
A SpaceX Falcon 9 rocket experienced a rare upper stage malfunction on July 11, 2024, during a Starlink satellite deployment mission, resulting in the loss of 20 satellites. The failure occurred approximately 65 minutes after liftoff from Vandenberg Space Force Base when the second stage’s liquid oxygen leak prevented the spacecraft from reaching their intended orbit at 350 km altitude, instead stranding them in a degraded orbit at just 135 km.
SpaceX CEO Elon Musk confirmed that a liquid oxygen leak in the Falcon 9’s upper stage Merlin vacuum engine caused excessive ice buildup, preventing the engine from achieving its planned second burn. The Rapid Unscheduled Disassembly (RUD) event marked the first Falcon 9 failure in over seven years. Despite ground teams attempting to raise the satellites’ orbits using onboard ion thrusters, atmospheric drag at the low altitude proved too strong, dooming all 20 satellites to atmospheric reentry within days.
The Federal Aviation Administration immediately grounded all Falcon 9 flights pending investigation, affecting over 40 scheduled missions worth an estimated $2 billion. This includes critical NASA cargo resupply missions to the International Space Station and commercial satellite deployments for customers like OneWeb and SES. The incident cost SpaceX approximately $100 million in lost hardware and triggered insurance claims exceeding $50 million.
SpaceX engineers identified the root cause within 72 hours and implemented design modifications to prevent oxygen leaks. The FAA cleared Falcon 9 for return-to-flight operations on August 30, 2024, after reviewing corrective actions. Industry analysts predict minimal long-term impact given SpaceX’s proven track record of 267 consecutive successful missions prior to this anomaly.
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