What does the acronym IROP stand for in airline terminology?

• A. Irregular Operations
• B. Interim Required Onboard Procedure
• C. Integrated Route Optimization Program
• D. Inoperative Runway Obstruction Policy

Answer: (A)

Disruptions to the normal flight schedule trigger a specific term in airline operations. IROP stands for Irregular Operations, the label used when events like weather, equipment issues, or air-traffic constraints cause delays, cancellations, or reroutes. Activating an IROP sets in motion contingency procedures such as rebooking passengers, arranging hotel or ground transportation, adjusting crew rosters, and communicating changes to affected parties. The other options don’t fit standard aviation terminology: Interim Required Onboard Procedure would imply a temporary onboard step rather than a disruption category; Integrated Route Optimization Program sounds like a routing software tool rather than a disruption term; Inoperative Runway Obstruction Policy describes a specific policy about obstructions, not the general concept of schedule-disrupting events.