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Home Academy Conjunctions & Collision Avoidance Screening windows
LESSON 03 OF 6

Screening windows

Beginner ~10 min Slide deck Free

A screening window defines the look-ahead period in which an operator checks for conjunction events. The standard window is 7 days.

A screening window defines the look-ahead period in which an operator checks for conjunction events. The standard window is 7 days.

What this lesson covers

Why 7 Days?

The 7-day horizon is a balance between warning time and prediction accuracy.

Alert Lifecycle by the Numbers

The final 24 hours before TCA see the most CDM volatility — Pc can drop from 1-in-1,000 to negligible as fresh tracking arrives.

False Alarms & Alert Fatigue

The flip side of wide screening thresholds is volume. Operators face alert fatigue when screening catches thousands of low-risk events.

A screening window is an alert horizon, not a danger period.

Most events in the window self-resolve. The skill is knowing which ones warrant escalation — and when.

All lessons in Conjunctions & Collision Avoidance
01What a conjunction is~9 min02Miss distance + uncertainty~9 min03Screening windows~10 min04Avoidance maneuvers~9 min05Headlines vs reality~9 min06Interpret risk calmly~9 min
← Miss distance + uncertaintyAll 6 LessonsAvoidance maneuvers →
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