PSA Airlines announced plans to relocate its corporate headquarters, reports indicate. Wednesday night a flight was involved in a deadly midair crash with a military helicopter.

The American Airlines’ subsidiary has ties that go back decades in Ohio, and just said it was moving its headquarters to Charlotte.

An FAA statement said a PSA Airlines regional jet collided midair with a Sikorsky helicopter. Here’s what to know about the airline.

Heard of PSA? Envoy? SkyWest? Discover the route and planes flown by American Airlines’ regional subsidiaries.

An American Airlines jet carrying 64 people collided Wednesday with a helicopter near Reagan Washington National Airport, with no survivors expected.

“A PSA Airlines Bombardier CRJ700 regional jet collided in midair with a Sikorsky H-60 helicopter while on approach to Runway 33 at Reagan Washington National Airport around 9 p.m. local time,” the Federal Aviation Administration (FAA) said in a statement.

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

American Airlines CEO Robert Isom said that Flight 5342 was on a normal approach to Reagan National Airport and that “we don’t know why the military aircraft came into the path of the PSA aircraft,” one of the many questions the Fort Worth-based carrier is asking in the wake of the tragedy that took 67 lives.

An NTSB-led investigation is in full swing to identify factors that led to the Jan. 29 midair collision between an American Eagle Bombardier CRJ-700 operated by PSA Airlines on approach to Ronald Reagan Washington National Airport (DCA) and a U.S. Army Sikorsky UH-60L Black Hawk helicopter.

A flight crew from Charlotte was onboard a plane that collided with a military Black Hawk helicopter over the Potomac River by Washington, D.C., according to multiple media reports and at least one crew member’s family.. A total of 67 people died — 60 passengers, four crew members on the commercial plane and three people on the military chopper.

An American Airlines plane carrying 60 passengers and four crew members collided with an Army Black Hawk helicopter outside Reagan National Airport near Washington, D.C. Wednesday night. A D.C. fire official said Thursday that “we don't think there are any survivors from this accident" and "we are switching from a rescue operation to a recovery operation.

Wednesday night’s crash of an American Airlines commuter plane in Washington could be one of the worst disasters for the Fort Worth-based airline in more than two decades.