The S3 harness is a harness with a modern design, which can be used with or without airbag, which serves pilots in training and tandem passengers. Being the third generation of his family.

It has a dorsal adjustment system, which provides comfort in long periods of flight. It has an airbag below the seat that meets safety needs and is easy to remove if necessary. The S3 harness, when used for tandem flight, facilitates passenger operation in all phases of the flight. On takeoff, ease of running and sitting down, and on landing, ease of standing up out of the seat without discomfort.