A pair of upcoming variants of Boeing's most popular plane, the 737 Max have been further delayed to 2026, CEO Kelly Ortberg confirmed in an earnings call Tuesday. Achieving certification for the Max 7 and Max 10 will be a key benchmark for Ortberg, who is approaching one year at the helm and has been leading Boeing's turnaround.The company had initially hoped the Max 7, the shortest version of the flagship narrow-body jet, would be certified in 2022. However, it has been constrained by work on the engine ...