Live data from Hacker News

Heathrow scraps liquid container limit

bbc.com

541–550 of 839 posts

Re: Heathrow scraps liquid container limit

#541
post #344

How is this news? A lot of airports in Europe had had this for years and even in England there were terminals within the major hubs where this was already the norm

Schiphol had this for a while (several years I think, I don't fly often), but they reversed it a couple of years ago because European regulators didn't agree for some reason, and now liquids are forbidden again (discussed elsewhere in thread). So this surprises me and is news to me.

Re: Heathrow scraps liquid container limit

#542

This just adds confusion as to the purpose of all this. The motivation behind the liquid limits is that there are extremely powerful explosives that are stable water-like liquids. Average people have never heard of them because they aren’t in popular lore. There has never been an industrial or military use, solids are simpler. Nonetheless, these explosives are easily accessible to a knowledgeable chemist like me. The…

If you have access to nitric acid you don't need any obscure lore. 3 ounces of a simple concoction a high school chemistry student could make is enough to blow a hole in an airplane. You also stand a good chance of blowing yourself up on the way to the airport.

Re: Heathrow scraps liquid container limit

#543

This just adds confusion as to the purpose of all this. The motivation behind the liquid limits is that there are extremely powerful explosives that are stable water-like liquids. Average people have never heard of them because they aren’t in popular lore. There has never been an industrial or military use, solids are simpler. Nonetheless, these explosives are easily accessible to a knowledgeable chemist like me. The…

> This reminds me of the chemical swipes done on your bags to detect explosives. Those swipes can only detect a narrow set of explosive chemistries and everyone knows it. Some explosives notoriously popular with terror organizations can’t be detected. Everyone, including the bad guys, knows all of this.

I used to work at a place that sold a lot of fertilizers. We mostly sold stuff like Monoammonium phosphate or potassium nitrate.

One time while cleaning out a back storage room I came across an open bag of ammonium nitrate. I picked that thing up, carried it around, putting it on a cart and wheeling it around kicking up a lot of dust, all the kinds of stuff that you’d expect while cleaning out a storage room.

A day or so later I got on a plane and they swabbed me and my bag before doing so. I was startled when I didn’t raise any alarms.

I was completely under the misguided impression they something like ammonium nitrate would be detected on a person if they had handled it within a few days of being tested and that would have to explain myself.

Re: Heathrow scraps liquid container limit

#544
post #467

Earlier quoted context omitted.

It would be nice if there was an option to box it up and mail it back home or to a friend/family member for a fee. While a lot of people have throw away knives and wouldn’t care, many also have knives that are either expensive or have a lot of meaning. Maybe they would encourage more people to risk it and hope they don’t get caught, but a vast majority of these people aren’t criminals. When I was a kid I would always…

Changi does actually have self-service kiosks and postboxes in the transit areas for just this very purpose.

Had no idea - thanks for sharing! Shame that wasn't offered to me as an option at security!

Re: Heathrow scraps liquid container limit

#545
post #227

Earlier quoted context omitted.

I disagree. It is a burden and hindrance, but I'm pretty sure that if you just removed all the checks and let people board like in a bus, there would be complaints.

They're not complaining on the bus...

A bus isn't going to fall out of the air and land in the ocean. A bus isn't going to be hijacked and flown into the top of a building.

Re: Heathrow scraps liquid container limit

#546

Earlier quoted context omitted.

I wonder how many actual terrorists they pick up for saying "I'm here for terrorism"

On the other hand, if somebody said "I'm here for terrorism" and the immigration officer laughed that off, imagine the shitstorm if that person turns out to be a terrorist. For the individual employee the cost of wasting someone's time by escalating the case and detaining them is zero, the potential cost of letting someone slip by is realistically tiny but potentially huge

The point is that the situation must be really crazy if we reach a point where someone (mostly foreigner) saying "tourist" is being confused as to saying "terrorist". Airport are full of tourists, and exactly 0 person on the planet would reply with "terrorist".

Re: Heathrow scraps liquid container limit

#547
post #87

Earlier quoted context omitted.

Correct. In the US, the TSA is just a government jobs program for the lowly skilled or unskilled. It's all security theater. TSA Chief Out After Agents Fail 95 Percent of Airport Breach Tests "In one case, an alarm sounded, but even during a pat-down, the screening officer failed to detect a fake plastic explosive taped to an undercover agent's back. In all, so-called "Red Teams" of Homeland Security agents posing as…

I find it interesting to contrast this with my experience flying out of China. I was taken to a private room and shown the digital colored X-ray of my bag on which a box had been drawn around an empty lighter, I was asked to remove it myself and hand it over, and I went on my way. All in under 5 minutes, no pat down, no fuss, and no one physically rifled through my belongings. (Granted I was a tourist so that might w…

Flying out of HK after visiting SZ, I was quietly and quickly surrounded by men with guns after my bag was xrayed. I like nice clothes, especially neatly laundered and pressed shirts. I had an Altoids tin with a few brass collar stays for those shirts. Brass. With a pointy end.

Re: Heathrow scraps liquid container limit

#548

If you think you had it bad all these years, you should come and visit the Falkland Islands. I will be brief, but I will explain what going through the Mount Pleasant Airport (MPN) feel like for the average visitor. For added context: Only one flight by a commercial airline a week on Saturday, comes in around 1300, departs around 1500. You miss it, you wait another week. - The terminal is extremely small, the plane t…

Apart from a lack of space a lot of that is very normal, and it's hardly surprising things are a bit janky if they only have one flight a week.

Re: Heathrow scraps liquid container limit

#549

Earlier quoted context omitted.

UK uses the metric system. Why would anyone expect UK to follow the imperial system in $CURRENT_YEAR?

The UK uses an odd mixture of both depending on context. The use of "100ml" in airports is because using "3.519 fl oz" would be confusing to far more people. Even within the UK we use metric for small liquid measures like this (smaller liquid measures end up being weird stuff like "teaspoons" or "tablespoons"). And this isn't just because the UK uses a different fluid ounce to the US (100ml is 3.519 UK fluid ounces a…

Shots aren't necessarily 25ml, prior to metrication the legal situation had been that in England a shot was a sixth of a gill, in Scotland either a fifth or quarter depending on the establishment. The metric "Weights and Measures" legislation said each such licensed premises in the UK gets to pick, either 25ml (most common in England) or 35ml and they shall post a notice explaining to the public which volume they've chosen.

The differences in signage are because the UK's Road Traffic laws specify miles and yards still, whereas most other legislation specifies metric units, including for the waterways. So a sign legally required for an 18th century canal might say "100m" meaning metres, while an equally modern, legally required sign for a road built this century says "10m" meaning miles. This is embarrassing, but there's a strong feeling that somehow archaic unit systems are an important part of our heritage, and at least it's not as bad as when we propose getting rid of statues that celebrate slavers...

Re: Heathrow scraps liquid container limit

#550
post #428

Earlier quoted context omitted.

Right, but what do you think the alternative is? There is limited space close to the entrance of the terminal, it has to be rationed somehow. Also what happens in practice is people take advantage. A trust-based 30s wouldn't work. Even with the current fees you can hang around Heathrow drop off and see the police having to move people along, check unatended cars, etc.

There's limited space everywhere. It is rationed by people not wanting to be there. There's limited space at the baggage claim but nobody is charging you to be at the baggage claim.

> nobody is charging you to be at the baggage claim

Not yet.

Post reply on HN