Foreign operators of the F-35 jet are somewhat dependent on the U.S. for its operation, but not because of a "kill switch" or direct control mechanism. The dependency arises from the jet's reliance on U.S.-managed systems for maintenance, software updates, and spare parts. The F-35 is a highly advanced and complex aircraft, with millions of lines of code and integrated systems like the Autonomic Logistics Information System (ALIS) and its successor, Operational Data Integrated Network (ODIN).
These systems are essential for the jet's functionality, ensuring that it remains operational and up-to-date. Without access to these updates and logistical support, the aircraft could face challenges in maintaining its full combat capabilities. This has raised concerns among some foreign operators about their strategic autonomy when using the F-35