Which P3 port does the OBOGS utilize?

The On-Board Oxygen Generating System (OBOGS) in the T-6A primarily utilizes the left P3 port to draw in the engine bleed air needed for oxygen generation. This design choice is significant because it ensures that the OBOGS operates efficiently while also optimizing the distribution of engine bleed air within the aircraft's systems.

Using the left P3 port specifically helps to centralize and streamline the oxygen supply to the pilot and ensures that any potential contamination or issues that may occur on one side of the aircraft can be managed effectively. Knowing which P3 port the OBOGS uses is vital for understanding the aircraft's emergency procedures and for maintaining the overall function of the oxygen system.