A British Airways Boeing 787’s landing gear collapsed during a botched test after a short mechanic asked a taller co-worker to insert a lock-out pin into a hole he couldn’t reach – only for the second mechanic to put it in the wrong place.
The Laurel and Hardy-style failure was detailed in a bulletin from Britain’s Air Accidents Investigation Branch (AAIB), explaining why the 787’s nose landing gear (NLG) was accidentally retracted during maintenance at Heathrow Airport in June.
“To prevent the landing gear from retracting, the procedure required pins to be inserted in the nose and main landing gear downlocks. However, the NLG downlock pin was installed in the NLG downlock apex pin bore which was adjacent to the correct location to install the downlock pin,” said the AAIB in its report.
British Airways Boeing 787 G-ZBJB after the nose landing gear retraction accident (Crown Copyright/AAIB/licensed under OGL)
The 787, G-ZBJB, was scheduled to operate a cargo flight on 18 June. When its pilots arrived early that morning they found ground engineers already working on the aircraft, pushing back its scheduled departure by 40 minutes.
Engineers were trying to clear error messages in the 787’s onboard fault recording system about one of the NLG’s door-closed solenoid valves. Clearing the message involved fitting lock-out pins to the airliner’s undercarriage to prevent it from moving, starting the hydraulic pumps and cycling the gear lever in the cockpit up and down. Without the pins, the landing gear would retract.
Unfortunately for British Airways, a Laurel and Hardy moment resulted in a very expensive blunder when the NLG unexpectedly retracted during the procedure. Two mechanics were sent to fit the downlock pins to the landing gear before confirming to a colleague in the cockpit that the gear was ready.
“As [Mechanic] 1 was not tall enough to reach the NLG locking pin hole without steps, he pointed to the location of the hole and [Mechanic] 2 fitted the NLG locking pin,” recounted the AAIB. Yet Mechanic 2 had fitted the pin to a very similar hole (the NLG downlock apex bore) next to the correct location.
Boeing 787 nose landing gear lockout pin location (Crown Copyright/AAIB/licensed under OGL)
An obvious human factors issue, the risk of fitting the downlock pin into the wrong hole had been identified years before after a similar incident [PDF] – yet aviation safety authorities gave airlines a three-year deadline from December 2019 (January 2020 in the UK, then under the EU Aviation Safety Agency) to fit a sleeve to the wrong hole, preventing the downlock pin from being inserted.
Predictably, the modification hadn’t been carried out on G-ZBJB and the results of the gear retraction were bad.
“The aircraft sustained damage to the lower forward fuselage, NLG doors and both engine cowlings, which had also struck the ground. Door 2L had been severely damaged by contact with the stairs positioned at the door aperture as the aircraft sank onto its nose,” said the AAIB.
Some of the people aboard the airliner suffered “minor” injuries as the nose crashed to the ground.
Most distros haven’t got to 5.15 yet, but openSUSE’s downstream project GeckoLinux boasts 5.16 of the Linux kernel and the latest Cinnamon desktop environment.
Some of the big-name distros have lots of downstream projects. Debian has been around for decades so has umpteen, including Ubuntu, which has dozens of its own, including Linux Mint, which is arguably more popular a desktop than its parent. Some have only a few, such as Fedora. As far as we know, openSUSE has just the one – GeckoLinux.
The SUSE-sponsored community distro has two main editions, the stable Leap, which has a slow-moving release cycle synched with the commercial SUSE Linux Enterprise; and Tumbleweed, its rolling-release distro, which gets substantial updates pretty much every day. GeckoLinux does its own editions of both: its remix of Leap is called “GeckoLinux Static”, and its remix of Tumbleweed is called “GeckoLinux Rolling”.
In some ways, GeckoLinux is to openSUSE as Mint is to Ubuntu. They take the upstream distro and change a few things around to give what they feel is a better desktop experience. So, while openSUSE has a unified installation disk image, which lets you pick which desktop you want, GeckoLinux uses a more Ubuntu-like model. Each disk image is a Live image, so you boot right into the desktop, give it a try, and only then install if you like what you see. That means that GeckoLinux offers multiple different disk images, one per desktop. It uses the Calamares cross-distro installation program.
SUSE has long been fond of less common Linux filesystems. When your author first used it, around version 5 or 6, it had ReiserFS when everyone else was on ext2. Later it used SGI’s XFS, and later still, Btrfs for the root partition and XFS for home. These days, it’s Btrfs and nothing but.
With GeckoLinux, these worries disappear because it replaces Btrfs with plain old ext4. There are some nice cosmetic touches, such as reorganised panel layouts, some quite nicely clean and restrained desktop themes, and better font rendering. Unlike Mint, though, GeckoLinux doesn’t add its own software: the final installed OS contains only standard openSUSE components from the standard openSUSE software repositories, plus some from the third-party Packman repository – which is where most openSUSE users get their multimedia codecs and things from.
We tried the new Cinnamon Rolling edition on our trusty Thinkpad T420, and it worked well. Because openSUSE doesn’t include any proprietary drivers or firmware, the machine’s Wi-Fi controller didn’t work right. (Oddly, it was detected and could see networks, but not connect to them.) So we had to use an Ethernet cable – but after an update and installing the kernel firmware package, all was well.
GeckoLinux did have problems with the machine’s hybrid Intel/Nvidia graphics once the Nvidia proprietary driver was installed. That’s not uncommon, too – Deepin and Ubuntu DDE had issues too.
This does reveal a small Gecko gotcha. Tumbleweed changes fast, and although it gets a lot of automated testing, sometimes stuff breaks. All rolling-release distros do. Component A depends on a specific version of Component B, but B just got updated and now A won’t work until it gets an update too, a day or two later.
This is where upstream Tumbleweed’s use of Btrfs can be handy. Btrfs supports copy-on-write snapshots, and openSUSE bundles a tool called Snapper which makes it easy to roll back breaking changes. This is a pivotal feature of SUSE’s MicroOS. In time, thanks to ZFS, this will come to Ubuntu too.
GeckoLinux doesn’t use Btrfs so doesn’t have snapshots, meaning when things break, you have to troubleshoot and fix it the old-fashioned way. If only for that reason, we’d recommend the GeckoLinux Static release channel.
Saying that, until we broke it by playing with GPU drivers, it worked well. Notably, it could mount the test box’s Windows partition using the new in-kernel ntfs3 driver just fine. Fedora 35 failed to boot when we tried that so that’s a definite win for GeckoLinux.
For Ubuntu or Fedora users who want to give openSUSE a go, GeckoLinux gives a slightly more familiar and straightforward installation experience. The author is especially fond of the Xfce edition and ran it for several years. The system-wide all-in-one YaST config tool in particular is a big win. ®
Recruitment tech company Globalization Partners is doubling its staff headcount in Galway to 320 in 2022 to aid its continuing growth.
Recruitment technology company Globalization Partners has announced plans to create 160 new jobs at its Irish base in Galway. The jobs boost will see the company double its Galway staff headcount to 320 in 2022. Jobs will be available across the board at the company’s Galway office, which serves as its EMEA centre of excellence.
The announcement comes following a major funding injection for the international firm. Globalization Partners recently raised $200m in funding from Vista Credit Partners, an organisation focused on the enterprise software, data and technology markets. The investment now values Globalization Partners at $4.2bn.
While its Galway facility will benefit from a major jobs boost, the company plans to continue to expand its share in the global remote working market. As well as the Galway growth, the company will also be expanding its teams in other locations.
Globalization Partners provides tech to other remote-first teams all over the world. Its platform simplifies and automates entity access, payroll, time and expense management, benefits, data and reporting, performance management, employee status changes and locally compliant contract generation. Its customer base includes CoinDesk, TaylorMade and Chime. The company’s new customer acquisition increased two-and-a-half fold from 2020 to 2021.
“Globalization Partners is uniquely positioned to capitalise on the massive opportunity we see ahead of us,” said Nicole Sahin, the company’s CEO and founder.
Sahin said her company’s combination of tech with its global team of HR, legal and customer service experts “who understand the local customs, regulatory and legal requirements in each geography we serve” were key to its success.
David Flannery, president of Vista Credit Partners said that the company’s role “in transforming the remote work industry has been truly remarkable.”
Flannery said that as a customer of Globalization Partners, his organisation had “witnessed first-hand” the company’s “best-in-class legal compliance, the quality of the user experience, and the deep expertise and support they provide,”
He added that the two companies would work to “further capitalise” on the “untapped” global remote working market, expanding their platform to new customers in new markets.
“Over the past decade, we have invested hundreds of millions of dollars in our business, building our global presence and technology platform to support the evolving and complex talent needs of growing companies,” said Bob Cahill, president of Globalization Partners. “With Vista as our investment partner, we will be able to drive further growth and continue building innovative products to meet the increasing needs of our customers at scale.”
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But bear in mind that with more than one device, or person, using your connection simultaneously, including updates and downloads when idle, slower broadband packages can quickly get choked.
Reposition your router
If your broadband connection is fast enough but your wifi is weak, there are things you can do. If possible, move the router closer to the centre of the house, or towards the rooms in which you need the strongest signal. Keep it in the open, not in a cabinet, and away from solid and metallic objects.
And try to position it away from dense walls, particularly those made out of concrete blockwork or with pipes and wires running through them.
Check your settings
Most modern routers will automatically select the best settings for your home, but you can manually check using the web interface of your router accessed through a browser on a computer. Consult the help pages for your ISP’s router for how to do so.
Wifi operating at 2.4GHz uses a range of frequency “channels”, only some of which do not overlap with each other. To reduce interference from your neighbours’ wifi, switch to channel 1, 6 or 11, which do not overlap, and therefore are less likely to cause or suffer interference.
If you have a connection under 200Mbps, enabling prioritisation or “quality of service” for your key devices, might help. This stops other things from sucking up all the available bandwidth – it will prevent a game download on an Xbox cutting off a video call on your laptop, for instance.
Set a strong wifi password using at least WPA2 security, not the lowest WEP option. This will make sure no wifi thieves can log on to your network and steal your bandwidth.
Check your devices
An internet slowdown may be down to your devices rather than your router. For older computers, upgrading the wifi adapter may help. USB wifi 5 adapters cost under £15, while the latest wifi 6 models cost about £50, but you will need a compatible router to take advantage of the extra speed.
For a non-portable device, such as a media streamer or a console, use an ethernet cable if it is close to the router, as this will be faster and more reliable than wifi.
If you have about 40 devices connected at once, consider disconnecting unnecessary ones to help provide more bandwidth for those you need most.
Weaker routers struggle with lots of devices connected at once.
Extend the wifi reach
If your wifi can’t reach parts of your house you can extend the signal of your current router with add-on gadgets.
Powerline networking devices use your home’s power cables to transmit data. They typically cost between £20 and £70. They plug into standard electrical sockets with one connected to the router via an ethernet cable, and others placed about the home providing ethernet ports and/or wifi for your devices. The speed you get through them is dependent on the condition of your electrical wiring.
Wifi extenders (£25-70) do a similar thing, but simply connect to your router via wifi, then rebroadcast it for other devices.
A network switch (under £20) can add more ethernet ports to your router if you need to connect more devices.
Upgrade to a better router
Replacing your existing router is often the most effective way to improve your wifi, but is also the most costly. Before committing to a third-party router, speak to your ISP as it may be able to provide you with a more modern one for free. Virgin and other ISPs are currently rolling out more powerful wifi 6-capable routers.
Otherwise, there are broadly two options: a beefy single router with much more powerful wifi broadcasting ability than the cheap one provided by your ISP, or a mesh system, which uses a series of satellites dotted about your home to blanket it in wifi.
Both typically use your existing router as a modem and then broadcast their own more robust wifi network.
Single unit wifi 6 routers start at about £60 but can reach the hundreds for powerful gaming-orientated devices. They connect to your old ISP box via ethernet cable, which means they are often easier to place in a more central area of your home. Running a long ethernet cable under floorboards, carpets, behind skirting boards or picture rails, or just under furniture can help keep things neat.
Good wifi 5 mesh systems start at under £100 for a triple pack of satellites, which should be enough for most homes with connections under 200Mbps. For those with faster broadband, good tri-band wifi 6 models cost about £300.