US Investigates Diversion of Sensitive F-35 Stealth Components to Hong Kong

US lawmakers and the Pentagon are investigating an incident in which a shipment of sensitive F-35 Lightning II fighter jet components, including a cockpit canopy coated with stealth radar-absorbent materials, was unexpectedly diverted to Hong Kong. The parts were being transported from Australia to the United States for repairs by an intermediary working for Lockheed Martin. While there is no public evidence that Chinese authorities have accessed the components, the diversion to a Chinese special administrative region has raised significant national security and reverse-engineering concerns.

// Background

The F-35 Joint Strike Fighter relies on a complex multinational supply chain where spare parts are managed in a shared global pool. Although Australia serves as a regional Indo-Pacific maintenance hub operating 72 F-35As, it currently lacks the capability to repair cockpit canopies, requiring items to be shipped to the US. The diversion occurs amid historical concerns over Chinese espionage targeting F-35 data, as well as past Government Accountability Office findings that flagged chronic visibility and inventory-tracking issues across more than one million spare parts.

// Key Developments

• A shipment of unserviceable F-35 components en route from Australia to the US for repairs was rerouted across the Pacific to Hong Kong.
• The diverted items reportedly include an F-35 cockpit canopy coated with specialized radar-absorbent stealth materials.
• The Pentagon's F-35 Joint Program Office confirmed the shipping issue and is collaborating with industry partners to retrieve the parts and implement safeguards.
• The House Armed Services Committee and other national security committees have received multiple briefings on the incident.
• The incident underscores ongoing supply-chain tracking vulnerabilities highlighted by past GAO audits reporting over one million missing F-35 spare parts.