Aviation Engineer Pleads Guilty to Smuggling Trade Secrets to China

Junjie Zhang caught at airport with confidential aviation documents on personal devices

Apr. 2, 2026 at 1:48am

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A 57-year-old aviation engineer from Tulsa, Oklahoma named Junjie Zhang pleaded guilty in federal court to lying to Customs agents about carrying confidential and proprietary documents from his employer, a Wichita aviation company, on his personal devices while attempting to board a flight to China. Prosecutors said the stolen trade secrets were worth over $100,000.

Why it matters

The case highlights the ongoing threat of intellectual property theft, which costs U.S. companies billions in losses each year. While hacking is a common method, insider threats from rogue employees with access to sensitive data also pose a major risk that companies and law enforcement must vigilantly monitor.

The details

In 2019, Customs and Border Protection agents stopped Zhang at a Dallas airport as he was about to board a flight to China. When agents asked if he had any work-related information on his personal devices, Zhang initially said no. However, a search of his devices revealed documents marked 'Proprietary' and 'Confidential' related to his employer's aviation work. Zhang then changed his story, claiming his employer had authorized him to have the files, but the company later confirmed he had no such permission.

  • In 2018, Zhang's employer reported him to the FBI after he behaved suspiciously during a work trip to China.
  • On April 1, 2026, Zhang pleaded guilty to making a false statement.
  • Zhang is set to be sentenced on July 23, 2026.

The players

Junjie Zhang

A 57-year-old naturalized U.S. citizen originally from China who worked as a senior material and process engineer at a Wichita aviation company.

U.S. Attorney Ryan A. Kriegshauser

The lead federal prosecutor in the case, who emphasized the Department of Justice's efforts to safeguard American companies' intellectual property from theft.

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What they’re saying

“Americans invest heavily into technological research and development. Intellectual property theft causes U.S. companies across numerous sectors to lose billions of dollars a year. Often, that cost ultimately falls on consumers. Not only are Internet hackers a risk for this theft, but so are insider threats from rogue employees.”

— Ryan A. Kriegshauser, U.S. Attorney

What’s next

The federal district court judge in Kansas City will decide Junjie Zhang's sentence on July 23, 2026 based on U.S. Sentencing Guidelines and other statutory factors.

The takeaway

This case underscores the growing threat of intellectual property theft, which can come not just from external hackers but also from insiders with access to sensitive data. Companies and law enforcement must remain vigilant in protecting trade secrets and proprietary information from being stolen and smuggled overseas.