Yes, the green flame is caused by burning copper from depleting fuel in the regenerative cooling circuit and going oxygen-rich (closer to stoichiometric temperature) in the main combustion chamber.
Slight underperformance of engines on this flight is the reason. The booster is meant to land with tiny residuals, so the solution is to improve engine performance and performance consistency (underway with Raptor V3.2), as well as adjust flight software to do MECO1 about one second earlier to ensure enough propellant for boostback and landing (tiny change).
These early ships and boosters are already outdated by improved designs in production or on the test stand, so this booster loss does not change our timeline to reach high volume, fully reusable Starship flights.
BREAKING: Transportation Secretary Sean Duffy says investigators are examining whether a contractor error or a faulty router caused a failure in the nation's air traffic control system.
Duffy says the problem emerged during an upgrade from copper to fiber, when a router being replaced began flooding other routers in the network.
Officials are now working to determine whether the contractor made an installation error or the equipment itself malfunctioned.
INSANE: Footage shows aftermath of the Atlantic Asphalt tanker crash into the American Heritage river cruiser on the Mississippi River in New Orleans.
129 passengers were on board at the time of the crash.
This is horrifying. Pray 🙏🏻
JUST IN: Crypto is crashing
$BTC falls under $67,000
$ETH falls under $1,900
$XRP falls under $1.00
$SOL falls under $75
Over $330,000,000 liquidated from the cryptocurrency market in the past 2 hours