Embraer says its fourth E190-E2 prototype has officially joined the test team with a two-hour flight last week. The petite Brazilian twin is the most refined of the four siblings and will be used specifically for interior tests: cabin evacuation, environmental comfort and internal noise. The three aircraft already in testing have accumulated 650 flight hours, and Luis Carlos Affonso, COO of Embraer Commercial Aviation, says the advanced certification tests–high speed flying qualities, flutter, natural ice and cold soak reliability–are coming soon.
Source: avwebFourth Embraer E190-E2 Prototype Joins Flight Test Fleet