J-20S Twin-Seat Stealth Fighter

The J-20S is a twin-seat variant of the Chengdu J-20 fifth-generation stealth fighter, representing the world's first operational two-seat stealth aircraft design. It is optimized for network-centric operations, electronic warfare, and commanding unmanned combat aerial vehicles (UCAVs) in manned-unmanned teaming scenarios.

Developed by Chengdu Aircraft Industry Group under AVIC, the twin-seat J-20 variant conducted its maiden flight in October 2021. The program was officially designated as the J-20S during its public debut at the Zhuhai Airshow in November 2024. By adding a second cockpit for a weapon systems officer, the PLA aims to manage the high cognitive workload of drone swarm control and complex electronic battlespaces. This development underscores China's strategic focus on manned-unmanned teaming (MUM-T) and advanced airborne battle management.