U.S. regulators are investigating why Delta Air Lines failed to recover as quickly as other airlines from a global technology breakdown and whether Delta's treatment of passengers stranded by ...

Delta Air Lines is also unwilling to pay tariffs on ... Last month, the department opened a similar probe into the national security impact of imports of medium-duty and heavy-duty trucks and ...

US Opens National Security Probe Into Imported Commercial Jets ... leased planes and deferring aircraft deliveries. Delta Air Lines is also unwilling to pay tariffs on aircraft deliveries.