By definition, an aircraft accident includes the following except?

An aircraft accident is a defined event that typically involves specific criteria related to safety incidents involving aircraft operations. The core aspects of an aircraft accident encompass fatalities, injuries, or damage to the aircraft, which are all critical indicators of serious incidents.

The correct response indicates that "self-injury, natural causes, stowaway hiding" does not fit the definition of an aircraft accident. Self-injury does not pertain to the operational status or integrity of the flight itself; rather, it refers to individual actions that occur outside the context of the accident itself. Natural causes may involve health-related events but aren't directly related to the operational safety or mechanical failure of the aircraft. The concept of stowaway hiding might imply unlawfulness or security breaches, but it doesn’t inherently denote that an accident has occurred in relation to flight safety.

In contrast, the other options concerning fatalities, sabotage, and even scenarios where the aircraft becomes missing clearly relate to adverse conditions affecting the aircraft’s operation and can contribute to a larger context of an accident scenario as recognized by aviation authorities. The nuances concentrating on injuries and damage demonstrate the importance of understanding the boundaries defining an event as an aviation accident, with a strong focus on seriousness and safety implications concerning flight operations.