Aviation Paris Airshow 2019 day two: Boeing is back; more orders for Airbus; sustainable aviation pledge from Big Seven Updated : June 19, 2019 03:48 PM IST Top aerospace companies commit to meeting stricter carbon dioxide reduction targets in the future. Boom Aerospace wraps up ground testing for the Mach 2.2 demonstrator XB-1, may unveil it by December. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.