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SpaceX operational astronaut launch debut back on track after “nail polish” delay

SpaceX's Crew-1 NASA astronauts pose in front of the Crew Dragon that will ferry them to the International Space Station just days before the spacecraft shipped to Florida. (SpaceX)

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In a new NASA briefing, SpaceX vice president of build and flight reliability Hans Koenigsmann was able to explain in far more detail why a recent last-second Falcon 9 launch abort happened and how it wound up delaying the company’s first operational astronaut launch.

Now scheduled to lift off no earlier than (NET) 7:49 pm EST (00:49 UTC) on Saturday, November 14th, SpaceX’s Crew Dragon Crew-1 mission was originally expected to launch in late September, October 23rd, and October 31st. On October 2nd, however, a new Falcon 9 booster – sibling to Crew-1’s own new booster – automatically aborted its GPS III SV04 satellite launch attempt just two seconds before liftoff. The rare last-second abort was quickly blamed on “unexpected pressure rise in the turbomachinery gas generator” by CEO Elon Musk.

Likely built side-by-side with faulty GPS III SV04 Falcon 9 booster B1062 at SpaceX’s Hawthorne, California factory, Crew-1 Falcon 9 booster B1061 was almost immediately inspected to search for any commonality once the cause of the abort was better understood.

SpaceX COO and President Gwynne Shotwell stands in front of the Falcon 9 booster that will soon ferry four astronauts to the ISS. (TIME/SpaceX)

Just one week before the latest briefing, NASA human spaceflight program administrator and former Commercial Crew Program manager Kathy Lueders revealed in a statement on Twitter that SpaceX was still analyzing the cause of the abort but had already determined that at least one Crew-1 booster engine would need to be replaced, as well as one engine on Falcon 9 booster B1063.

Crew-1 Falcon 9 booster B1061 arrived in Florida on July 14th. (SpaceX)
Falcon 9 booster B1063 was spotted on its way west from McGregor, Texas to Vandenberg Air Force Base, California in August. (D. Stamos)

Now, during NASA’s October 28th Crew-1 briefing, SpaceX’s Koenigsmann revealed that the company had ultimately decided to replace not one but two of Crew-1 booster B1061’s nine Merlin 1D engines. Thanks to Falcon 9’s namesake nine-engine booster design and SpaceX’s prolific rocket factory, that process was completed extraordinarily quickly, simply requiring the redirection of already qualified Merlin 1D engines from a fairly large pool. Based on Koenigsmann’s phrasing, SpaceX has already installed both replacement engines on the Crew-1 booster.

What, though, caused GPS III SV04’s launch abort and how did that affect Crew-1?

Rocket engine vs. “nail polish”

According to Koenigsmann, in the course of the rapid and complex mechanical and electrical ballet preceding Falcon 9 first stage ignition, the rocket’s autonomous flight computer observed that two of the GPS III SV04 booster’s nine Merlin 1D engines appeared to be running ahead of schedule, so to speak. The computer immediately halted the ignition process to avoid what could have otherwise been a “hard” (i.e. stressful or damaging) start. SpaceX quickly began inspecting the rocket within 24 hours but was unable to detect anything physically or electrically wrong with Falcon 9’s Merlin 1D engines and engine section.

A Merlin 1D engine is inspected and tested in McGregor, Texas. (SpaceX)

Out of an abundance of caution, SpaceX removed both misbehaving engines and shipped them to its McGregor, Texas development and test facilities where – somewhat miraculously – the same premature startup behavior was replicated on the test stand. After a great deal of increasingly granular inspections, SpaceX finally narrowed the likely cause down to a tiny plumbing line feeding one of the engine’s gas generator relief valves. In a seemingly random subset of relatively new Merlin 1D engines, SpaceX eventually discovered that a supplier-provided relief valve line was sometimes clogged by a protective lacquer Koenigsmann likened to “red nail polish.”

A Merlin 1D is prepared at SpaceX’s Hawthorne factory. The small cylindrical tube on the side is the engine’s gas generator. (SpaceX)

Used to selectively exclude parts of the engine tubing during a surface finishing process known as anodization, the lacquer was either unsuccessfully removed on a random selection of engine parts or was accidentally channeled into a blockage by over-enthusiastic cleaning. Ultimately, for whatever, reason that miniscule blockage was enough to cause affected Merlin 1D engines to consistently attempt to ignite a tiny fraction of a second early.

Crucially, when SpaceX discovered the possible cause and cleaned out the blocked plumbing, each previously affected Merlin 1D engine performed perfectly, all but directly confirming both the cause and the cure for Falcon 9’s October 2nd abort.

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A Falcon 9 Block 5 booster’s engine section and heat shield. (SpaceX/Discovery)

Astronauts enter quarantine

In anticipation of SpaceX seemingly simple solution to the gas generator problem, NASA Commercial Crew Program manager Steve Stich revealed that SpaceX’s Crew-1 mission astronauts – Shannon Walker, Victor Glover, and Mike Hopkins, and JAXA (Japanese) astronaut Soichi Noguchi – had begun routine prelaunch quarantine procedures in anticipation of a November 14th launch.

NASA astronauts Shannon Walker, Victor Glover, and Mike Hopkins, and JAXA (Japanese) astronaut Soichi Noguchi are nearly set to fly on Crew-1. (SpaceX)
Crew-1 will follow in the fresh footsteps of NASA astronauts Bob Behnken and Doug Hurley’s near-flawless Demo-2 Crew Dragon launch and landing debut. (NASA/Bill Ingalls)

Stich also offered a more specific Crew-1 schedule, beginning with an integrated Falcon 9 and Crew Dragon static fire test NET November 9th and a full dry dress rehearsal on November 11th before the first launch attempt on November 14th. Notably, thanks to coincidental orbital dynamics, a successful launch on November 14th would enable Crew Dragon to raise its orbit and rendezvous with the International Space Station a brisk eight and a half hours after liftoff – three times quicker than the more common 27.5-hour transit.

Stay tuned for updates as the mission’s launch date approaches.

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 Full Self-Driving becomes main pillar of new Referral Program

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Credit: Tesla

Tesla Full Self-Driving is now the centerpiece of the company’s newly revised Referral Program, which launched on October 29.

Instead of referring people to purchase vehicles and the referrer receiving $250 in Tesla Credit, the new program now incentivizes Full Self-Driving subscriptions.

If a Tesla owner is on an FSD trial and uses a referral code to subscribe to Full Self-Driving, the person whose Referral Link was used will receive one month of FSD (Supervised). Their code can be utilized 12 times per year, with January 1 marking the reset date.

Realistically, this means that if your Referral Code is used by 12 Tesla owners on an FSD trial, you will receive a full year of FSD for free.

The previous program made it pretty difficult to get referrals; buying a vehicle is obviously a much larger financial strain than subscribing to Full Self-Driving for a month.

Of course, the previous Referral Program also offered a tangible benefit: $250 in credits you could use on Service, Supercharging, or anything in the Tesla Shop. It truly could pay for someone’s travel for a year. It recently bought me a new backpack and a T-shirt.

However, this new program is much more attainable for those who do not have a massive online presence of a slew of friends in the Tesla community who will use the code and max out subscriptions for vehicle purchases.

The Full Self-Driving suite will now be the keystone of the Referral Program, which makes it more inclusive and more fun for everyone with an awesome benefit.

It also gives the impression that Tesla is truly focused on FSD subscriptions, something that saw a tremendous increase in volume in Q3, as 75 percent of deliveries for the quarter came with an FSD subscription attached.

Full Self-Driving data is so instrumental to the suite’s improvement that this kind of program benefits Tesla as much as it does the consumer.

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Tesla made napping in a Robotaxi easier with its latest update

Tesla’s quiet mode reaches Model Y Robotaxis, blacking out the screen for riders wanting rest.

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Tesla’s quiet mode, the setting that blacks out the screen for riders who want to rest, has moved beyond the Cybercab. A video posted Thursday by Spencer (@scotsrule08) shows the feature running in a Model Y Robotaxi on a night ride that appears to be in Dallas.

The rider taps a small crescent moon icon in the bottom right corner of the map screen. The map, media player, app shortcuts and Grok prompt disappear, leaving a dark display with “Arriving soon,” the destination and a line reading “Tap display to exit quiet mode.” Controls a passenger may still need, including Pull Over, cabin temperature, volume and Support, stay visible. One tap anywhere brings the full map back.

Quiet mode first showed up in the Cybercab last week, which Teslarati reported alongside a new rear camera view. Tesla has been trimming cabin noise in other ways too. On October 25, Spencer reported that Robotaxi turn signals now chime for the first four blinks and then go silent. Tesla has not published release notes for either change.

Elon Musk has been pitching this use for more than a decade. In October 2014, he said that “maybe five or six years from now I think we’ll be able to achieve true autonomous driving where you could literally get in the car, go to sleep and wake up at your destination,”

By 2017 he was setting a higher bar. Speaking at TED, Musk said the hard part was not making self-driving work 99.9 percent of the time, “because, like, if a car crashes one in a thousand times, then you’re probably still not going to be comfortable falling asleep. You shouldn’t be, certainly.”

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Owners asked for something similar in their own cars. In December 2019, a Tesla owner requested a Nap Mode that would keep the climate running and wake the occupant with an alarm, and Musk answered “Ok,” as Teslarati covered at the time.

The line returned when the Cybercab was unveiled at the We, Robot event in October 2024. “We’ll move from supervised Full Self-Driving to unsupervised Full Self-Driving, where you can fall asleep and wake up at your destination,” Musk said. On Tesla’s first quarter earnings call in April 2025, he called it the deciding measure: “The acid test is, can you go to sleep in your car and wake up in your destination and I’m confident that will be available in many cities in the US by the end of this year,”

Tesla has run driverless Model Y rides in Dallas and Houston since April, so a passenger dozing off on the way home is now a realistic use of the button. Tesla is also offering new riders a free first trip in both cities, according to an in-app screen shared by tracker Ethan McKanna, and said on its third quarter call that Cybercab rides would launch in Dallas next month.

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FCC green lights SpaceX’s move to a showdown with Verizon and AT&T

The FCC advanced plans opening 482 MHz to satellite phone service, boosting SpaceX’s Starlink Mobile.

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A hand holds a smartphone displaying the Starlink Mobile app interface showing a strong “Connected – Direct to Cell” signal, with a Starlink satellite beaming connectivity signals down to Earth from orbit. The background features the planet’s night side glowing with city lights against the curve of the atmosphere, set above a scenic twilight landscape.

The Federal Communications Commission voted Thursday to move forward with a proposal that would open an additional 482 MHz of spectrum to satellite service beamed directly to ordinary phones, a step that could widen the road for SpaceX’s Starlink Mobile to compete with the country’s largest wireless carriers.

The commission adopted the notice of proposed rulemaking at its October open meeting in Washington, Reuters reported. The proposal would raise the number of bands eligible for Supplemental Coverage from Space from five to 13, according to the FCC fact sheet. Commissioners also advanced a companion item proposing an auction of 25 MHz in the 1675 to 1695 MHz and 2020 to 2025 MHz bands, which could be used for terrestrial service, direct to device service or both.

Thursday’s vote does not hand any spectrum to SpaceX. It opens a public comment period, and final rules will come later. Under the draft, comments would be due 60 days after the notice is published in the Federal Register. The FCC had not released the adopted text at the time of writing, so it is not yet clear whether any bands were changed before the vote.

That question is where the fight now moves. AT&T, Verizon and T-Mobile, through industry group CTIA, asked the FCC to drop the 2.5 GHz and 3.45 GHz bands, which make up 290 MHz of the 482 MHz on the table, as Teslarati reported ahead of the vote. T-Mobile argued satellite interference could wipe out up to 96% of a cell site’s uplink coverage area. SpaceX asked the commission to go the other way and add the 902 to 928 MHz band.

The rule change that matters most to SpaceX may be a structural one. Today, a satellite operator must lease spectrum from every carrier holding co-channel licenses across an entire region such as the contiguous United States. The proposal would replace that with a certification that the operator has coexistence agreements covering only the areas it plans to serve, or that it holds the terrestrial licenses itself.

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SpaceX has spent this year building that second path. It bought EchoStar’s AWS-4 and H-block licenses in a deal worth roughly $17 billion, and earlier this month agreed to acquire Grain Management’s nationwide 800 MHz portfolio, which the company said would pave the way for Starlink to become a major US mobile carrier. The FCC approved SpaceX’s purchase of three unused AWS-3 licenses from Tristar on October 21, and cleared its plan for 15,000 next generation direct to cell satellites on October 6.

The regulator has not always sided with SpaceX. In April, the FCC dismissed a SpaceX petition seeking access to Mobile Satellite Service spectrum held by incumbents, and it rejected 2.5 GHz for satellite coverage when it first adopted the framework in 2024.

The carriers are also building their own defenses. In May, the three companies agreed in principle to form a joint venture pooling spectrum for satellite service, and T-Mobile remains SpaceX’s US launch partner for Starlink Mobile even as it leads the push to keep satellites out of 2.5 GHz. SpaceX President Gwynne Shotwell has said service on SpaceX’s own airwaves is targeted for early 2028.

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