@nbcchicago: The NTSB says live video from NBCLA helicopter that crashed in Chatsworth, California, could be key to determining what happened. Investigators called the recording “probably the most important evidence” recovered so far, saying it captured sounds consistent with the helicopter’s engine changing speed and possible advisory tones. The video and audio will undergo further analysis as the NTSB investigates the deadly crash. #ntsb #nbc #losangeles #chopper #planecrash

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Wednesday 16 September 2026 20:55:00 GMT