For a flight from an airport at 4,000 ft with 12 degrees C, how far can you fly in nautical miles?

To determine how far you can fly from an airport at 4,000 feet elevation and a temperature of 12 degrees Celsius, we need to consider several factors related to aircraft performance, particularly the density altitude and the aircraft's specific performance data.

At a standard temperature of 15 degrees Celsius at sea level, the temperature at 4,000 feet (where the temperature is 12 degrees) is actually less than standard. This indicates that the density altitude is lower than the pressure altitude, which typically results in improved aircraft performance due to denser air. As a result, the aircraft will perform better, allowing for a longer flight distance given a full tank of fuel.

The distance that can be flown is closely tied to the aircraft's performance calculations, including lift, drag, fuel consumption, and power settings at specific altitudes and temperatures. For an average small aircraft flying under these conditions, the calculations typically yield a flight distance of around 8 nautical miles.

In this case, while the assessment of the other distances might suggest longer flight capabilities, the specific conditions and aircraft performance at 4,000 feet and 12 degrees Celsius guide us to determine that 8 nautical miles is a more accurate representation of flight performance under these parameters.