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Whiteboards used after Gatwick flight information screens fail

bbc.com

71–80 of 117 posts

Re: Whiteboards used after Gatwick flight information screens fail

#71

I struggle a little to see how there is a single point of failure here (a fibre optic cable). I’d have thought the screens were powered by a device plugged into a LAN. Would be interested if anyone knows the architecture of such screens and why there is such a single point of failure in the whole airport.

As is common in cases like this, there probably was a redundant link, but the link and its failover procedure probably wasn't recently tested.

Re: Whiteboards used after Gatwick flight information screens fail

#72

Earlier quoted context omitted.

Also, the full-manual solution of having whiteboards on standby covers a much broader spectrum of failures.

As well as a whiteboard on standby, you also need 1 person per whiteboard to keep them updated. In an airport as big as gatwick, you probably can't get away with anything less than ~10 whiteboards (5 per terminal). Which means 10 people. Not many companies have 10 spare people on site ready to act as emergency whiteboardmen.

Can’t one person update multiple whiteboards?

Re: Whiteboards used after Gatwick flight information screens fail

#73

Earlier quoted context omitted.

Whats wrong with that? It seems to have worked. Sure not ideal, but better than canceling flights and shutting down the airport.

Obviously it’s better than shutting down the airport. But is it better than the alternatives Someone1234 proposed? That was the question.

I don't have the data of course but it does seem better. Those alternative are pretty expensive to build and maintain, have to be tested regularly and are prone to failure. For a situation that has a very low probability of happening, whiteboards do seem more reasonable, that's a very lean approach!

Re: Whiteboards used after Gatwick flight information screens fail

#74
post #45

Distantly related but when I was in Europe decades ago I was at a train station where they had a massive split-flap display ( I want to say at a couple places ). I loved watching it update. Aesthetically it was so much better than big super bright screens.

The board in Utrecht Centraal (the Netherlands) was taken down a few years ago, but you can still enjoy it in all its clackety goodness as https://itunes.apple.com/nl/app/blauwe-bord/id474162209 -- developed by the railroad company itself and showing real data off their open API.

Re: Whiteboards used after Gatwick flight information screens fail

#75
post #9

Earlier quoted context omitted.

Same. That is a really poorly worded headline.

https://en.wikipedia.org/wiki/Garden-path_sentence

This is the opposite of a garden path sentence: the first verb really is part of the sentence's main clause - i.e. the meaning of the sentence is "Whiteboards [are] used..." instead of "Whiteboards...fail".

Re: Whiteboards used after Gatwick flight information screens fail

#76

Earlier quoted context omitted.

What you're looking for is called a Solari Board, there's some mesmerising videos of them around, and a few places still have them!

The main international terminal at Auckland airport still had a huge Solari board until just a few years ago (~2012). Sadly, they had to go digital in the end due to spare parts becoming difficult to source. According to Wikipedia, there are still some airports (eg Frankfurt) and many rail stations that still have them in active service.

The San Francisco Ferry Building has one that's in use today.

Re: Whiteboards used after Gatwick flight information screens fail

#77

Earlier quoted context omitted.

What you're looking for is called a Solari Board, there's some mesmerising videos of them around, and a few places still have them!

There's a company in the US that will make you one/rent you one, you can even control it via API. They sound really cool too.. I think I need to expense one for my office! https://www.oatfoundry.com/split-flap/

Yeah if you have to contact them to get a price.... dang.

Re: Whiteboards used after Gatwick flight information screens fail

#78
post #10

Earlier quoted context omitted.

Perhaps they could have gone with a connectivity vendor with an extensive 4G network for backup if the (inexplicably) non-redundant fixed line was cut.

They're with Vodafone who has that.

The problem is that it's the UK and mobile coverage isn't exactly world class here. You can get more consistent and reliable coverage towards the Russian border than you can around London.

Re: Whiteboards used after Gatwick flight information screens fail

#79
post #39

I struggle a little to see how there is a single point of failure here (a fibre optic cable). I’d have thought the screens were powered by a device plugged into a LAN. Would be interested if anyone knows the architecture of such screens and why there is such a single point of failure in the whole airport.

According to this they have just finished rebuilding their network... https://www.computerweekly.com/news/252441044/Gatwick-Airpor...

Oh I love it

[Gatwick has launched an app] for internal staff at the airport, such as shop assistants, baggage handlers and train station employees. ... He says the need for the app stems from some passengers entering “panic mode” and expecting to get flight information from anyone who appears to work at the airport. They may approach an employee in a non-passenger-facing department who has no more information than they do. ... “Passengers sometimes get more information from Twitter and Facebook feeds than from staff on the ground,” says Chacko.

“This is an attempt to bridge that communication gap and make everyone look smarter and more up to date.”

I wonder how well it worked today

https://www.computerweekly.com/news/4500269843/Gatwicks-Airp...

Re: Whiteboards used after Gatwick flight information screens fail

#80

Earlier quoted context omitted.

These screens build information from multiple sources inc. airlines, ground control, and in some cases airport management. They're typically run off-site at a data center since that provides high resiliency and some data is sourced from outside the airport anyway. If the airport has a dedicated fiber channel between their data center and airport itself and it was damaged, this could be the result. The question I'd as…

> why they have no fallback strategies They do. It's the whiteboards. Whiteboards are cheap, resilient and robust. Exactly what one wants for a backup.

It's a good overall plan C.

But why does the data link itself have no fallback? An important data link should have multiple dissimilar backups.

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