Two more Chinese carriers—Air China and China Southern Airlines—have formally filed for compensation from Boeing over the grounding of the 737 MAX 8, joining China Eastern Airlines, which reportedly filed a claim May 21.

Boeing’s reimbursements to airlines for 737 MAX-related service disruptions will approach $1.4 billion, assuming the grounded fleet is back in service by October, according to Bloomberg analysts.

Airbus is studying potential efficiency gains in its production system and what level of vertical integration makes sense in the future.

American Airlines is confident that two stakeholder gatherings in the coming days will help provide clarity on when the Boeing 737 MAX fleet will be cleared to fly again, a top executive said.

Russia’s Alrosa Airline on May 20 operated its final flight using the Tupolev Tu-134B, the last of the type used in Russia for scheduled commercial passenger service.