CAPE CANAVERAL, Fla. - Boeing's crew capsule rocketed into orbit Thursday on a repeat test flight without astronauts, after years of being grounded by flaws that could have doomed the spacecraft.
Only a test dummy was aboard. If the capsule reaches the International Space Station on Friday and everything else goes well, two or three NASA test pilots could strap in by the end of this year or early next for the company's first crew flight.
It's Boeing's third shot at the high-stakes flight demo.
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At least this time, Starliner made it to the proper orbit, quickly giving chase to the space station. But the all-important rendezvous and docking loomed.
Starliner's first test flight in 2019 was stricken by software errors so severe that the capsule ended up in the wrong orbit and had to skip the space station. The spacecraft came close to being destroyed as ground controllers hastily cut short the mission.
After dozens of safety fixes, Boeing returned a different capsule to the launch pad last summer. Corroded valves halted the countdown, resulting in another round of repairs.
The drawn-out test flight program has cost Boeing about $600 million.
'We're not going to fly (crews) unless we feel like we've bought down the risk,' NASA space operations chief Kathy Lueders stressed on the eve of liftoff.
Boeing is seeking redemption as it attempts to catch up with SpaceX, NASA's other contracted taxi service. Elon Musk's company has been flying astronauts to and from the space station for two years and delivering cargo for a full decade.
Eager to reduce its high-priced dependency on Russia for crew transport, NASA hired Boeing and SpaceX to launch astronauts to the space station after the shuttle program ended in 2011. That's why it's so important for Boeing's Starliner to succeed, said NASA Administrator Bill Nelson.
'We always, in this case, want to have a backup,' Nelson told The Associated Press hours before liftoff.
Different in looks but similar in function to SpaceX's Dragon capsule, Boeing's fully automated capsule will attempt to dock at the space station on its own. Station astronauts will be ready to steer the capsule by remote control, if necessary.
Starliner will spend close to a week at the space station before aiming for a touchdown in the New Mexico desert.
NASA has yet to finalize which astronauts will be on the first Starliner crew. The program is so far behind that the original three have stepped aside. The leading candidates gathered at Cape Canaveral for the evening launch of Starliner atop United Launch Alliance's Atlas V rocket.
'We're thrilled for this because the next one is us,' said astronaut Butch Wilmore.
Besides Rosie the Rocketeer - a space-age version of World War II's Rosie the Riveter - the capsule is carrying groceries and spacewalking gear for the seven station residents. U.S. spacewalks have been on hold since an astronaut's helmet took on water in March. NASA is sending up extra absorbent pads for use in helmets, in case an emergency spacewalk is required as the investigation continues.
Boeing also is flying mementos from historically black colleges and universities and tree seeds similar to those Apollo astronauts took to the moon that became so-called moon trees here on Earth.