NTSB Pauses Release of UPS Crash Audio Over AI Reconstruction

The National Transportation Safety Board (NTSB) has temporarily suspended public access to most of its investigation dockets following revelations that advanced artificial‑intelligence methods can recreate cockpit voice recordings from still image representations known as spectrograms.

In the November 2025 crash of UPS flight 2976, an engine detached from the left wing during takeoff, resulting in the deaths of all three crew members and 12 people on the ground. The NTSB released a docket that included thousands of pages, video footage and a transcript of the cockpit voice recorder (CVR). Included in the public docket was a spectrogram image that visually mapped the audio frequencies recorded by the CVR.

Researchers and members of the public soon discovered that the spectrogram could be processed with AI tools to approximate the audio of the pilots’ conversations during the 30‑second window before the aircraft crashed. The reconstructed audio, posted online, raised privacy concerns and threatened to undermine the integrity of ongoing investigations.

In response, the NTSB temporarily pulled the UPS flight docket and all other investigation documents from its public docket system. The board cited federal law that prohibits the release of CVR material and the need to protect the privacy of accident victims and the families of crew members. Chief Officer Jennifer Homendy described the situation as “deeply troubling” and called for social media platforms to remove the reconstructed audio.

After an internal review, the NTSB restored public access to most dockets, including the UPS crash, while acknowledging that 41 other dockets remain under evaluation. The agency has not yet released additional safeguards for future investigations, but it is working to prevent the unintentional exposure of sensitive audio data in the age of rapidly evolving AI technology.