Which of the following is NOT a condition that would trigger a debriefing event?

The correct choice indicates a scenario that does not necessarily warrant a debriefing event. In-flight emergencies such as a fire in the cockpit, the complete loss of primary flight display (PFD) or multi-function display (MFD), and landing or departing on a taxiway are serious situations that directly impact flight safety and operations, thus requiring thorough debriefing for analysis and learning.

However, an emergency landing on the runway, while serious, may not trigger a debriefing in all cases, especially if it falls within the regular parameters of safe operation without significant abnormalities. If the emergency landing was executed with no additional complications or adverse events affecting safety, it might not be seen as requiring the same level of scrutiny as the other listed scenarios.

In such a context, a debrief is primarily aimed at incidents with considerable operational implications, focusing on reactive measures and safety improvements, which is why this option would not trigger a formal debriefing event under normal circumstances.