An executive for Pratt & Whitney, the RTX-owned company that makes the jet’s F135 engines, told reporters Tuesday that the Engine Core Upgrade program’s preliminary design review is expected to take place in May 2024.
That is later than the company originally predicted last fall, when it said the review was scheduled for January 2024 [...]
In a statement to Defense News on Friday, the F-35 Joint Program Office said the design review is “event driven” and has not been delayed, but that it is taking a closer look at the engine upgrade.
“We have added a senior-level engineering and technical review to the schedule, which will take place in the February/March time frame,” the JPO said. “The JPO, in conjunction with our industry partner [Pratt & Whitney], continues to mitigate risk as we work toward the PDR [preliminary design review].”