Which of the following is included in the basic steps of aircraft calibration?

The basic steps of aircraft calibration encompass a variety of critical procedures to ensure that the aircraft's systems operate correctly and efficiently. This includes the measurement of flow rates, which is essential for determining how fluids such as fuel and oil are distributed throughout the aircraft's systems. Understanding flow rates is vital for assessing fuel efficiency and the performance of engine components.

Additionally, evaluating distribution patterns is also crucial. This involves checking how effectively resources like fuel or air are distributed across the aircraft, ensuring that weight distribution and system operations are optimized for performance and safety.

Testing for drift is another integral part of the calibration process, as it helps in identifying whether any instruments or sensors are deviating from their expected performance. Drift can lead to inaccurate readings, which could compromise aircraft safety and efficiency.

Since each of these processes—measurement of flow rates, evaluation of distribution patterns, and testing for drift—forms an essential component of a comprehensive calibration procedure, the correct answer is that all of these steps are included in the basic calibration process. This highlights the holistic approach necessary for maintaining aircraft performance and safety.