Dave Calhoun, Chairman Boeing.Adam Jeffery | CNBCBoeing CEO Dave Calhoun on Wednesday said that he was “optimistic” that need for new aircraft, ravaged from the coronavirus pandemic, could begin rebounding from the second half of following year.Cancellations of Boeing airplanes are outpacing new orders this season since airways reel from the effect of the virus along with the organization’s key 737 Max stays grounded. Boeing submitted a $2.4 billion loss for its second quarter of this year. It’s also likely to decrease output and cautioned about the potential for greater job reductions.”There’s a client calling us daily with a desire to need to reevaluate and also to take care of the difficult environments they are addressing,” Calhoun said in a interview on CNBC’s “Squawk on the Street.”Boeing said it intends to postpone till 2022 that a ramp-up of 737 manufacturing to 31 per month, after than a prediction to accomplish this next year. It is going to also cut output signal of its own 787 wide-body airplane to six per month from 10. It’ll produce two 777 airplanes a month from five the business said.Calhoun said he anticipates that an uneven recovery in the pandemic for drivers around the globe and which carriers that appear healthy may want to obtain an edge over rivals with newer airplanes, driving requirement.”China, Europe appear to get a bit more control over their surroundings compared to U.S. does in the present time,” Calhoun said. “It will happen and I think someplace, based on a vaccine as well as the achievement and supply of a vaccine, someplace in the second half of next year I am optimistic that this worm turns.”Boeing shares were down more than 4% on Wednesday morning.