Page 4
FAA Approved
Original Issue: Feb 28, 2006
Sub-section - 5.50
LANDING FIELD LENGTHS
Hawker 850XP Pro Line 21 Airplane Flight Manual
MAXIMUM LANDING WEIGHT FOR LANDING DISTANCE AVAILABLE
(continued)
3.
Figure 5.50.3 gives the effect on landing distance of a very slippery surface having
a braking coefficient of friction of 0.05, and is intended to cover the effect of icy
surfaces and aquaplaning.
Figure 5.50.3 is valid for runways with approximately zero gradient and with no
tailwind. Landing downhill or with a tailwind on a slippery runway should be avoided
if possible.
The limiting combinations of wind and gradient for which Figure 5.50.3 is valid are
shown on Figure 5.50.4. Combinations of wind and gradient lying in the shaded area
are not permitted.
No reduction in stopping distance is credited for the use of thrust reversers and it is
assumed that when thrust reverse is not being used, one engine is shut down after
touchdown to assist deceleration.
4.
If flaps 25° is used for landing, reduce the landing distance available by 10% before
entering Figure 5.50.1.
5.
For a landing with flaps up, reduce the landing distance available by 30% before
entering Figure 5.50.1.
6.
For wet runways, reduce the landing distance available by 15% before entering
Figure 5.50.1.
Instructions for Use of Charts
The broken arrowed lines illustrate the use of the graphs.
To Determine Maximum Landing Weight for Landing Distance Available On Dry Runway.
•
Enter Figure 5.50.1 with the landing distance available and go to the reference line of the
wind correction grid and follow the guide lines to the appropriate wind component.
•
From here move horizontally to the appropriate altitude line and then move vertically down
to the weight scale.
To Determine Landing Distance Required for Other Operational Factor Requirements.
•
Enter Figure 5.50.2 with the Landing Distance Available obtained from Figure 5.50.1 and
go right to the reference line of the desired operational factor. Then move to the bottom
scale to read the equivalent landing distance.
To Determine Maximum Landing Weight for Landing Distance Available On Slippery Runway.
•
Enter Figure 5.50.4 with the runway gradient and reported wind component.
•
Combinations of wind and gradient lying in the shaded area are outside the validity of
Figure 5.50.3 and are not permitted.
Continued Next Page
For Training Purposes Only
