What is the maximum cockpit differential pressure that the delta P regulator monitors to send a signal to the safety valve?

The correct answer is based on the specific design and functioning of the delta P regulator in the T-6B cockpit pressure control system. The delta P regulator is essential for maintaining a safe cockpit environment by monitoring the differential pressure between the cockpit and the outside atmosphere.

The maximum differential pressure that the regulator monitors is set at 3.6 psi. When the cockpit pressure exceeds this threshold, the delta P regulator sends a signal to the safety valve to ensure that the pressure is reduced to prevent structural damage or hazards associated with excessive differential pressure. This safety feature is crucial as it helps maintain the integrity of the aircraft's cabin and ensures the safety of the crew.

Understanding the specific value of 3.6 psi in this context is important for ensuring proper operation and system functionality, as it reflects the engineered limits defined by the aircraft manufacturers.