Originally Posted by
dr dre
X4A operated a MEL-CBR flight today, so whatever problem existed has been sorted.
The problems with the P&W GTF engines had to do with ones were manufactured from 2016-2020 before the “Block D” upgrade, which has solved most of the issues and presumably is incorporated into all
new build engines:
https://airinsight.com/pratt-whitney...th-gtf-in-may/
Positioning for replacement, it won’t fly for a while now.