FSD International
Commander 115 TC
Pilot Operating Handbook
- 40 –
Copyright© 2008 by FSD International. All rights reserved.
For use with Microsoft Flight Simulator only. Not to be used for real-world aviation.
5 Performance
The performance data in this section are provided so that a pilot may plan his flights with
confidence. The data are based on flight tests of an airplane in good service condition. The
corrections shown for other than standard atmospheric conditions are based upon physical
relationships and conform to accepted practice. Factors which have not been accounted for include
humidity, runway slope, and runway surface condition (wetness, snow, roughness, etc.).
The performance data presented are representative of the general level of performance which can
be achieved with any Commander 115 TC. However, the normal variations inherent in any
complicated manufactured product can cause some differences from one example to the next.
Variations in pilot technique can cause further differences. The condition of the airplane, propeller,
and engine, and the presence of external optional equipment and after-market items can influence
performance. These and other indeterminate variables caused by atmospheric turbulence,
unforecast wind conditions, etc. make it imperative for the pilot to be conservative in his flight
planning.
Use the data for guidance but don't plan a takeoff or landing when only 100 foot excess runway is
predicted or don't plan a trip with less than a ten gallon margin. Pilot training for FAA airman
certification, experience in the particular airplane, good judgment, conservative planning, and
attention to all FAR rules applicable to the flight will contribute to a safe and enjoyable trip.
5.1 COMMANDER 115 TC PERFORMANCE AND OPERATING LIMITATIONS
Engine Management
The turbo-supercharged engine in this particular installation means
simplified engine management is possible at all flight levels. Maximum
continuous cruise power (78%) is available at all flight levels from sea level
to 25,000 ft which is the Commander 115TC's certified ceiling.
Ceiling
Operations above the certified ceiling of 25,000 ft are prohibited.
There are a number of reasons that dictate the certified ceiling in aircraft
certification, some of which are aerodynamic limits but one factor that
becomes critical at high altitudes is the engine's cooling system ability to
dissipate heat in the extremely thin air encountered at high altitudes,
notwithstanding the atmosphere's very low ambient temperatures found at
these altitudes.
Power Settings
The maximum permitted continuous cruise power setting for this engine is
29 In. Hg (manifold pressure boost) at 2400 RPM, which translates to 78%
power. This power setting is available at all flight levels up to the certified
ceiling of 25,000 ft.
Full rated power (37 In. Hg. @ 2575 RPM) may be used until 6000 ft in a
maximum performance climb. However, the long-term use of power
settings above the maximum continuous power rating results in high
engine wear, increased maintenance costs, decreased engine life
expectancy and it results in excessive fuel consumption.
