What is a significant disruption to service?

• A. Airborne holding that would result in delays of 15 minutes or more
• B. Arrival/departure delays of 15 minutes or more
• C. Would result in placing other aircraft in jeopardy of violating 3 hour tarmac delay
• D. No disruption

Answer: (B)

This item tests how we define a significant disruption to service. The key point is that disruption is identified when a flight’s arrival or departure is delayed by fifteen minutes or more. That measurable delay signals operations to activate disruption procedures, adjust resources, rebook passengers, and communicate with customers to minimize cascading effects on the schedule. The focus is on the actual impact to the flight’s timeline, not solely on potential issues that could cause delays.

Airborne holding that would result in delays of fifteen minutes or more can lead to disruption, but the defining trigger remains the actual arrival/departure delay itself. The reference to a three-hour tarmac delay relates to a separate regulatory standard about passenger care on the ground, not the disruption threshold. No disruption is incorrect because we are dealing with a clear schedule impact.