5-8
Information Manual
Section 5
Cirrus Design
Performance Data
SR22
Fuel Required
The total fuel requirement for the flight may be estimated using the
performance information obtained from Figures 5-14 and 5-15. The
resultant cruise distance is:
• Total distance (from sample problem) ........................ 560.0 NM
• Climb distance (corrected value from climb table)........ 10.7 NM
• Cruise distance (total distance - climb distance) ........ 549.3 NM
Using the predicted true airspeed from the cruise performance table,
Figure 5-15, and applying the expected 10-knot headwind, the ground
speed for cruise is expected to be 147 knots. Therefore, the time
required for the cruise portion of the trip is:
• 549.3 NM/147 knots = 3.7 hours.
The fuel required for cruise is:
• 3.7 hours x 15.3 GPH = 56.6 gallons.
From the 6000 ft Cruise Table (Figure 5-15), a 45 minute IFR reserve
at approximately 55% power requires:
• 45/60 x 15.3 GPH = 11.5 gallons
The total estimated fuel required is as follows:
• Engine start, taxi, and takeoff ................................... 1.5 gallons
• Climb ........................................................................ 2.4 gallons
• Cruise ..................................................................... 56.6 gallons
• Reserve .................................................................. 11.5 gallons
• Total fuel required ................................................... 72.0 gallons
Once the flight is underway, ground speed checks will provide a more
accurate basis for estimating the time enroute and the corresponding
fuel required to complete the trip with ample reserve.
March 2010
