B773 at Paris on Apr 5th, airplane did not respond to commands

  • Juan Brown has an excellent explanation of what is known so far, along with an analysis of the alarms heard in the background.

    https://www.youtube.com/watch?v=cslSQB5mgyc

    Juan (an airline 777 pilot) also goes into why it is just fine that they were all speaking French in France.

  • Expecting a lot of armchair NTSB investigators to rock up here, but honestly not much indication on what happened until the appropriate authorities can pull the data recorders out of the aircraft and see what was going on.

    Looking forward to reading what happened but until then…

    Interesting observation that the controllers and pilots were speaking French to each other. They’re really not supposed to do that (English is the standard for ATC, in part so other aircraft can maintain situational awareness) but that happens a lot in France.

  • Worth watching Juan Brown's reaction, he's a 777 pilot.

    https://youtu.be/cslSQB5mgyc

  • Tower radio recording: https://www.youtube.com/watch?v=VzCNKhFOPqU

  • There is a further discussion among pilots here:

    https://www.pprune.org/rumours-news/646054-air-france-b777-c...

  • Pilot here (just private): Alarm seem to indicate that the autopilot was not disengaged till much later. The question is why?

    Left turn may just be because of interference of the localizer.. which the autopilot was following.

    With the autopilot on.. you have a fight on your hands until it disengages. (like in your Tesla :)

  • I suspect that similar to the Asiana 777 at SFO, this will turn out to be autopilot mode confusion on the part of the pilot, coupled with a late charge of instruction from ATC, and failure to monitor the flight path while trying to make the transition.

  • Too soon to say much. Comments so far are not very useful. Give it a few days until the flight data recorders are read.

  • Why is it possible for a pilot to "fight" the autopilot? From my (layman's) point of view, it seems logical that either the pilot would be in control or the autopilot would be in control, but not both at the same time.

  • The title could have been translated better, as one of the comments on the source pages notes. It would be more accurate to say that the aircraft was not responding to controls/control inputs, scary stuff.

  • Is it possible they did not disengage the auto-pilot?

  • > about 4.17nm before the runway

    Nautical miles?

    Read it as nanometres initially....

  • If somebody knows how to get the GPS/IGC data from the flight, I'd love to see a replay on https:/ayvri.com

  • FYI: "commands" in title appears to refer to the pilot controls, not ATC instructions.

  • I wonder if the cause is somewhat similar to the airmax.

  • If it's Boeing I ain't going.

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  • Hate to bring up the AF crash in the middle of the ocean from Brazil to France. This was, at the very root of it, a cultural issue. Pure speculation (because it's fun to speculate): this seems related to similar issues in the cockpit.

  • This is not normal, and they can't keep blaming it on having outsourced software work to low-paid Indian programmers like in the past.

    It would be interesting to tally up incidents like these, and see if there is some pattern to what type of plane, manufacturer, geographical location of incident etc.