Full Breakdown
United Launch Alliance Scrubs ViaSat-3 F2 Launch Attempt Twice Due to Technical Issues
11/7/2025, 11:48:54 PM
Launch Overview and Technical Issues
On November 6, 2025, United Launch Alliance (ULA) scrubbed its second consecutive launch attempt of the ViaSat-3 F2 satellite due to a recurring technical issue with the Atlas V rocket's liquid oxygen tank vent valve. The launch was scheduled for 10:16 p.m. EST from Launch Complex 41 at Cape Canaveral Space Force Station. The initial attempt was called off on November 5 after the same valve malfunction was identified during pre-launch checkouts. ULA's Launch Director James Whelan confirmed the decision to scrub the launch shortly before the window opened, citing the persistent valve issue and adverse weather conditions, including thick clouds and rain.
Background on ViaSat-3 F2 Mission
The ViaSat-3 F2 satellite, manufactured by Boeing, is designed to enhance Viasat's broadband capabilities, adding over 1 terabit per second of capacity to its network across the Americas. This satellite is the second in the ViaSat-3 series, following the launch of ViaSat-3 F1 in 2023, which encountered an antenna deployment issue that limited its operational capacity. The new satellite is expected to enter service in early 2026 after extensive on-orbit testing.
Official Statements and Next Steps
In response to the scrubs, ULA President and CEO Tory Bruno indicated that the valve issue likely stemmed from moisture absorption during recent heavy rains, which caused ice formation during cryogenic tanking. ULA plans to transport the Atlas V rocket back to the Vertical Integration Facility for further evaluation and repairs. A new launch date has yet to be announced, as ULA engineers work to resolve the technical challenges.
Criticism and Opposition
The repeated launch delays have raised concerns among stakeholders regarding ULA's readiness and reliability, particularly as the Space Coast approaches a record-breaking year for launches. Critics argue that such technical issues could undermine confidence in ULA's capabilities, especially as competition from companies like SpaceX intensifies.
Conflicting Reports and Gaps
While ULA has consistently cited the liquid oxygen tank vent valve as the cause of the scrubs, there are varying accounts regarding the severity of the weather conditions. Some reports suggest that weather was not a significant factor, while others indicate that it played a crucial role in the decision to halt the launch. This discrepancy highlights the need for clearer communication from ULA regarding the interplay of technical and environmental factors affecting launch schedules.
Verbatim Quotes
- “Both scrubs were for the same issue, the booster’s LOX vent valve. We believe it absorbed moisture during the recent extreme rain at the pad and firmed ice during cryo tanking,” — Tory Bruno, ULA President and CEO
- “Gave it a good shot at drying and cycling in between attempts. Will need a more involved fix.” — ULA Engineering Team
The ULA team continues to assess the situation, with hopes of rescheduling the launch once the technical issues are resolved. The outcome of this mission is critical for Viasat, as it seeks to expand its satellite network capabilities in a competitive market.
