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SpaceX swaps “suspect” Starship engine in record time

SpaceX has swapped out a misbehaving Raptor engine in record time and fired up Starship SN10 just 48 hours after the rocket's first "suspect" static fire. (NASASpaceflight - bocachicagal)

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SpaceX has reportedly swapped a “suspect” Raptor engine installed on Starship serial number 10 (SN10) in record time, setting the company up for what appeared to be an excellent static fire just 48 hours after the first test.

In a February 24th tweet, CEO Elon Musk told followers that “one of [SN10’s three Raptor] engines is suspect, so we’re swapping it out.” Engine swap-outs have been a regular procedure for SpaceX’s Starship team as the company continually pushes the envelope of both Starship and Raptor prototype fidelity and implement major design changes and upgrades. Of the five Starship prototypes (including Starhopper) with intentional flights under their belts, all required at least one engine replacement before being cleared to launch.

Within ~18 hours of Tuesday’s “suspect” Starship SN10 static fire, SpaceX dispatched a replacement Raptor down the road from a nearby storage site. Within ~12 hours, the faulty engine had been removed and a backup engine installed in its place. Another ~12 hours after that, SpaceX teams cleared the launch pad for Starship SN10 to attempt a second static fire and (hopefully) qualify the rocket for flight.

Starship SN10 – set to be the sixth prototype to fly – is now part of that elite but buggy group of flightworthy test articles. For the most part, that bugginess is all according to plan: SpaceX’s ability to move and react with extreme speed is what allows the company to make such rapid progress and begin test flights as early in the development process as it does. That speed of action includes responding to the inevitable bugs that crop up while testing cutting-edge rocket prototypes.

Case in point, after Tuesday’s 5pm CST static fire, it took SpaceX less than 48 hours to pore through the test’s data, conclude that one of SN10’s three Raptor engines was “suspect,” select a replacement engine, remove the faulty engine, install that replacement, and fire up Starship SN10 a second time. Even SpaceX’s world-class reusable Falcon rockets would have a hard time challenging that engine swap turnaround. Taking a broader look at the lay of the land, NASA’s SLS rocket booster – outfitted with four former Space Shuttle engines – will reportedly require more than three weeks for teams to swap out a faulty valve in one of those four engines.

The first SLS Core Stage suffered an early abort during its first static fire test in mid January. As of publishing, NASA is now working towards a second static fire attempt in mid March – two full months later. By all appearances, SpaceX turned Starship SN10 around in 48 hours, performing what looked like a full-duration, nominal three-engine static fire on February 25th. Unlike February 23rd’s static fire, Starship exhibited no signs of an abort immediately after the test, whereas SN10 began large depressurization venting the second its Raptors shut down on Tuesday.

Unfortunately, everything will remain uncertain until SpaceX official confirms its plans, but Starship SN10 should be fully cleared for a launch attempt as early as Monday, March 1st if a data review of its Thursday static fire raises no red flags. Stay tuned for updates as SpaceX prepares to find out if the third time really is the charm.

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Eric Ralph is Teslarati's senior spaceflight reporter and has been covering the industry in some capacity for almost half a decade, largely spurred in 2016 by a trip to Mexico to watch Elon Musk reveal SpaceX's plans for Mars in person. Aside from spreading interest and excitement about spaceflight far and wide, his primary goal is to cover humanity's ongoing efforts to expand beyond Earth to the Moon, Mars, and elsewhere.

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Tesla Semi gets its largest order yet

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Credit: Einride

Tesla got its largest order for the all-electric Class 8 Semi yet, a 500-unit order from Einride AB, a Swedish trucking company.

Einride made the announcement this morning following its second-quarter earnings call. The company said it plans to use 500 Tesla Semi units on its fleet intelligence platform, called Saga AI. The deployments will serve large companies like Amazon and will extend Einride’s electric freight network across logistics routes in California, New Jersey, Texas, Illinois, and Georgia.

The deployment is being carried out in several phases over the next two years as Tesla ramps production of the Semi at its dedicated production facility in Sparks, Nevada. Einride will receive its first Semi units in September.

Saga AI

Saga AI is Einride’s dedicated fleet intelligence platform. It enables scaled adoption of electric trucks for freight use and allows shippers to integrate electric capacity without the operational burden or capital risks of managing a fleet. This helps integrate cost-efficient logistics and makes budgeting and forecasting much more accurate.

Tesla Semi’s Adoption

The Tesla Semi is now gathering large-scale clients past those who have helped the company operate a Pilot Program to gain initial information and feedback from real-world drivers.

Perhaps the biggest and most notable is that of Frito-Lay and PepsiCo., who have worked with Tesla for the past several years to dial in the finer details of the truck, including its efficiency and operation-related components.

Tesla Semi gets strange-but-understandable comparison from Jay Leno

There has been tremendous progress in that time, and it even catalyzed Tesla to make some design changes, which were unveiled earlier this year.

But Einride CEO Roozbeh Charli says his company’s partnership with Tesla will continue to push those things forward:

“This deployment is yet another proof point that we can execute at the scale our customers demand. Working closely with Tesla to bring next-generation Semis into active operations quickly and at scale is a testament to the strength of that partnership, and how quickly this technology is maturing from promise to daily operations.”

Tesla Semi is already winning over truck drivers

Additionally, Dan Priestley, the Director of the Semi Program at Tesla, said the partnership is ideal due to Einride’s focus on sustainable transport:

“Einride is at the forefront of sustainable freight, and we are thrilled to deepen our relationship with them through this order of 500 Semis. EV heavy trucks provide lower costs per mile from fuel savings, reduced maintenance, and better uptime over diesel trucks. These savings increase further through operational efficiency when deploying EV trucks at scale, and we are excited that Einride recognizes this and look forward to supporting their deployments.” 

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India tells Elon Musk’s X to “Follow the Law” in latest censorship update

Elon Musk says X now exposes government censorship, but India’s secrecy laws complicate that promise.

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Elon Musk’s promise to make government censorship requests on X “clearly visible” is running into a wall in India, where the law forbids the very disclosure Musk is promising.

On August 15, Musk responded to an update from X’s open-source algorithm team by writing “Any censorship required by governments is now clearly visible.” The claim referred to a change X pushed two days earlier to its public xai-org/x-algorithm repository, which now includes a controversial filter written directly into the code. The filter suppresses posts from 665 accounts flagged by Brazil’s Superior Electoral Court from appearing in the For You feed of any viewer located in Brazil, unless the viewer already follows the account. The election tied to the filter is scheduled for October 4.

India’s government wasn’t as impressed, and responded on Monday that “X will have to follow the law of the land,” in response to Musk’s transparency push covered by the Times of India. The problem is structural rather than political. India issues content blocking orders under Section 69A of its IT Act, and Rule 16 of the accompanying 2009 Blocking Rules requires those orders to stay confidential. Publishing an India equivalent of the Brazil filter, naming specific accounts and citing specific government orders, would itself violate Indian law. Government use of Section 69A has grown from roughly 6,000 orders a year between 2018 and 2023 to about 24,300 in 2025, according to a Tech Times report.

Elon Musk shares details on X vs. Brazil conflict

The contrast puts Musk’s transparency pledge in an odd spot. It works largely as advertised in Brazil, where electoral law requires disclosure and X can point to specific account IDs and a specific court order in public code. It cannot work the same way in India, where the law requires the opposite. X users in India will keep seeing content disappear from search and their feeds without any public accounting of why, even as X tells the rest of the world that its censorship compliance is now inspectable.

This isn’t the first time X’s fights with a national government have shaped how the platform operates. Brazil’s Supreme Court ordered X to suspend the accounts of sitting lawmakers and journalists in 2024, a standoff that cost X its Brazilian revenue for months and froze Starlink’s local accounts before the investigation into Musk and X was closed in March with no evidence of wrongdoing found. X also sued California over a state law requiring moderation disclosures, arguing the mandate itself violated the First Amendment.

Whether India’s government pursues anything beyond a public statement remains to be seen. For now, the mismatch between what X can legally publish and what different governments legally allow it to publish is the real story behind Musk’s seven word claim.

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Tesla Cybercab launch preparations have begun

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Credit: TechOperator | X

Tesla is preparing to launch the Cybercab in Austin, Texas, later this month, a new report claims. Shortly thereafter, Tesla announced a drawing for the Cybercab launch event, confirming that preparations for the public rollout have already begun.

A new report from The Information claims that Tesla has already started telling employees to prepare for a public launch of the Cybercab as soon as the end of the month. The vehicle will launch publicly to riders in Austin initially.

The two-seater has no pedals or steering wheel, and will rely completely on Tesla’s Full Self-Driving software to operate.

While the report went unconfirmed from Tesla, the company launched a lottery to ride in a Cybercab at an upcoming launch event, essentially confirming that preparations are underway:

Cybercab entered production at Gigafactory Texas back in April, with initial units being test mules for the company as it has put the car in a variety of environments and climates. Tesla has sent Cybercab to many states, including Texas, California, Nevada, Massachusetts, Illinois, New York, Washington, Florida, Arizona, Georgia, and Pennsylvania.

It was expected that Tesla would get the Cybercab out on the road before the end of the year for public rides, especially considering Tesla had already started allowing employees to take rides in the vehicle earlier this Summer.

Tesla starts testing its Starlink-integrated Cybercab on public roads

This is a huge development, not only with the Cybercab program, but for Tesla’s self-driving program. Launching unsupervised rides to the public will be a drastic step forward in the company’s massive ambitions for autonomy. It is a long time coming, too. Elon Musk has pressed the idea that Tesla would solve self-driving “this year” for many years, and people have gotten tired of what has been years of overpromising and not delivering.

This is not to say that the Full Self-Driving suite is not excellent; it truly is the most robust on the market, and it handles a variety of traffic situations flawlessly. It definitely has its faults, but generally, it is fantastic.

Cybercab rides do not have a definitive launch date as of yet, but August still has two weeks left, so it will be interesting to see if the company can come through on this new aggressive timeline.

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