Another Delay for Starship Twelfth Flight Test? What's Left To Do Before Launch...

Another Delay for Starship Twelfth Flight Test? What's Left To Do Before Launch...
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#alphatech
#techalpha
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0:00 Unexpected Delay
0:40 Pad Preparation
2:40 Engine Swap
4:11 Special Payload
5:50 Tight Timeline
9:24 Upgraded Dispenser
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Another Delay for Starship Twelfth Flight Test? What's Left To Do Before Launch...
It’s unexpected! SpaceX has just officially delayed Starship Flight 12 by one day! This is probably the smartest call right now, especially after the confusing activities we’ve seen from Ship 39 and Booster 19 at Starbase over the past few days. So what actually happened? When is the new launch target? Let’s find out.
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Another Delay for Starship Twelfth Flight Test? What's Left To Do Before Launch...
Right after that spectacular first Wet Dress Rehearsal on Launch Pad 2, SpaceX gave Booster 19 and Ship 39 almost no time to breathe. Both vehicles were quickly destacked and pulled straight back to the Production Site. The reason was straightforward: SpaceX had locked in the official launch date for May 19th. But that was the story from a few days ago. Now, they’ve updated the target to Wednesday, May 20th at 6:30 PM ET for the first Starship v3 test flight — the same day as the Model S/X Signature delivery event in California.
But why did they delay it by one day? We need to go back about a week. On May 12th, after being moved back to the production site, engineers performed a final comprehensive inspection on Booster 19 and successfully installed the Flight Termination System on the vehicle.Then, on the evening of May 15th, SpaceX issued a road closure notice titled “From Production to Launch Pad,” scheduled from 11:59 PM until the next morning. That was the clearest signal yet: Booster 19 was about to roll out to Launch Pad 2 for the final time, ready for stacking and launch prep.But… they didn’t move it. Instead, SpaceX decided to keep Booster 19 inside Megabay 1 for a few days. Even as of May 18th, with the launch window getting very close, there was still no sign of it being rolled out. Maybe the workers had grown too attached to B19 after spending so much time together and didn’t want to let her go… but of course that’s just a joke! In reality, this was clearly a deliberate decision that contributed to the one-day delay. From May 15th to the 18th, they conducted extremely intensive testing on both the water deluge system and the chopsticks. They flooded Starbase so much it looked like a flash flood had hit the area.Since this is the first flight of Starship Version 3, it makes sense that they wanted to be extra thorough. After all — better safe than sorry.
Another Delay for Starship Twelfth Flight Test? What's Left To Do Before Launch...
Now, what about Ship 39?
While the launch clock was ticking down, with the date locked and Booster 19 already heading to the pad, SpaceX quietly rolled Ship 39 back to Massey's Test Site. Not to production for payload and FTS installation — back to Massey's. For more testing.
Why?
This is what the closest watchers have been buzzing about, and multiple reliable sources confirm it: after the successful six-engine Raptor 3 static fire, SpaceX spotted data from at least one engine that wasn't fully nominal and decided to replace it. On any other ship, swapping an engine and flying might have been acceptable. But not on Ship 39 — this is the very first Block 3 Starship, with an all-new Raptor 3 architecture. SpaceX refused to risk sending an unverified engine to space just because the deadline was approaching.
The return to Massey's was for an igniter test, which strongly suggests they had already replaced that engine. After this test, Ship 39 will still need to head back to Mega Bay 2 for payload integration before rolling to the pad.
This wasn't a full static fire. Looking at the propellant load — full LOX tanks but only one or two rings of methane — it was clearly a spin prime or igniter check: spinning up the turbines, pulling propellant through the system, and verifying the spark plugs on the new engine. Just enough to confirm everything works without lighting the full beast. Quick, clean, and extremely cautious.
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