Code-sharing is a headache for customers. Trying to find your flight on a rotating screen is frustrating, and having a different flight number on your ticket compared to the actual flight is just confusing. We should do away with code-share numbers and use the operating airline’s flight number instead.
Airlines are running out of 4-digit flight numbers
271–280 of 461 posts
Re: Airlines are running out of 4-digit flight numbers
#272how about they help jumpstart the economy and hire engineers to fix the problem?
Re: Airlines are running out of 4-digit flight numbers
#273> Here’s the full answer, along with how they triage the problem – for instance by assigning the same flight number to more than one flight a day (although that means they need for it to be flights that would never both be in the air at the same time, such as where the same plane is used and can’t reasonably be substituted) This sounds like it's calling for trouble! Whenever I hear that any IDs could be "recycled", I…
Last call for passenger jll29 for flight seven dee eff eff eight two nine one, three eff eight nine, four zero four zero, bee eight see three, bee two zero zero seven six see zero dee dee ee ee.
Re: Airlines are running out of 4-digit flight numbers
#274Earlier quoted context omitted.
Are you sure that’s a real flight number, and you’re not confusing it with AAL777 (which would be AA’s ICAO code, AA being IATA)? I don’t think alphanumeric flight numbers are a thing currently.
AF296Q was a flight which crashed in 1988 They are rare though
They are not very rare. Letter suffixes are very common in Europe to avoid potential ambiguity. However they do not change the actual flight number portion. https://www.flightradar24.com/blog/clearing-up-call-sign-con...
Re: Airlines are running out of 4-digit flight numbers
#275I wonder if they have enough 2 digit letters to expand their usages.
Perhaps American Airlines could have both AA & AB, so they would then have 20k flight numbers to use?
Re: Airlines are running out of 4-digit flight numbers
#276Earlier quoted context omitted.
IP addresses (especially IPv4) are not even supposed to be globally unique. How many 192.168.1.1 devices are out there? How many different distinct physical boxes respond to traffic going to 1.1.1.1?
You're right but for the wrong reason. You are referencing the private blocks that are designed for private use. The vast majority are not designed for private use. The reason it's not unique (using my rudamentry understanding of networking) is because multiple routers can broadcast the same IP so devices can use the closest router. However I think it's fair to say IP address are intended to be unique to an org while…
> You are referencing the private blocks that are designed for private use.
Sure, but the person I'm replying to wasn't making a distinction here. They're just saying, "Have you ever changed the static IP address of a computer", where does that exclude RFC1918 IP addresses? I'm right for the right reasons IRT to the person I'm replying to. There are IP addresses which are absolutely not globally unique in any way, shape, or form by design.
> I think it's fair to say [public] IP address are intended to be unique to an org while private ips are not.
"Unique to an org", that's massively different from "globally unique" which is what the person I replied to suggested.
> multiple routers can broadcast the same IP so devices can use the closest router.
100% correct here, that's the biggest reason why you'd have an IP address shared among a lot of different devices.
Re: Airlines are running out of 4-digit flight numbers
#277> Here’s the full answer, along with how they triage the problem – for instance by assigning the same flight number to more than one flight a day (although that means they need for it to be flights that would never both be in the air at the same time, such as where the same plane is used and can’t reasonably be substituted) This sounds like it's calling for trouble! Whenever I hear that any IDs could be "recycled", I…
I'm certain each flight has its own completely unique ID buried somewhere in a database. But, shorter codes can be spoken into a radio faster and with lower probability of misinterpretation - both critical features for air traffic control. Those shorter codes will necessarily be reused, it's just a question of the time interval between re-uses of any particular code. I faintly recall seeing two Southwest flights from…
Tangentially, train 'headcodes' in the UK are not unique for various historical and convenience reasons. They're supposed to be unique within a given 'area' and period of time, but it's not very well specified what either of those are.
It rarely causes problems, but very occasionally does.
Re: Airlines are running out of 4-digit flight numbers
#278Clearly the successor solution is to use eight groups of four hexadecimal digits each, separated by colons. Then each individual seat and peanut could be addressed to it's final destination. More seriously the solution suggested of giving the 3 companies other unused prefixes like D* U* and A* to use with their codeshares and non rev flights to start seems the easiest.
Having multiple prefixes per airline doesn't seem trivial, given that this historically wasn't a thing. I could imagine a bazillion code snippets of if flightNumber.startsWith(OUR_AIRLINE_CODE) that might be incredibly painful to fix on short notice.
At least the pain only has to be dealt with by the companies that wrote code like that?
Re: Airlines are running out of 4-digit flight numbers
#279Earlier quoted context omitted.
I don't really understand. My router gives me an IPv6 address...
Do you understand on what basis? Do you know enough to assign addresses in a way that you, not your router, wants? Can you ssh/other forms of remote into any machine that accepts ssh on your local network using only ipv6? Can you redirect ports to specific local machines using only ipv6 (that implies they keep constant addresses)? Can you easily switch between two internet connections going through different routers…
Do not "ssh/other forms of remote" using ip addresses. Use domain names or local domain. It is easier to remember, is more secure (if configured in DNS), and less prone to errors.
> Can you redirect ports to specific local machines using only ipv6 (that implies they keep constant addresses)?
Yes. Use domain names in configuration files. It more robust, easier to read, and is better protected against network changes on the local network.
I have been part of multiple ISP changes and searching through configuration files for ISP specific IP address ranges is never fun. It wastes time and is prone to errors. In enterprise settings domain names rarely changes and even when they do, the old primary name are usually retained for backward compatibility. An ISP can get replaced fairly quickly if an alternative is cheaper or provide a better service.
> Can you easily switch between two internet connections going through different routers that are plugged into the same switch for any machine on your local network using only ipv6?
Are you talking about BGP? BGP is a fairly complex protocol and uses some archaic configuration syntax, but even so there are generally no differences between ipv4 and ipv6. It is the same pain making sure both ipv4 and ipv6 switch between the two routes correctly.
Re: Airlines are running out of 4-digit flight numbers
#280I 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.
Haha, yes. There are always assumptions to make or constraints to consider. But they are also often not obvious, so...
A quote by Fry from Futurama comes to mind:
> Zoidberg: All 6,000 hulls have been breached! > Fry: Oh, the fools! If only they'd built it with 6,001 hulls! When will they learn?