DALLAS — Mesa Airlines (YV), a key regional carrier partner for United Airlines (UA) under the United Express brand, has completed an important fleet transition by retiring all Bombardier CRJ-900 ...

Skies were clear. A few minutes before the Canadian-made Bombardier CRJ-700 series twin-engine jet was to land, air traffic controllers asked Flight 5342 if it could use a shorter runway.

The National Transportation Safety Board said Tuesday that it was examining new data that could put the helicopter above its flight ceiling of 200 feet (61 meters). The airport’s air traffic ...