What is the time frame for the 1-2-3 rule in relation to your Estimated Time of Arrival (ETA)?

The 1-2-3 rule is essential for flight crews to maintain situational awareness and readiness for changes in flight operations surrounding the Estimated Time of Arrival (ETA). The correct time frame, from 1 hour before to 1 hour after ETA, allows pilots and crew members to effectively manage their approach and landing preparations while also considering any potential delays or developments that may arise during the final stages of flight.

By adhering to this specific range, flight crews can ensure they are adequately prepared for landing, coordinated with air traffic control, and able to make informed decisions regarding their flight path and operational status. This proactive approach enhances safety and efficiency in the management of flight operations, contributing to overall operational success.

Understanding this framework is critical for pilots to maintain an effective workflow. The other time frames do not align with the protocols established for maintaining readiness and responding to changes in flight dynamics leading up to arrival.