At what PSI does the overpressurization safety valve open in the T-6A?

The overpressurization safety valve in the T-6A opens at 4.0 PSI. This specific pressure is designed to ensure that the system operates within safe limits, preventing any potential for damage or failure that could occur due to excess pressure. The proper functioning of the safety valve is critical, as it protects against overpressurization scenarios that may lead to system malfunctions or hazards during operation.

For those studying the T-6A's operational safety features, understanding the significance of the 4.0 PSI release point not only reinforces the knowledge of how the aircraft's systems are safeguarded but also emphasizes the importance of compliance with operational limits to ensure safety and reliability during flight.