The LM never ending story....
Delays to the TR-3 upgrade have dozens of jets on hold.
www.defenseone.com
Jackson’s squadron is testing a suite of hardware and software improvements, known as Technology Refresh 3, or TR-3, that will be the backbone for
Block 4—the Pentagon’s effort to equip the F-35 for fights in the decades to come. New F-35s are being produced with TR-3 gear—but the Pentagon has stopped accepting them until the hardware can reliably run the current TR-2 software, a spokesman for the F-35 joint program office said.