Section 5 Pilot’s Operating Handbook
Performance EXTRA 500
The total cruise distance can be calculated using the above
results:
Total trip distance: 939 NM
Climb distance: -36.5 NM
Descent distance: -31.5 NM
Total cruise distance: 871 NM
With a ground speed of 184.6 kt, the cruise time is:
871 / 184.6 = 4.72 hours
The cruise fuel flow is 85 l/hr, making the cruise fuel:
85 x 4.72 = 401.1 l (719.8 lbs)
4 Reserve
A 45 min. reserve at 45% torque in FL0 (conservative) and
ISA +6 °C:
0.75 h x 86 l/hr = 64.5 l (115.7 lbs)
5 Total Fuel Required
The total estimated fuel amount required for taxi, takeoff,
climb, cruise, descent and reserve therefore is as follows:
Engine Start, Taxi and Takeoff: 10 l (17.9 lbs)
Climb: 34.1 l (61.2 lbs)
Cruise: 401.1 l (719.8 lbs)
Descent: 11 l (19.7 lbs)
Reserve: 64.5 l (115.7 lbs)
The total required usable fuel is: 520.7 l (934.4 lbs)
Note The total fuel required is well within the fuel available.
5-8 26. January 2011
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