WASHINGTON -- Federal investigators are pointing to concerns with pilot and air traffic control operations and several other issues that likely caused the Maryland medevac helicopter crash that killed four people.
The pilot lacked proficiency in the instrument landing approach he attempted to use when landing, investigators. Also, there were problems with how air traffic controllers handled certain communications.
Fatigue also may have contributed to the pilot's deficient performance, investigators said. Though it was part of an aging fleet, there were no maintenance issues with the helicopter.