Day 2 of federal investigation into fatal midair crash of Army chopper, commercial plane opens

The National Transportation Safety Board has opened public hearings on a January midair collision between an Army Black Hawk helicopter and a commercial jet. The crash resulted in the deaths of all 67 people aboard. Investigators found the helicopter was flying higher than it should have been over the Potomac River in Washington. Its altitude readings were not accurate. The helicopter flew above the 200-foot altitude limit before colliding with the plane. The NTSB conducted tests on other helicopters and found similar discrepancies in their altimeters. The investigative hearings continue into day two, focusing on air traffic control and flight procedures.