Multiple development problems caused the [[Boeing Orbital Flight Test|first uncrewed test]] to be delayed from 2017 until 2019. Another major delay occurred after Starlinersoftware failederrors prevented Starliner tofrom reachreaching the ISS during that flight. A [[Boeing Orbital Flight Test 2|second uncrewed test flight]] attempt in 2021 was scrubbed due to serous valve problems found before launch, and the next attempt in 2022 was then successful and met all flight objectives. This enabled the scheduling of the crewed test flight.<ref>{{Cite web |last=Howell |first=Elizabeth |date=3 May 2024 |title=Boeing's Starliner is ready to fly astronauts after years of delay. Here's what took so long. |url=https://www.space.com/boeing-starliner-delays-not-frustrating-1st-iss-launch |url-status=live |archive-url=https://web.archive.org/web/20240606103635/https://www.space.com/boeing-starliner-delays-not-frustrating-1st-iss-launch |archive-date=6 June 2024 |access-date=10 June 2024 |website=Space.com |language=en}}</ref> However, Boeing announced in August 2023 that it would be delayed to no earlier than March 2024 due to problems with the strength of certain joints within the [[parachute]] system and concerns over the potential for combustion of the wiring harnesses. As a result, Boeing underwent multiple investigations before another flight test would be permitted.<ref>{{Cite news |last=Berger |first=Eric |date=7 August 2023 |title=Starliner undergoing three independent investigations as flight slips to 2024 |url=https://arstechnica.com/space/2023/08/starliner-undergoing-three-independent-investigations-as-flight-slips-to-2024/ |url-status=live |archive-url=https://web.archive.org/web/20230807235238/https://arstechnica.com/space/2023/08/starliner-undergoing-three-independent-investigations-as-flight-slips-to-2024/ |archive-date=7 August 2023 |access-date=7 August 2023 |work=Ars Technica}}</ref>
