It must not have been a Max. The title shows 737-900 which uses a standard CFM 56 engine. If it was a Max, it would have been designated 737-9 MAX, which uses the CFM LEAP engine.
Yes thank you. I had just looked.
That CFM 56 engine seems to be a pretty good engine.
IIRC it’s what the TACAMO planes we’re upgraded with years ago?
I saw them flying out of Tinker last time I was there a few years ago