The Dutch airline KLM Cityhopper is currently worried about the Embraer E195-E2 fleet, because up to eight of them cannot be used due to off-hours checks of the engines.
According to Air Data News, only six out of 14 units are currently in use. The background is that the Pratt & Whitney PW1500G engines have to be checked unscheduled. This type is also used in the competitor model, the Airbus A220, and led to exceptional tests there as well.