Which symptoms may warrant an unscheduled landing?

Uncontrolled bleeding and failure to regain consciousness are critical medical symptoms that necessitate an immediate response. Uncontrolled bleeding can lead to significant loss of blood volume, resulting in shock, organ failure, or even death if not addressed promptly. This condition requires urgent medical attention that cannot wait until a scheduled landing.

Similarly, failure to regain consciousness indicates a potentially severe underlying issue, such as a head injury, stroke, or other serious medical conditions that could rapidly deteriorate. Both symptoms clearly identify a situation that exceeds the capacity for in-flight management and requires the aircraft to land as soon as possible to ensure the passenger's safety and proper medical care.

In contrast, persistent pain and minor cuts could generally be managed with first aid, while minor distress and fatigue may not indicate an immediate threat to life. Likewise, passenger complaints and discomfort, though important to address for overall passenger comfort, do not typically warrant an unscheduled landing unless they escalate to severe symptoms. Hence, the specific nature of uncontrolled bleeding and loss of consciousness makes them critical and urgent reasons for an unscheduled landing.