Pentagon Halts Upgraded F-35 Deliveries Due to Software Issues.

The US Defense Department will stop accepting some newly built F-35 Joint Strike Fighters beginning next month due to delays in upgrading the fighter's Technology Refresh 3 hardware, which is necessary before the F-35 can receive a more expansive modernization known as Block 4. The TR-3 schedule has slipped considerably, and the F-35 Joint Program Office is now expecting it to arrive no earlier than this December — and perhaps as late as April 2024, a full year behind schedule. This will be the third time in less than a year that F-35 deliveries have been halted.