NASA's WB-57 aircraft is again preparing to fly to South Texas, with a flight plan that has it arriving around 2:30 p.m. ET – a key indicator of when SpaceX is planning today's #Starship SN8 launch attempt:
@flightaware The flight plan for NASA's WB-57 has been moved up by about 20 minutes (from 1:51 p.m. ET to 1:30 p.m. ET).
Again, it's only an indicator, but this suggest a SpaceX Starship SN8 launch attempt at around 2:15 p.m. ET given yesterday's flight time.
Correction: I double-checked yesterday's WB-57 flight and today's 1:30pm ET departure suggests a 3pm ET attempt (i.e., about 90 minutes after departure).
Yesterday: WB-57 departed at 4:11pm ET, arrived above Boca Chica at ~5pm ET, and the launch attempt was at 5:35 pm ET.
FlightAware is showing WB-57 has not yet taken off, 10 min after its scheduled departure time of 1:30pm ET.
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Q: What material did SpaceX find in the engine release valve? Are the engines for Crew-1 from the same production line as the problematic ones?
Koenigsmann: "It was described to me as a lacquer, basically a nail polish I think is a good analogy. In this case it had a red color."
Koenigsmann further breaks down the sequence that caused the auto-abort for GPS-III SV04: "It's not necessarily bad in most cases for the engine but, in extreme cases, it may cause damage to the engine."
NASA's Stich adds that use of this lacquer "is very standard in aerospace."