SpaceX COO and President Gwynne Shotwell says that the company now expects Starbase to be ready for Starship’s first orbital launch attempt as early as June or July, pushing the schedule back another month or two.

To accomplish that feat, SpaceX will need to more or less ace a wide range of challenging and unproven tests and pass a series of exhaustive bureaucratic reviews, significantly increasing the odds that Starship’s orbital launch debut is actually closer to 3-6 months away. While SpaceX could technically pull off a miracle or even attempt to launch hardware that has only been partially tested, even the most optimistic of hypothetical scenarios are still contingent upon things largely outside of the company’s control.

Will FAA or won’t FAA?

Both revolve around the Federal Aviation Administration (FAA), which – in SpaceX’s case – is responsible for completing a ‘programmatic environmental assessment’ (PEA) of orbital Starship launches out of Boca Chica, Texas and issuing a launch license for the largest and most powerful rocket ever built. In some ways, both tasks are unprecedented, but the bureaucratic processes involved are still largely the same as those SpaceX has successfully navigated over the last two decades.

First up, the FAA’s environmental review. Until very recently, the fate of Starbase’s PEA was almost completely indeterminable and could have gone any number of ways – most of which would not be favorable for SpaceX. However, just a few days ago and about a week after the FAA’s latest one-to-two-month PEA delay announcement, the agency updated an online dashboard to show that the fourth of five main PEA processes had been completed successfully. The most important part of the update is the implication that SpaceX and the FAA have now completed almost every aspect of the PEA that requires cooperation with other federal agencies and local stakeholders.

Only one more cooperative process – ensuring “Section 4(f)” compliance – still needs to be completed. Without delving into the details, there is no convincing evidence to suggest that that particular step will be a showstopper, though SpaceX might have to compromise on certain aspects of Starbase operations to complete it. Once Section 4(f) is behind them, the only thing standing between the FAA and SpaceX and a Final PEA is the completion and approval of all relevant paperwork. In other words, for the first time ever, the FAA’s targeted completion date – currently May 31st, 2022 – may actually be achievable.

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Still, as the FAA itself loves to repeatedly point out, “the completion of the PEA will not guarantee that the FAA will issue a launch license – SpaceX’s application must also meet FAA safety, risk, and financial responsibility requirements.” Even if the PEA is perfect, SpaceX still has to secure an FAA launch license for the largest and most powerful rocket in history. It’s unclear if SpaceX and the FAA have already begun that painful back-and-forth or if some tedious fine print prevents it from starting before an environmental review is in place. Without knowing more, launch licensing could take anywhere from a few days to several months.

A series of tubes

Without the FAA’s launch license and environmental approval, any Starship SpaceX builds cannot legally launch from Starbase. On the other side of the coin, though, it’s just as true that the FAA’s nods of approval are worth about as much as the paper they’re written on without a rocket that’s ready to launch. In a perfect world, SpaceX would have a Starship and Super Heavy booster fully qualified, stacked, and sitting at Starbase’s orbital launch site when the FAA finally gives a green light. However, that’s not quite what SpaceX’s reality is today.

First Starship orbital flight will be with Raptor 2 engines, as they are much more capable & reliable. 230 ton or ~500k lb thrust at sea level.

We’ll have 39 flightworthy engines built by next month, then another month to integrate, so hopefully May for orbital flight test.— Elon Musk (@elonmusk) March 21, 2022

SpaceX has made a significant amount of progress in the last month and a half, but contrary to CEO Elon Musk’s hopes as of March 21st, the company will absolutely not be ready to attempt an orbital launch by the end of May. Nonetheless, Shotwell’s estimate of “June or July” may not be completely out of reach. Since Musk’s tweet, SpaceX finished assembling Super Heavy Booster 7, rolled the rocket to the launch site on March 31st, and completed several major tests in early April. However, during the last test, an apparent operator error significantly damaged a large part installed inside the booster, forcing SpaceX to return Super Heavy B7 to Starbase’s build site. After two and a half weeks of repairs, Booster 7 returned to the launch site on May 6th and completed another ‘cryoproof’ test, seemingly verifying that those quick repairs did the job.

Had Booster 7 not required repairs, it’s not impossible (but still hard) to imagine that SpaceX could have had a Super Heavy booster ready to launch by the end of May. Still, the static fire testing Booster 7 needs to complete is almost entirely unprecedented and could take months to complete. To date, SpaceX has never ignited more than six Raptors at once on a Starship prototype, while Super Heavy will likely need to complete multiple 33-engine tests before it can be safely considered ready for flight. Worse, there is no guarantee that SpaceX actually wants to fly Booster 7 after the damage it suffered. If Booster 8 carries the torch forward instead, Starship’s orbital launch debut could easily slip to late Q3 or Q4 2022.

Meanwhile, Super Heavy is only half of the rocket. When Musk tweeted his “hopefully May” estimate, SpaceX was nowhere close to finishing the Starship – Ship 24 – that is believed to have been assigned to the orbital launch debut. However, SpaceX finally accelerated Ship 24 assembly within the last few weeks and ultimately finished stacking the upgraded Starship on May 8th. A great deal of work remains to truly complete Ship 24, but SpaceX should be ready to send it to a test stand within a week or two. Even though the testing Ship 24 will need to complete has been done before by Ship 20, making its path forward less risky than Booster 7’s, Ship 24 will debut a number of major design changes and likely needs at least two months of testing to reach a basic level of flight readiness.

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Last but not least, there’s the question of the orbital launch site (OLS) itself. Is the launch mount ready to survive a full Super Heavy static fire? Is the pad’s tank farm ready to fill Starship and Super Heavy with several thousand tons of flammable, explosive cryogenic propellant? If it’s a goal of the test flight, is the launch tower ready for a Super Heavy booster to attempt to land in its arms? While there are reasons to believe that the answer to some of those questions is “yes,” plenty of uncertainty remains and plenty of work is still incomplete.

Ultimately, Shotwell’s June goal is almost certainly unachievable. Late July, however, might be within the realm of possibility, but only in the unlikely event that all Booster 7 and Ship 24 testing is completed almost perfectly and without further delay. For the pragmatic reader, August or September is a safer bet. Thankfully, at least one thing is certain: activity at Starbase is about to get significantly more exciting.