What should be avoided when the brakes are hot in an aircraft equipped with multiple-disk type brake assemblies?

When brakes are hot in aircraft equipped with multiple-disk type brake assemblies, setting the parking brake should be avoided. The reason for this is that hot brakes can expand due to increased temperatures, and applying the parking brake at this time could cause the brake disks to bind or become stuck. This situation can lead to brake damage or malfunction, and in some cases, difficulty in releasing the parking brake later.

Additionally, applying the parking brake while the brakes are hot does not allow for proper heat dissipation, which can exacerbate wear or thermal shock. It's essential to ensure that the braking system cools down appropriately to maintain the integrity and functionality of the brakes for future operations.

Other actions, such as adjusting brake pressure or engaging the hydraulic system, do not present the same immediate risks associated with hot brakes, and performing routine checks should be done with caution, focusing on required maintenance rather than potentially damaging practices.