What type of oxygen system is not used in the T6A?

The liquid oxygen system is not utilized in the T6A aircraft. This type of oxygen system is typically used in larger aircraft, where significant quantities of oxygen are required for long-duration flights at high altitudes. Liquid oxygen systems can store more oxygen in a smaller volume compared to gas systems, but the T6A is designed for different operational needs that do not include such extensive altitude or duration.

In the T6A, users rely on high-pressure gas systems to provide supplemental oxygen when flying at elevated altitudes, which helps maintain sufficient levels of oxygen for the crew. Continuous flow systems are suitable for the T6A as they ensure a steady supply of oxygen, while pulse demand systems are used in various aircraft for efficiency but are not part of the T6A's configuration. The T6A's oxygen requirements do not necessitate a portable oxygen concentrator, as the existing systems are sufficient for its operational envelope.