The National Transportation Safety Board said the helicopter’s cockpit voice recorder didn’t capture key directions from air-traffic control and is investigating whether the crew might have seen a ...

CTA has since reduced the maximum authorized speed on the Yellow Line from 55 mph to The NTSB said a slippery black substance found on top of the rails at the crash site was confirmed by ...

The helicopter’s black box voice recorder has also been recovered with no signs of exterior damage, according to Inman. The NTSB has begun interviewing air traffic control personnel, which will ...

The agency also gave other updates on its investigation, including plans to have a complete transcription of the communications among the aircraft and traffic controllers available Sunday, NTSB member ...

The agency also gave other updates on its investigation, including plans to have a complete transcription of the communications among the aircraft and traffic controllers available Sunday ...