Which of the following does the Primary Engine Data Display (PEDD) NOT provide?

The Primary Engine Data Display (PEDD) in the T-6A provides critical information regarding the engine performance, giving pilots vital parameters they need to monitor during operation. It includes readings such as torque, which indicates the engine's output, Np (propeller speed), which shows the propeller's rotation speed, and ITT (Interstage Turbine Temperature), which is crucial for assessing engine temperature at various stages of operation.

Oil pressure, while an essential parameter for engine health, is actually shown on the Secondary Engine Data Display (SEDD) instead of the PEDD. Therefore, the key aspect here is understanding that the PEDD focuses primarily on the performance indicators directly related to engine output and operational efficiency, rather than the broader parameters that involve lubrication systems, like oil pressure. This distinction clarifies why oil pressure is not included in the PEDD, making it the accurate choice in this context.