of
approximately 15 Kts ground speed.
Maximum Demonstrated Crosswind
The maximum crosswind component in which the airplane has been demonstrated to be
satisfactory for takeoff and landing is 30 knots measured at a height of 33 feet (10.1 meters)
above the runway surface. The demonstrations were made with both engines operating and
controllability was not found to be limiting. In strong crosswinds, into-wind aileron should be
used.
Critical Engine
In a zero crosswind takeoff there is no critical engine. In a crosswind takeoff, the airplane has
normal weathercock stability and tends to yaw into wind. Therefore the critical engine is that on
the upwind side.
Change in height
Horizontal distance travelled
x 100%
For Training Purposes Only