Boeing Co. took a hefty $6.5 billion charge on its all-new 777X jetliner as it posted a record annual loss on Wednesday due to the coronavirus pandemic and the aftermath of a two-year safety crisis over its 737 MAX. The results cap a tumultuous year for the world’s largest aerospace company during which the pandemic erased demand for the industry’s largest jetliners just as Boeing fights to emerge from the nearly two-year grounding of its best-selling 737 MAX after fatal crashes. Boeing said it now expects the 777X, a larger version of the 777 mini-jumbo, to enter service by late 2023, three years later than initially planned, with a longer and costlier certification process after scrutiny over the 737 MAX. Boeing is making “prudent design modifications” to the 777X, including hardware changes to the actuator control electronics, in response to regulator expectations, Boeing Chief Executive Officer Dave Calhoun told analysts. …