ROWLETT, Texas (AP) — Investigators found main rotor impact marks next to a tail boom that separated from a helicopter just before a crash near Dallas, the National Transportation Safety Board ...

Federal investigators say they found main rotor impact marks next to a tail boom that separated from a helicopter just before a crash over Rowlett last month that killed two people. In a preliminary ...

The National Transportation Safety Board (NTSB) is urging immediate and more frequent inspections of Bell 407 helicopters stemming from an accident that took place in Hawaii in June involving a tour ...

The National Transportation Safety Board (NTSB) has urged US and Canadian aviation regulators to require Bell 407 operators to complete immediate inspections of those helicopters’ tail boom attachment ...

The accident has a clear cause, which was identified in the preliminary report. The structure that extends from the back end of the helicopter is called the tail boom, and it includes the tail rotor ...

Future Bell helicopter designs could come with split-tip main rotor blades and anti-torque control provided by a cross-flow fan embedded in the tail boom, rather than a traditional tail rotor, if two ...