De Havilland Canada's time building the Dash 8-400 turboprop in Downsview is coming to an end as the company plans to indefinitely pause production, but is leaving the door wide open to start again to begin a new for a post-COVID-19 rebound in demand. The fourth rock from the sun is slated to become the solar system's second planet to host a powered flight. Perseverance and Ingenuity arrive on Mars on February 18. As single-aisle jets like the Airbus A321XLR take on roles once assigned for long-range twins, the more narrow cabin is going to be a battleground for increasingly complex passenger systems in the fight against commodification.