If a pilot feels a tumbling or spinning sensation after a night departure, what should they rely on?

In the scenario where a pilot experiences a tumbling or spinning sensation, it is crucial for them to rely on flight instruments. This response is grounded in the principles of aviation safety and situational awareness.

During flight, especially under low visibility conditions such as night departures, visual cues can be misleading. The human body may experience disorientation due to sensory conflicts, particularly when the senses are not providing clear or consistent information about the aircraft’s position or motion. For example, in the absence of adequate visual references, the pilot's inner ear may perceive movement inaccurately, leading to spatial disorientation.

Flight instruments, however, provide objective data regarding the aircraft’s attitude, altitude, speed, and other critical flight parameters. These instruments do not depend on visual cues and therefore allow the pilot to maintain control of the aircraft despite any disorienting sensations. By monitoring these instruments, the pilot can make informed decisions and correct any undesired aircraft movements to ensure safe flight.

Other options, such as trusting intuition or relying on passengers, could lead to enhanced confusion or poor decision-making. Thus, the emphasis on instruments is vital for maintaining control and ensuring a safe flying experience, particularly in challenging conditions where the pilot's sensory perceptions might fail.