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WiFi without internet on a Southwest flight

jamesbvaughan.com

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Re: WiFi without internet on a Southwest flight

#32
post #6

Glad someone looked into the flight tracker, I was always curious how real the data in it is. Although it doesn't answer my curiosity about how they manage to mess it up occasionally. I've had flight data from different flights pop up a few times on Southwest, which is never reassuring to see.

If it's the panasonic inflight system, it receives flight data from the FMS. If the system does not receive flight data from the FMS then it will not be up to date. Your browser could also be retrieving old cached content.

Basically there is nothing about this system to assure you, it's entirely a secondary data-delayed system that is not critical to flight operations and as such can be INOP at anytime and no one will care.

Re: WiFi without internet on a Southwest flight

#35

The speed unit looks more like knots than mph.

Good catch! I'm not very familiar with knots - what specifically makes the speeds here look like knots to you? edit: Updated the article. Thanks!

Airline planes never use mph but only knots.

Re: WiFi without internet on a Southwest flight

#36

Thats funny, I discovered the same thing a few months ago and built a CLI flight tracker[1] that uses the API. I've tried it across a couple of airlines and it worked almost perfectly across all of them, because they were all using the same in flight ISP. [1]: https://github.com/NalinPlad/OuterFlightTracker

That's cool! I had wanted to make something similar, but I didn't have enough experience with making TUIs to build it without using the internet for reference during the flight. I'm glad to that it's been done though!

Re: WiFi without internet on a Southwest flight

#37

I'm an Alaska (relatively) frequent flyer. That airline offers a free "messaging" plan, that lets you send and receive messages on apps like iMessage, Facebook Messenger and Whatsapp. Though, it somehow prevents images/attachments from coming through on those platforms. I've always wondered how this is implemented technically, and if it might be possible to setup some kind of protocol/wrapper to send data that looks…

Google Voice always works for me too FYI.

Re: WiFi without internet on a Southwest flight

#39

The speed unit looks more like knots than mph.

Good catch! I'm not very familiar with knots - what specifically makes the speeds here look like knots to you? edit: Updated the article. Thanks!

Your ground speed plot hovering around 500 mph would be ~800 km/h which is oddly slow for an airliner, unless you were facing strong headwinds the entire way.

The nautical mile is historically the common unit for marine and air navigation.

Re: WiFi without internet on a Southwest flight

#40

The speed unit looks more like knots than mph.

Good catch! I'm not very familiar with knots - what specifically makes the speeds here look like knots to you? edit: Updated the article. Thanks!

487 miles per hour would only be 0.63 Mach which is very slow.

487 knots would be 0.73 Mach which is much closer to the rule of thumb 0.78 Mach cruise speed expected.

https://krepelka.com/fsweb/learningcenter/aircraft/flightnot... (and yes, it's a simulator but it's still good for real world)

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