Boeing posts bigger-than-expected Q2 loss as Air Force One costs rise by $280 million

A Boeing 737 MAX aircraft. (AP Photo)Boeing reported a larger-than-expected second-quarter loss on Tuesday as higher costs linked to the delayed Air Force One replacement programme weighed on its results.The US planemaker, however, reported positive free cash flow and maintained its annual guidance as it works to stabilise operations and increase aircraft production.Air Force One programme hits Boeing earningsAccording to news agency Reuters, Boeing took a $280 million charge on the Air Force One replacement programme due to higher engineering costs needed to complete two delayed presidential aircraft by 2028.The charge contributed to a net loss of $428 million in the second quarter.The company reported an adjusted loss of 76 cents per share, wider than analysts' expectation of a 30-cent l