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Cake day: July 1st, 2023

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  • And to add to the conversation(if there’s anything incorrect please let me know) from videos I’ve seen by MentourPilot, Captain Joe and online sources

    The process will most likely look like the following (assuming an emergency descent is needed because the cabin can’t be pressurized like with the window vs some smaller hole air leak):

    • They will put on their own o2 masks (it’s critical to do this as you can lose consciousness in under a minute)

    • They will set the transponder to a code that denotes the emergency to both ATC and nearby traffic

    • They will radio the distress both for ATC but also nearby planes to give them a heads up that they’ll be rapidly descending. If it’s in a high traffic area they may wait for approval to begin descent (and you can be sure ATC is going to be moving planes out of the way.). If it’s taking too long they will begin descending anyway.

    • They’ll announce to the cabin that they’re doing an emergency descent

    • They will start a rapid descent to 10,000 ft (if terrain allows it, otherwise down to whatever they can safely get to). This is because the emergency o2 is limited to about 15 minutes.

    Some interesting things I learned about this.

    They will often use autopilot for the descent and level flight. This is because of limited visibility and a risk of possible issues caused by low o2.

    They turn on all lights to make sure they’re as visible as possible to other traffic.

    This descent will be really unpleasant. Not a gentle descent but the safest one (especially if they’re unsure if there’s any structural issues) they can do. Which will be quite a bit steeper than anybody is used to.

    So passengers on the plane will experience this as:

    • Loud rushing noise. Possible moisture filling the cabin now that you have outside cold air mixing with warm air and surfaces inside

    • Masks dropping and seatbelt signs

    • Shortly after the Captain saying “Emergency descent” 3 or so times

    • Flight screw scrambling to seats and putting on masks

    • The sound of the wings adjusting for speed brakes, shuddering from the flight profile change,

    • The sounds of the engines being revved up to the planes maximum speed as the nose of the plane tipping down. It will feel like it’s faster than it really is with the shift in gravity followed by being pressed back due to the increase in speed during descent.

    • The plane shifting as they turn away from the main traffic area as they descend (unless told otherwise by ATC, etc)

    Not a fun experience I’m sure

    Some sources to check out

    Emergency descend!! Cockpit video

    Explosive decompression at Simulador TCP. EAS Barcelona pilot school

    Pressurisation Problems: Guidance for Flight Crews

    Aircraft “Falling” - Emergency descend explained










  • While I can’t speak to specific apps alot of times it’s house cleaning stuff.

    Maybe some bug that affects a certain number of users is found and fixed. And the update resolves that bit, since you weren’t affect, you don’t notice it.

    Other times it’s to include fixes in libraries they’re using. So, for example, a JSON parsing library may have a security fix and they updated their app to use that newer version.

    Another could be some behind the scenes api/library updates. Maybe a service they’re using for content (such as interacting with Lemmy) or maps or advertisements is being updated and they need to point their app to the new service address or change how they interact with it.

    And of course there could be feature updates but those, usually, would be things you’d notice. Although, in some cases, it may be packaged with the application but waiting for some criteria (a backend service to be ready) or may even be part of A/B testing where some users get one change while others don’t so the developer can see which features are preferred using real data.









  • For a pure magic example

    The Mistborn era 1 (books 1-3) are fantasty magic.

    Mistborn era 2 (books 4-7) occur hundreds of years later in that worlds “industrial/steam” age. Still, with magic.

    So, for example, some allomancers can push or pull on metals. In Era 1 that’s used for combat but also for rapid movement. An allomancer can fall from a wall, throw a coin and “push” off of it causing them to bounce forward and upwards. As they’re starting to reach the azimuth they “pull” the coin, catch it and repeat.

    They also in combat throw and then “push” coins or metal fragments like shrapnel.

    In Era 2. A sheriff (who’s an allomancer) leaps across a gully, aims and shoots a bullet into a wooden crate and then “pushes” on it to cross it.

    Another time during a shootout one “pushes” gunfire away so it deflects around him. Not guaranteed to get all of the bullets but useful in situations like that.

    There are other uses and other allomantic abilities but the entire shift of the format was just done phenomenally.

    Can’t recommend the Mistborn series enough