What indicates that reverse thrust should be applied with caution?

Applying reverse thrust can be an essential part of the aircraft's landing and stopping procedures; however, it must be done with caution under certain conditions. The indication of asymmetrical conditions is particularly critical because these situations can lead to unbalanced thrust being generated by the engines. If reverse thrust is applied while there are significant discrepancies in engine performance or when one engine is producing more thrust in reverse than the other, the aircraft may experience a yawing motion that can compromise control. This can be particularly dangerous during landing roll-out, as it could lead to an unintended deviation from the runway centerline or even a loss of directional control.

While engine temperature increase, low altitude, and unexpected weather changes can also pose risks during landing and stopping, asymmetrical conditions directly relate to the thrust being applied and its effects on aircraft behavior. Addressing asymmetrical thrust promptly can help maintain control and ensure a safe landing.