"We hit the bull's-eye," a Boeing spokesman said on a livestream of the landing.
The landing will yield the mission's most valuable test data after failing to meet its core objective of docking to the space station.
Starliner's three main parachutes deployed just 1,600 metres from the Earth's surface after enduring intense heat from the violent reentry through the atmosphere, plummeting at 25 times the speed of sound.
The CST-100 Starliner capsule was successfully launched from Florida on Friday, but an automated timer error prevented the spacecraft from attaining the correct orbit for it to meet and dock with the space station.
Boeing and NASA officials said they still do not understand why software caused the craft to miss the orbit required.
The Starliner's debut launch to orbit was a milestone test for Boeing. The company is vying with SpaceX, the privately held rocket company of billionaire high-tech entrepreneur Elon Musk, to revive NASA's human spaceflight capabilities. SpaceX carried out a successful unmanned flight of its Crew Dragon capsule to the space station in March.
The Starliner setback came as Boeing sought an engineering and public relations victory in a year punctuated by a corporate crisis over the grounding of its 737 MAX jetliner following two fatal crashes of the aircraft. The company's shares dropped 1.6% on Friday.
Sunday's landing marked the first time a U.S. orbital space capsule designed for humans landed on land.
All past US capsules, including SpaceX's Crew Dragon, splashed down in the ocean. Russia's Soyuz capsules and China's past crew capsules made land landings.
The now-retired Space Shuttle glided in like a plane.
LEAVE A COMMENT Your email address will not be published. Required fields are marked*
Florida, Carolinas count the cost of Hurricane Ian
At least 23 killed in Russian missile strike in Ukraine
FAA says Boeing has not completed work needed for 737 MAX 7 approval
Hurricane Ian makes landfall along Florida Gulf Coast
Florida scrambles to prepare as Hurricane Ian churns toward coast
US warns Russia of ‘catastrophic consequences’ if it uses N-weapons
CIA’s in-house museum adds new spy exhibits
Pharoah Sanders, cosmic jazz saxophonist, dead at 81
NASA scraps Tuesday Moon launch due to storm