General knowledge: explain the system before selecting a response
Aeronautical general knowledge connects aircraft behaviour with the pilot's actions. Begin with the forces: lift acts approximately perpendicular to the relative airflow, drag opposes motion through the air, thrust comes from the propulsion system and weight acts toward the earth. In steady, unaccelerated flight these forces balance, but they need not be equal during a manoeuvre. A change in bank, speed, power or load changes what the wing and engine must provide.
A stall is an angle-of-attack problem. An aircraft can reach its critical angle of attack at different indicated airspeeds depending on loading and manoeuvring. An increased load factor raises the stall speed relative to the same aircraft in unaccelerated flight. Warning cues and recovery actions must therefore be understood rather than reduced to one memorized number. Follow the approved aircraft procedure and training; adding power alone does not remove an excessive angle of attack.
Understand how the aircraft obtains information. The pitot system senses impact pressure, the static system senses ambient pressure and their combination supports airspeed indication. The altimeter and vertical-speed indicator rely on static pressure. Blockages can create misleading indications, so compare instruments and use the approved abnormal procedure. A magnetic compass also has limitations during acceleration and turning. One instrument should not be accepted uncritically when other reliable evidence disagrees.
Aircraft performance is conditional. Weight, centre of gravity, air density, runway surface, wind and obstacles all influence the takeoff or landing problem. A heavier aircraft generally requires more lift and performance distance. A centre of gravity outside the approved envelope is not corrected simply by choosing a longer runway. Calculate the loaded condition using the aircraft's own data, checking both total weight and the distribution of that weight. Include fuel consumption when it materially changes the balance.
Finally, remember that the pilot is part of the system. Fatigue, illness, alcohol, medication, stress and hypoxia can undermine perception and judgement. Task fixation can make an otherwise manageable problem dangerous. Prioritize aircraft control, navigate to a safe outcome and communicate as workload permits. Use checklists as structured verification, not as a reason to stop looking outside. The strongest written answer usually explains the physical cause of a symptom and selects the action that addresses that cause.