The MB-339 is now being replaced by the T-345 High Efficiency Trainer, the new basic jet trainer of the Italian Air Force which will gradually replace the entire MB-339 fleet, beginning from the A variant and later continuing with the CD variant. In fact, thanks to its characteristics, the aircraft can be used for the entire training syllabus, from the Primary Pilot Training to the Specialized Pilot Training.

The T-345 will bring multiple advantages. Similarly to the M346, the new aircraft will be part of an integrated netcentric system, which will allow to shrink the time needed for the training while improving its quality and efficiency. The T-345 trainer offers performance typical of a jet aircraft, such as the maximum altitude and speed, with operational costs comparable to the ones of a turboprop aircraft.

The T-345 is equipped with simple and essential onboard systems, which require minimum maintenance and allow the maximum safety and reliability. The Williams FJ44-4M-34 turbofan engine is equipped with a modern digital control system and provides a good thrust with low fuel consumption. The acquisition costs are comparable to the ones of turboprop trainers, allowing a long service life of 15,000 flight hours.

The swept high wing provides a greater maneuverability and an easier recovery from dangerous attitudes, while its profile also creates a higher lift. The aircraft is equipped with the latest technologies, such as touchscreen multi-functional displays, exposing the students to these technologies, similar to the ones of front-line aircraft, early in the training, so they can gradually improve their competencies with such advanced avionics before reaching the OCUs.