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apple developer account:System glitch prompts Boeing to postpone test space flight

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,FILE PHOTO: The Atlas V rocket carrying Boeing's CST-100 Starliner capsule is seen after the launch to the International Space Station was delayed for a do-over test flight in Cape Canaveral, Florida, U.S. July 30, 2021. REUTERS/Joe Skipper/File Photo

(Reuters) -Boeing Co on Tuesday scrubbed the launch of its CST-100 Starliner capsule to the International Space Station due to an unexpected system glitch, in the latest setback following the vehicle's botched 2019 debut.

It was not immediately clear whether the launch would be rescheduled for Wednesday.

During pre-launch preparations, Boeing engineers detected "unexpected valve position indications" in its propulsion system, Boeing said in a statement. The problem was detected during checks after electrical storms in the region, Boeing added.

"We're disappointed with today's outcome and the need to reschedule our Starliner launch," said John Vollmer, the program's manager. "Human spaceflight is a complex, precise and unforgiving endeavor, and Boeing and NASA teams will take the time they need to ensure the safety and integrity of the spacecraft and the achievement of our mission objectives."

The Starliner capsule loaded with supplies had been scheduled to have blasted off atop an Atlas V rocket flown by the United Launch Alliance, a partnership of Boeing and Lockheed Martin Corp, at 1:20 p.m. EDT (1720 GMT) from Space Launch Complex-41 at Cape Canaveral Space Force Station.

The launch had been planned for last Friday https://www.reuters.com/lifestyle/science/space-station-mishap-prompts-nasa-postpone-launch-boeing-starliner-2021-07-29, but was postponed by NASA after the space station was briefly thrown out of control with seven crew members aboard, a mishap caused by the inadvertent reignition of jet thrusters on a newly docked Russian service module. Russia's space agency blamed a software glitch.

Tuesday's planned uncrewed mission was intended as a precursor to crewed flight potentially to be conducted before the end of the year. It was the latest setback for a U.S. aerospace giant reeling from back-to-back crises - a pandemic that crushed demand for new jetliners and a safety scandal caused by two fatal 737 MAX crashes - that have damaged Boeing's finances and engineering reputation.

Boeing and NASA teams were assessing the situation, Boeing said.

United Launch Alliance, a tie up between Boeing and Lockheed Martin Corp, was removing propellant from the Atlas V rocket, NASA said in a statement. "Pending resolution of the forward work, our next available launch opportunity would be 12:57 p.m. EDT on Wednesday, Aug. 4," NASA added.

The Starliner capsule headlined Boeing's efforts against billionaire entrepreneur Elon Musk's SpaceX to be the first to return NASA astronauts to the space station from U.S. soil in nearly a decade.

But a series of software glitches during the December 2019 debut launch resulted in its failure to dock at the orbital laboratory outpost. SpaceX's Crew Dragon has gone on to launch three crewed space station missions since 2020, with a fourth scheduled as early as Oct. 31, according to NASA.

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