What is the recommended action if the T-6A experiences a chip light on the ground?

When a chip light illuminates on the T-6A while on the ground, it indicates that there is possibly metallic debris in the oil system, suggesting an issue with the engine's internal components. This warning is significant as it could be related to serious mechanical problems that could jeopardize the safety and integrity of the engine.

Executing an emergency engine shutdown is the recommended action in this scenario because it prevents further potential damage to the engine. Continuing operations or attempting to increase engine RPM could exacerbate the situation by causing additional damage or failure within the engine system. Checking fuel levels, while important for overall operational management, does not address the immediate concern of the chip light warning and its implications for engine safety.

Thus, responding with an emergency engine shutdown allows for proper assessment and mitigates the risk of engine failure, ensuring safety for both the crew and the aircraft. This proactive approach is essential when handling warnings related to engine performance.