Overview
- A Long March 7A broke apart about 85 seconds into flight from Wenchang on Monday, Aug. 10, producing a large fireball and destroying the ChinaSat‑4B payload.
- State media and CASC confirmed the mission failed after an in‑flight anomaly and said investigators are analyzing telemetry and other data to determine a root cause.
- Analysts using amateur video and tracking data say the vehicle was destroyed at low altitude so neither the satellite nor debris reached orbit.
- Concern centers on first‑stage hardware because the 7A uses YF‑100 kerosene‑oxygen engines that are shared with other Long March vehicles, so investigators are checking for common‑part or structural issues.
- The 7A returned to service after a 2020 maiden‑flight failure and had completed many successful launches since, but the loss of ChinaSat‑4B raises near‑term uncertainty for manifest timing and for customers who relied on the satellite’s communications services.