**Summary**
On May 11 2026 SpaceX completed the first full‑stack wet‑dress rehearsal (WDR) for Starship V3 (Booster 19 + Ship 39) on Pad 2, loading >5 000 t of propellant in ~30 min and executing a flawless countdown that ended in a planned abort. The test validated cryogenic handling, ground‑support equipment, autonomous sequencing, detonation‑suppression, water‑deluge, and detanking procedures with no anomalies. Based on the successful WDR, the FAA and USCG issued NOTAMs pointing to a launch window targeting **May 19 2026 at 17:30 CDT** (backup May 21), making Flight 12 imminent.
Flight 12 will debut the Raptor 3 engine (33 on Booster 19, ~22 % more thrust than Raptor 2), feature an integrated hot‑staging ring on the booster, and carry 8‑10 Starlink‑V3 mass simulators to test the PEZ‑style payload door. After hot staging, the booster will perform a boost‑back and soft splashdown in the Indian Ocean (no tower catch), while Ship 39 will conduct vacuum engine relays for refueling data, re‑enter at Mach 25 over a novel, tight trajectory threading between the Yucatán Peninsula and Cuba, and aim for a stable ocean splashdown to demonstrate rapid‑turnaround reusability. The mission’s success will clear the way for operational Starlink launches and future Moon/Mars missions.
1. On May 11, 2026, SpaceX completed the first full‑stack wet dress rehearsal for Starship version 3 on pad 2.
2. During the wet dress rehearsal, over 5,000 metric tons (11 million pounds) of propellant were loaded onto the fully stacked Starship and Superheavy V3 vehicles for the first time.
3. Booster 19 with 33 new Raptor 3 engines and ship 39 were fully loaded with propellant in a real flight‑like countdown.
4. The wet dress rehearsal began its chill‑down phase around 7:00 a.m.
5. Liquid oxygen was at –207 °C and liquid methane at –62 °C during the chill‑down.
6. Pad 2 upgrades (higher‑capacity pumps, optimized piping) allowed loading of over 5,000 t of propellant in about 30 minutes.
7. Previous loadings required 45 to 60 minutes.
8. As propellant flowed, frost formed on booster 19 and ice appeared at the base of its LOX tank, creeping upward.
9. A white ice ring formed around the methane tank on ship 39.
10. The entire 121 m stack contracted slightly in height due to thermal shrinkage.
11. The observed frost and ice confirmed that tank insulation and thermal‑management systems performed as engineered.
12. The test entered terminal countdown, switching the vehicle to full autonomous mode.
13. At T‑minus 10 minutes, ship 39’s flaps deployed and gimbaled through full range while RCS thrusters under the flaps fired test pulses.
14. At T‑minus 25 seconds, the detonation‑suppression system activated, flooding the engine bay with inert gas.
15. Between T‑minus 10 and T‑minus 8 seconds, the deluge system released water jets beneath the launch mount to absorb acoustic energy.
16. All steps proceeded exactly as planned.
17. Seconds before T0, a planned abort command was issued and the countdown was safely shut down.
18. During detanking, ice layers cracked and fell like confetti while excess methane vented from ship 39 as a white plume.
19. No anomalies were reported throughout the wet dress rehearsal.
20. The wet dress rehearsal data directly influenced the launch timeline for Flight 12.
21. It was the first integrated test of the new V3 vehicle, Pad 2, ground‑support equipment, sensors, valves, software, and personnel under real flight conditions.
22. A few hours after the wet dress rehearsal, the FAA and USCG issued new NOTAM and maritime notices.
23. Those notices indicate Flight 12 is targeting a launch window of May 19, 2026 at 5:30 p.m. CDT, with a backup date of May 21, 2026 at the same time.
24. The actual launch countdown will follow the same sequence as the wet dress rehearsal.
25. At T‑minus 3 seconds, all 33 Raptor 3 engines on booster 19 will ignite at full throttle simultaneously.
26. The combined thrust at liftoff will be over 9,200 t.
27. Raptor 3 engines are lighter, simpler, and provide 22 % more thrust than Raptor 2 engines.
28. Telemetry will record combustion stability, gimbal response, and propellant‑feed data throughout the flight.
29. Approximately 2 minutes 40 seconds after liftoff, at about 70 km altitude, hot staging will occur.
30. On V3, the hot‑staying ring is built directly into booster 19.
31. When booster 19 is low on propellant, six sea‑level and three vacuum Raptor 3 engines on ship 39 will ignite while still attached.
32. The plasma from ship 39’s engines will push booster 19 away in a controlled manner, while the integrated ring shields the booster dome from heat.
33. After hot staging, booster 19 will flip, perform a boost‑back burn hover for a few seconds, then execute a controlled soft splashdown in the Indian Ocean.
34. No tower catch will be attempted on this flight.
35. About 8 to 10 minutes after hot staging, once ship 39 is in coast phase, the PEZ‑style payload door will open.
36. Flight 12 will carry 8 to 10 Starlink mass simulators (dummy satellites) equipped with sensors, transmitters, and batteries.
37. These simulators match the mass, size, and center‑of‑gravity of the operational Starlink V3 satellite.
38. The simulators will transmit real‑time data on deployment dynamics, shaking, release speed, orientation, and spin rate.
39. During the coast and in‑space phase, ship 39 will perform multiple Raptor 3 engine relights in vacuum to gather data for orbital refueling.
40. Ship 39 will re‑enter the atmosphere at Mach 25, surrounded by a plasma sheath that interrupts communications for several minutes.
41. The V3 heat shield features thousands of new ceramic tiles, improved materials, better attachment methods, and enhanced gap sealing.
42. Some nose‑cone areas may test new white heat‑shield tiles, possibly with improved oxidation resistance or a new ablative layer for lunar missions.
43. Onboard cameras will record the re‑entry event.
44. Ship 39 is the first V3 Starship with an entirely new tile system, both in geometry and attachment method, developed after analysis of all V2 flight heat‑shield data.
45. The goal is to reuse tiles across multiple re‑entries without replacement.
46. Flight 12 will use a southern trajectory tilted roughly 30° further south than previous flights.
47. The trajectory threads a narrow corridor between Mexico’s Yucatán Peninsula and Cuba, passes between the Cayman Islands and Jamaica, then over Haiti and the Dominican Republic before heading into the Atlantic.
48. At certain points the corridor is only 80 to 120 nautical miles wide, narrower than any prior flight path.