Aviate, Navigate, Communicate
The first priority in any emergency is simple: fly the aeroplane. Pilots are rigorously trained to follow the mantra “Aviate, Navigate, Communicate.” Before anything else, the remaining crew must ensure the aircraft is under control and flying on a safe
flight path. If one pilot becomes incapacitated, the other pilot takes full command, physically securing the other crew member if necessary to prevent any interference with the controls. Once the aircraft is stable, the next phase begins, but the decision of where to land is never made in isolation.
A Team on the Ground Springs to Action
While the pilot is handling the situation in the air, a dedicated team on the ground is already working the problem. Every major airline runs an Operations Control Centre (OCC), the nerve center responsible for monitoring every flight. The moment a pilot indicates a problem, often by transmitting a special transponder code like 7700 for a general emergency, the OCC and Air Traffic Control (ATC) are immediately alerted. This doesn't just clear the airwaves; it triggers a coordinated response. The OCC, staffed with experienced dispatchers, maintenance experts, and meteorologists, becomes a critical resource for the pilot. They work in tandem with the flight crew, providing vital information and helping to weigh the complex options ahead.
The Safest Airport, Not the Nearest
A common misconception is that a plane in trouble will always head for the closest runway. While proximity is a factor, the primary goal is to find the most suitable airport, and that involves a detailed checklist. The first consideration is the runway itself. Is it long enough for the specific aircraft type to land safely, especially if it's overweight from being full of fuel intended for a much longer journey? Another critical factor is the weather at potential diversion airports. Landing in a thunderstorm or heavy fog would only add another layer of risk. The decision is a careful calculation of risk, balancing the urgency of the situation with the safety of the landing conditions.
Emergency Services and Support
Beyond the runway, the flight crew and airline dispatchers must consider what happens after the plane lands. A key question is the availability of Aircraft Rescue and Firefighting (ARFF) services. An airport with a robust emergency response team is heavily prioritized. Furthermore, logistical support is crucial. An airline will prefer to divert to an airport where it has its own maintenance staff and ground crew. This ensures that any technical issues can be addressed promptly and that passengers can be cared for and rebooked on other flights with minimal disruption. Landing at an unfamiliar airport without this support can complicate the situation significantly for everyone involved.
Making the Final Decision
With input from the OCC and real-time guidance from ATC, the pilot-in-command makes the final call. Air Traffic Control will give the emergency aircraft top priority, clearing other planes out of its path and providing a direct route to the chosen airport. The pilot has the ultimate authority to deviate from any previous flight plan or instruction to ensure the safety of the flight. This coordinated effort between the cockpit, the airline's operational base, and air traffic controllers ensures that even in the most stressful situations, decisions are based on a comprehensive assessment of all available information, aimed at one single outcome: a safe and uneventful landing.
