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Trajectories

As someone whos researched my share of aviation accident reports over the years, its frustrating to dissect those reports and pick out the various missteps made and the points at which a change in direction, a precautionary landing or other mitigation would have altered the outcome. Loyal readers of this journal understand that aviation accidents arent preordained and, instead, often result from a complex series of events occurring over time. Its often called the accident chain, a term recognizing how these events are linked. Often, individual events occurring in an accident chain, by themselves, would not result in a new accident report. The accident chain concept has great value, but Ive come to think of it as a trajectory instead of a chain.

Gemini Sparkle

Key Takeaways:

  • The article reframes "staying ahead of the airplane" as managing its "trajectory," which involves understanding the aircraft's position, momentum, and the critical fourth dimension of time, distinguishing flight from terrestrial travel.
  • Pilots must manage both short-range trajectories (tactical tasks like checklists and clearances) and long-range trajectories (strategic flight goals like the overall journey plan, climb, or descent).
  • Effective trajectory management demands continuous anticipation of the aircraft's future location, with shorter, more intense planning intervals required as the flight progresses and nears the ground, underscoring professional airmanship.
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Staying ahead of the airplane is a concept we often hear about from instructors or in hangar-flying sessions. On one level, it’s self-explanatory: Pilots need to understand where the airplane is, where it’s going and when it’s going to get there. The accident record is littered with examples of why this need exists, and evidence that pilots don’t always meet it.

As someone who’s researched my share of aviation accident reports over the years, it’s frustrating to dissect those reports and pick out the various missteps made and the points at which a change in direction, a precautionary landing or other mitigation would have altered the outcome. Loyal readers of this journal understand that aviation accidents aren’t preordained and, instead, often result from a complex series of events occurring over time. It’s often called the accident chain, a term recognizing how these events are linked. Often, individual events occurring in an accident chain, by themselves, would not result in a new accident report. The accident chain concept has great value, but I’ve come to think of it as a trajectory instead of a chain.

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