Boeing reported a larger-than-expected loss for the second quarter, with the company saying costs tied to its long-running Air Force One program hurt the results. The aircraft maker’s latest earnings added to concerns about how expensive delayed projects continue to affect its financial performance.

A key factor in the quarter was a $280 million charge linked to the Air Force One program. That charge reflects the burden of a project that has been delayed for years and has continued to weigh on Boeing’s bottom line.

The update shows how a single troubled program can have an outsized effect on quarterly results, especially when expectations are already under close scrutiny. Boeing’s wider loss suggests that cost pressures on major contracts remain an important issue for the company.

For investors and industry watchers, the quarter underscores the financial impact of delays and overruns on high-profile aircraft programs. Boeing’s latest report makes clear that the Air Force One project remains a notable drag on earnings.