Refer to figure.
In order to find the True Airspeed (TAS) from the performance table:

1. On the left side of the table, locate the Outside Air Temperature of -25°C.
2. Draw a line upwards from the point of outside air temperature of -25°C until the the Pressure Altitude of 8500 ft (slightly higher than the Pressure Altitude line of 8000 ft).
3. From that point draw a line towards the right until it reaches the midpoint between the 55% and 65% power lines (60% power setting).
4. From that point draw a line downwards and read a TAS of 85 kt.

A power setting of 55% corresponds to a Fuel Flow of 17 l/h, and a power setting of 65% corresponds to a Fuel Flow of 20 l/h. A power setting of 60% is midway between 55% and 65%, so the Fuel Flow will be midway between 17 l/h and 20 l/h.

• (17 + 20)/2 = 18.5 l/h