Chinese authorities are holding onto components from a U.S.-operated F-35 stealth fighter that were mistakenly diverted through Hong Kong while in transit from Australia to the United States, according to people familiar with the matter cited by Bloomberg. The parts have not been returned more than four months after they went missing.
The shipment included a cockpit canopy and a weapons-bay door from an Australian F-35A, both coated with radar-absorbent material that helps give the jet its low-observable, or stealth, profile. The components were classified as unserviceable and were being shipped in late May for inspection, possible repair or disposal, likely from the F-35 sustainment hub at Williamtown, New South Wales, according to The Aviationist. An intermediary shipping contractor, whose identity has not been disclosed, rerouted the parts through Hong Kong instead of their intended U.S. destination.
State Department and Pentagon officials briefed congressional staff on the episode in June, but it did not become public until Politico first reported it on Sept. 18. Australia's government confirmed the shipment two days later. Defence Minister Richard Marles told reporters it was his understanding that the missing shipment did not include sensitive equipment or sensitive parts, even as investigations by the Pentagon's F-35 Joint Program Office, Australia's Department of Defence and congressional national-security committees continue.
Disputed sensitivity, unresolved return
That assessment is contested. Radar-absorbent coatings are considered core to the F-35's stealth characteristics, and lawmakers briefed on the matter have voiced concern that even a damaged canopy could give Chinese engineers useful data on the coating's composition. Program officials note that not every part in the shipment is consequential; some are routine aircraft components common across military airframes, but the canopy in particular has drawn the most scrutiny.
The Pentagon said in a statement that it is aware of a shipment issue of unserviceable F-35 Lightning II components and is working to retrieve the components, investigate the incident and place safeguards against a repeat. Lockheed Martin, the F-35's manufacturer, declined to detail the shipment but said it handles logistics with the utmost diligence and safeguards.
The episode adds friction to an alliance relationship already strained by trade and technology disputes between Washington and Beijing. With the parts still unaccounted for, the Pentagon and Australian officials face pressure to explain how classified-adjacent hardware moved through a commercial shipping network without being flagged, and whether existing safeguards for allied F-35 logistics need an overhaul.
