Boeing's CST-100 Starliner atop an Atlas 5 rocket before launch of the Crew Flight Test mission in June 2024. Credit: NASA/Joel Kowsky

WASHINGTON — Boeing is still working with NASA to determine when to fly its CST-100 Starliner commercial crew vehicle on a cargo mission to the International Space Station.

In an earnings call July 28 to discuss the company’s second-quarter financial results, Kelly Ortberg, president and chief executive of Boeing, described Starliner as the last of a set of fixed-price contracts in the company’s defense and space unit that the company is working to get on track after cost overruns.

“The one program we have work yet to do with the customer on is commercial crew, or the Starliner program,” he said after discussing work on several military aircraft and drone programs.

Starliner has not flown since the Crew Flight Test mission two years ago, which suffered thruster malfunctions and helium leaks. NASA elected to bring the spacecraft back uncrewed, with the two NASA astronauts who traveled to the International Space Station on that spacecraft remaining in space for nine months before returning on a SpaceX Crew Dragon.