Page 2-21
Pilot’s Operating Manual
Revision A1: Nov, 2002
Sub-section 2
PREFLIGHT
Hawker 800XP Pro Line 21
Section IV - FLIGHT PLANNING DATA
Additional Holding Allowance
On some routes an additional holding allowance will be needed at the destination.
EN ROUTE ALLOWANCE
A contingency allowance, usually in the form of a percentage of sector fuel, may be added to the
reserves. A typical figure is 5%.
Total NBAA IFR Reserve Fuel
As a rough guide, Total NBAA IFR reserve fuel including 200 nm diversion and 35 minutes holding at
5000 ft, will be 1500 lb for a Zero Fuel Weight of approximately 17,500 lb.
ICING CONDITIONS
• Climb - The effect of climbing through a 10,000 feet icing layer is to increase the normal climb time
by up to 1.5 minutes. The effect on sector fuel and time does not exceed 50 lb or one minute.
• Cruise - Fuel flow is increased by approximately 100 lb/hr up to 25,000 feet and by approximately
150 lb/hr at higher altitudes.
• Descent - The penalty in fuel for descending through a 10,000 feet icing layer is 100 lb. There is
no significant effect on distance.
