Google spent $10 million at a bankruptcy auction to buy Spirit Airlines' corporate records — including the confidential employment and training data of thousands of airline crews — and now pilots and flight attendants are asking a federal court to block the deal before their private information feeds Big Tech's AI machine.

The stakes are straightforward: airline workers reported safety concerns and mistakes under promises of confidentiality. If those records can be packaged and sold off to the highest bidder the moment an airline goes under, the voluntary safety programs that keep American skies safe collapse with them.

The Allied Pilots Association, representing 16,000 American Airlines pilots, filed an objection Tuesday with the US Bankruptcy Court for the Southern District of New York. More than 700 of those pilots formerly worked at Spirit, and their confidential records are in the dataset Google is buying.

"To permit that information to later be sold to a third-party without ensuring complete deidentification and satisfactory confidentiality protections will serve to threaten the voluntary safety and training programs that provide the backbone of the commercial aviation industry in the United States," the APA filing stated.

The union warned the deal "threatens to have a chilling effect across all commercial airlines," because crews participate in voluntary safety programs with the expectation their information stays confidential.

The scale of the data grab is enormous. According to Simple Flying, the dataset includes roughly 100 million emails, 500 million Microsoft Teams items, more than 175,000 employee records going back to 1986, and operational records covering over 763,000 flights and five million crew pairings.

The Air Line Pilots Association and the Association of Flight Attendants-CWA have also filed objections. ALPA asked that safety records be excluded entirely from the sale — even if deidentified — including data on fatigue management, the Aviation Safety Action Program, Flight Operations Quality Assurance, and Line Operations Safety Assessments. These programs let pilots report errors and safety concerns without fear of company discipline or FAA enforcement. They are how the industry catches problems before they become disasters.

Google has said the sale includes Spirit's internal data and custom software but not customer or credit card information, and claims the data would be scrubbed of identifying information. Spirit declined to comment. Google did not respond to a request for comment, Business Insider reported.

Notice who's missing from this fight: regulators. A Big Tech monopoly is buying up the confidential employment records of American workers through a bankruptcy fire sale, and the only pushback is coming from the unions. Where is the FTC? Where is the FAA? The silence tells you whose interests Washington protects.

The court now has to decide whether a bankrupt airline's promise of confidentiality dies with the company — and whether Google's AI ambitions trump the privacy rights of the workers who kept those planes flying.