What is an essential preflight check for aircraft systems?

Inspecting fuel and oil levels is a critical component of the preflight check for an aircraft. Ensuring that the fuel tanks have adequate fuel is necessary for a safe flight, as running out of fuel mid-flight can lead to engine failure and possible emergency situations. Oil levels are equally important; insufficient oil can result in engine overheating, increased wear, or even engine failure. Therefore, confirming that both fuel and oil levels are within acceptable limits is essential for the aircraft's operational readiness and safety. This preflight inspection supports not only the functionality of the aircraft but also the safety of the pilot and passengers on board.