The National Transportation Safety Board pulled the plug on its entire public docket system on May 21 after discovering that people on the internet had used AI to reconstruct cockpit voice recorder audio from a fatal cargo plane crash. Federal law explicitly prohibits the public release of that audio, but the agency had inadvertently given the internet exactly what it needed to recreate it anyway.
The recordings in question come from UPS Flight 2976, a Boeing MD-11F that crashed shortly after departing Louisville Muhammad Ali International Airport on November 4, 2025. Three crew members and twelve people on the ground were killed. Twenty-three others were injured.
How spectrograms became a backdoor to forbidden audio
Here’s how this happened. The NTSB held a public hearing on May 19-20, 2026, as part of its investigation into the crash. During that hearing, the agency released transcripts and a spectrogram image, a visual representation of audio frequencies over time, essentially a picture of sound.
Internet users fed the spectrogram PDF into AI-powered image recognition and audio synthesis tools, producing approximations of the cockpit voice recorder audio. The reconstructed recordings then spread online.
