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  1. Roga50

    Electric car ship fire.

    I thought I read somewhere that it sank in 16,000 feet of water. If that's the case, that's deeper than the Titanic. I doubt a salvage would be possible.
  2. Roga50

    Air India 787 crashes on take off

    On Airbus, the thrust levers do not move by order of the computer (not sure on 787 though). On the airbus, the thrust lever setting is more of a "thrust limit" most of the time, when AutoThrust is enabled. (but moving to the full throttle position, called TOGA, will force full throttle...
  3. Roga50

    Air India 787 crashes on take off

    I'm not familiar with the 787, but with Airbus, those switches are used for the normal startup of the engines and also for the normal shutdown. Think of them as an "engine on-off switch." Internally, those switches send commands to the computer to perform a sequence of events, so it's not just...
  4. Roga50

    Air India 787 crashes on take off

    The Airbus design is almost identical to that. But you can't just move those switches. You have to pull up on them to move them.
  5. Roga50

    Champlain Towers NIST Update 4/11/25

    NIST released new video update... https://www.nist.gov/news-events/news/2025/06/nist-releases-extensive-video-update-champlain-towers-south-investigation
  6. Roga50

    Bayesian interim report

    They have raised the Bayesian now....
  7. Roga50

    Air India 787 crashes on take off

    The counter rollover bugs mentioned just shock me. I work in lifecycle maintenance (bug fixes) for enterprise-level networking hardware and we have had similar bugs in our code, over the years. We used to have our equipment starting acting "strangely" and even crashing if it was not rebooted...
  8. Roga50

    Air India 787 crashes on take off

    That just seems so unlikely. The gear is located on the front panel, left and above the throttles. Flaps are along side the throttles, to the right. Completely different action needed to operate them. Shaped differently. I'd be shocked if the PNF could get that reversed....
  9. Roga50

    Air India 787 crashes on take off

    Airbus models are almost the exact same layout.
  10. Roga50

    Air India 787 crashes on take off

    Assuming the crash didn't move things, that doesn't look like much flaps. Maybe 5 degrees?
  11. Roga50

    Dominican Republic Nigh Club Roof Collapse

    Not sure how real / accurate this is or the backstory but video is circulating that employees were sweeping up possible falling parts of the roof before the total collapse: https://www.instagram.com/reel/DINRIxsJ2Ns
  12. Roga50

    Dominican Republic Nigh Club Roof Collapse

    I wonder whether that is a permanent lighting/sound truss or temporary that travels with the performer? About 30 years ago, I was a theatrical/concert electrician and our rigging crews would fly an amazing amount of stuff overhead with medium-to-large traveling productions. In normal concert...
  13. Roga50

    AA jet and Military helicopter collide over Potomac

    The ATC recording that I heard has the helicopter pilot declaring at least twice that they are using "visual separation." FYI, Scott Manley ran a quick preliminary simulation of the flight along with ATC audio on his secondary channel:
  14. Roga50

    Miami Beach, Champlain Towers South apartment building collapse, Part 19

    South Florida fake engineer signed off on inspections of many recent projects--how soon before another collapse? https://www.local10.com/news/local/2024/11/12/safety-concerns-arise-after-south-florida-engineer-suspected-of-using-late-fathers-license/
  15. Roga50

    Boeing again

    If I were those two astronauts, you would NOT be getting me into Starliner for the return trip anymore. Even if Boeing and NASA agreed it was "safe."
  16. Roga50

    Lithium battery factory fire

    I still have a fixed automatic Halon extinguisher on my boat (in the engine room). Had no problem getting it re-certified a few months ago. They are still pretty common and the certification company said there is no reason to replace it unless it fails the tests.
  17. Roga50

    Baltimore Bridge collapse after ship collision

    New Chief Makoi video on bus tie breakers.... Link
  18. Roga50

    Baltimore Bridge collapse after ship collision

    I think it was Chief Makoi who even spoke about changing fuel types in a video a while back. It is not an instantaneous switch--you have to do it gradually (meaning the fuels are mixed during the process), so it takes a while to complete. There is an (old) Kongsberg MC90-V engine room...
  19. Roga50

    Baltimore Bridge collapse after ship collision

    I think the issue here that may have been missed by the automation is that DG3/4 fuel pump (and probably also cooling pumps, at least per the simulators I've been looking at) would not have been powered by the 6600v bus. So when those pumps lost power, the automation SHOULD (if I had designed...
  20. Roga50

    Baltimore Bridge collapse after ship collision

    I was waiting for Chief Makoi's video... He's great at explaining these things. So based on his video plus some comments that his viewers made (and he responded to), I'm thinking: Some sort of fault occurred in TR1 (I speculated on this before), leading to LR1 and HR1 opening. In the...

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