Boeing CH-47 flies with T408
 

https://www.geaviation.com/press-rel...on-t408-engine

Chinook with GE Aviation’s T408 engines flew and its start of a five year program between the army and GE, that could expand the capabilities of future Chinook heavy-lift missions.

cheers

SAS, the article is interesting in that it rather emphasizes the flight testing to come, not mentioning that it has been flying on another helicopter platform for five years as of next month.