How many chains are required for a hot seat evolution ashore?

In a hot seat evolution ashore, the requirement for the number of chains is based on safety and operational efficiency during aircraft operations. Typically, four chains are mandated to secure the aircraft effectively to prevent any movement that may occur during ground handling or maintenance procedures. Having four chains provides sufficient stability and security by ensuring that the aircraft remains securely restrained. This number allows for an even distribution of stress across the chains and enhances safety for personnel working around the aircraft.

While fewer chains might not provide optimum restraint and security, and more could be unnecessary and complicate the procedure, four is established as the standard for this specific operation. This standard is part of proper aircraft handling protocols to ensure both safety and efficiency during operations on the ground.