Roll-out of China’s home-grown passenger jet still up in the air as US tech restrictions expected to persist under Joe Biden

• Concerns are growing over China’s access to key American-made components for the C919 passenger jet, due to a dependency on US exports
• China’s answer to the Boeing-Airbus duopoly on passenger jets still has hurdles to overcome to meet its planned roll-out next year, and not all analysts think it will arrive on time