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Airlines are running out of 4-digit flight numbers

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Re: Airlines are running out of 4-digit flight numbers

#191
post #122

Earlier quoted context omitted.

I know explaining a joke always makes it super funny, but… this is a NetEng joke about IPv6 being overbuilt.

IPv6 is seen and used directly by professionals, not the general public. Overbuilding it in the sense being mocked made sense.

Which explains why professionals have so eagerly adopted it over the last two decades

Re: Airlines are running out of 4-digit flight numbers

#192
post #137
post #123

This is the tipping point that will make the world switch from passenger flights to high-speed rail.

Maybe when a train costs less than an airplane ticket. But right now the train costs more and takes longer. Why would I do that?

You usually need to factor the whole trip as most trains start and stop in city centers while airports are sometimes very remote from the cities.

YMMV but where I live, I need to either pay for the parking at the airport, have someone shuttle me or take a taxi/regional train/bus to the airport.

For domestic use in my country, plane is competitive on paper, meaning some flights are much cheaper than train tickets. However the cheapest flights are the early and late flights which means regional train/bus to go to the airport are not an option. Usually you don't want to annoy friend/family very late in the morning/night because...well that's kind of rude. So you have to either use your own car and pay more for the parking than the actual plane ticket, or take a taxi that will also cost more than the plane ticket. Congratulations! The cost of your trip has already doubled or tripled from the advertised price! Now if you haven't thought of making your own sandwich add the aditionnal cost of buying food + drink at the airport and you will be adding again more than the original price of the one-way plane ticket! And that is without even mentionning the shady tactics of some cheap companies. Take a ryanair flight for instance, and once in a while they will ask you to check your luggage in one of their bagage check gauge and charge you whenever you have a bag that cannot stand upright on its own even if it fits the gauge and will force you to pay an aditionnal 70€ fee.

As for the time, it is also something where you have to consider the sum of all. My rule of thumb is regardless where I am flying, I know I will lose pretty much half a day. When doing sub 3h flights you are usually spending as much or more time commuting in/out of the airport and in the airport than flying.

On the other hand the train station will allow you to take your own drinks, and even if you didn't have time to make yourself a good sandwich, and don't want to pay for the more expensive options at railway station you will always find some cheap takeaways or supermarket close to it. The railyway station is usually in a city center as well which may be more convenient in many situations and you can reach the railway station 5 minutes from the departure time and you will still be fine.

Once you have factored all that, the train can often end up being the cheaper option, as well as the fastest one if this is an high speed train and you don't have to change train.

Re: Airlines are running out of 4-digit flight numbers

#193

Earlier quoted context omitted.

Done forget to have a secondary identifier to further divide the seat. I recommend using a short to represent the 65536 possible slices a seat can split. Then on the ticket, there would be an extension section that tells you the alias of the person that is about to board. We can call it SNI or Sitter Name Indicator. Another section could be an indicator if the rider is alive when boarding. We can call the extension a…

Given the history of airlines I'm not quite sure if you're joking or not. Sounds plausible ngl

It's ipv6 :)

Re: Airlines are running out of 4-digit flight numbers

#194
post #83

I love that so many people here think they can think about the problem for 10 seconds and come up with a solution that hasn't already been considered a thousand times and discarded.

You're no fun. Obviously any such 10-second solution is unlikely to work in practice. The interesting part is why, specifically a proposed solution won't work; proposing some and having more knowledgeable commenters shoot them down is a way to map out the complexities of the real problem quickly. It's a very good way to learn.

Re: Airlines are running out of 4-digit flight numbers

#195
post #32
post #11

The entire aviation industry feels like it is in need of a tech stack 100% rebuild. Systems like Sabre are 60+ years old.

Enormous path dependance. There's a photo in that article that shows the problem: the flip-tab sign that has space for four numerical digits. I was thinking they could just switch from 0-9 to 0-9A-Z but that photo showed why that would be a disaster. Plus any solution has to be approved for use worldwide. Fortunately the two-digit IATA codes have already switched to 0-9A-Z (e.g. JetBlue is B6) so allowing constrained…

True

And that's why they should have started thinking about this 20 years ago (or even before that)

Thinking of something like this: every new development and maintenance should be done with 5 digits in mind. While keeping it backwards compatible for 4 digits

Re: Airlines are running out of 4-digit flight numbers

#196
post #122

Earlier quoted context omitted.

I know explaining a joke always makes it super funny, but… this is a NetEng joke about IPv6 being overbuilt.

IPv6 is seen and used directly by professionals, not the general public. Overbuilding it in the sense being mocked made sense.

> IPv6 is seen and used directly by professionals, not the general public

Yes, that's the problem. It's unusable on your fucking home network.

Please, don't post again the 10 "concise" 50+ page documents that you "just" need to read to set up ipv6...

Re: Airlines are running out of 4-digit flight numbers

#197
A lot of the software used to coordinate this stuff is very ancient at this point. The fix is straightforward from a technical point of view but super complicated to implement because it involves replacing/fixing half a century old software systems in use in thousands of companies across the industry. Probably a lot of cobol and other crap that is still in use for this.

Re: Airlines are running out of 4-digit flight numbers

#198
post #58

Earlier quoted context omitted.

That would be a recipe for confusion among pilots and controllers. They rely on visual sighting of aircraft for some operations and have to maneuver in relation to each other so if the livery doesn't match the IATA code then that increases the risk of error.

All the baby AirAsias have virtually identical livery with different codes (FD, QZ, Z2), doesn't seem to be an issue

Since their fleets are based from different home airports, the inflight meal selection is different for FD/QZ/Z2. So, it actually comes in handy for passengers; no surprises.

Re: Airlines are running out of 4-digit flight numbers

#199
post #83

I love that so many people here think they can think about the problem for 10 seconds and come up with a solution that hasn't already been considered a thousand times and discarded.

There aren't that many solutions. You can go to 5 digit numbers, or use 4 characters with an expanded alphabet, or do nothing. What other solutions could there possibly be?

Re: Airlines are running out of 4-digit flight numbers

#200
post #83

I love that so many people here think they can think about the problem for 10 seconds and come up with a solution that hasn't already been considered a thousand times and discarded.

Yes, programmers typically like to do that. Btw, how about using colors?
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