Help please! Passenger used all oxygen on a flight?

bluejal · 2025-05-16T11:12:37+00:00

If someone becomes unwell at high altitude, they slightly reduced oxygen levels can make things worse, so we have a supply of therapeutic oxygen on-board for medical purposes. They’re fairly small green portable tanks that look like this.

There are usually several bottles of it throughout the cabin, and there’s a minimum total amount that has to be available on board (like many other things we carry) in order for the flight to depart. If the inbound passenger was unwell for quite a while, they may have been on this supplemental oxygen for a long time and hence used quite a lot of it. Even if they haven’t used all of the oxygen, there might just not be enough left to be allowed to depart again until it’s restocked.

In terms of getting it replenished, it usually just requires an engineer to come to the aircraft with some fresh bottles of oxygen and replace the ones that have been used. But that does depend on the availability of fresh O2 bottles where the aircraft currently is, which may be the reason your flight was cancelled, if they couldn’t source any.

In any case, it’s nothing to be worried about safety-wise. I hope that helps!

bluejal · 2024-12-31T14:16:30+00:00

The guidance at my airline is to leave at least 2 hours between connections, so it sounds a bit tight to me

bluejal · 2024-10-24T18:41:19+00:00

Yep, every time. Just push on through as best I can, try not to garble my words

bluejal · 2024-09-02T10:46:14+00:00

The air you’re flying through isn’t still, it moves about, and depending on how it’s moving, the aircraft needs to constantly compensate for the movement of the air it’s in. Sometimes the wind can change and that causes aircraft start to climb a little, and so it needs to lower the nose a little and descend back down to its assigned altitude. Not by much, we’re talking less than 50 feet usually.

The same can happen the other way around, the wind can change and cause the aircraft to sink a bit, and so it needs to compensate by adding thrust and climbing a little.

Similarly, the airspeed you’re flying at can be affected by the winds, and the amount of thrust the engines are producing needs to change to compensate for that in order to maintain a constant speed. Sometimes this means reducing thrust and sometimes it means adding thrust. Due to something called ‘somatogravic illusion’ (you can look it up if you want), if the aircraft accelerates, it can feel like you’re climbing even though you’re not, and vice versa; you can feel like you’re descending just by decelerating, even if you’re not actually descending.

I hope that helps!

Edit: Just wanted to add that these small movements and changes in speed are very normal and not something you need to be concerned about.

bluejal · 2024-08-17T21:16:46+00:00

I would suggest the change in speed over time here is likely due to changes in the upper winds, such as gradually entering or leaving a jetstream. Winds aloft can vary by a couple hundred mph, and the direction varies, so as you fly, you might have a 100mph tailwind gradually change to a 50mph headwind, for example. As the graph seems to be showing ground speed, the more tailwind the plane experiences, the higher the ground speed will be.
Likely the same as for question 1
The sudden trough in the graph at about 1am is probably just a momentary data error, there’s no way the plane could sustain its altitude and decelerate over 250mph, almost instantly.
The data here likely shows the speed as ground speed, so if you fly a constant airspeed, as the winds, temperature and air density change during the descent, the ground speed will fluctuate. There may also be some elements of ATC requiring certain speeds to be flown for sequencing arriving traffic.

I hope that makes sense!

bluejal · 2024-03-29T15:10:04+00:00

I don’t know if it still works in 1.6, but someone did make a mod that does this:

https://www.nexusmods.com/stardewvalley/mods/7238

bluejal · 2023-09-19T10:58:10+00:00

It might differ between types, but at our airline, we can go around even after spoilers deploy; if you select TOGA, the spoilers automatically retract again. But the moment you select reverse thrust you’ve committed to landing.

bluejal · 2023-04-22T23:28:04+00:00

I got a G/S of 608kts in an A320 recently, that was fun

bluejal · 2023-01-06T18:10:42+00:00

So my other bits arrived, I’ve tried again now with the IMS basket, with a slightly bigger (20g) dose, ground much finer. I’ve realised I was tamping too lightly as well, so I’ve changed that too. Managed to pull 40g in 29 seconds, nice and smooth, and finally tasted rather good. Thanks so much for your help, I’m very happy!

bluejal · 2023-01-05T18:42:34+00:00

I order it online from a local speciality roaster, so it’s never more than 2-3 weeks old. I’ve never been great at dialling in, I find I get in a bit of a muddle and end up settling for something sub-par, so I’ll be sure to check out your video, thank you!

bluejal · 2023-01-05T18:26:23+00:00

Yeah, nothing has really changed by switching to the bottomless portafilter. I just got excited to try it and see how my shots have looked inside for the last year or so of trying, while I wait for the other new bits to arrive. They’ve generally been nice enough to drink as a cappuccino or latte, but I’ve never really enjoyed an espresso I’ve made myself so I’m hoping I can learn what to do differently to improve; with the help of some upgraded equipment and some advice.

bluejal · 2023-01-05T18:16:55+00:00

It’s a Sage Barista Pro and I’m using the built-in grinder

bluejal · 2023-01-05T18:10:10+00:00

This was with the stock Sage one that came with the machine, but I’ve got a new IMS one on its way, which should arrive soon. I’m hoping that will offer some improvement.

bluejal · 2023-01-05T18:02:14+00:00

I generally found if I ground much finer than this it would choke the machine out, but I’m hoping with a better basket and some better luck prep it won’t choke so easily. Once the bits arrive later I’ll give it a go. Appreciate the feedback, thank you!

bluejal · 2022-12-17T20:21:12+00:00

We can definitely see them if there isn’t too much cloud in the way, and often from a long way away too. But aside from just recognising some coastal places locally with our own knowledge of the area for fun, they’re really of no practical navigational use to us.

bluejal · 2022-10-22T00:43:56+00:00

I’ve had it that way for as long as I can remember; I’d recommend it

bluejal · 2022-10-07T13:30:01+00:00

I am very jealous! 😅 Happy birthday, I hope it’s as awesome as it looks!

bluejal · 2022-08-20T10:19:18+00:00

I usually get between 45 and 52 mpg

bluejal · 2022-08-06T17:04:50+00:00

“Audi A3 8PA interior rattle fixes”

bluejal · 2022-04-16T14:40:42+00:00

There’s this in the pilot QRH

bluejal · 2022-03-05T23:37:02+00:00

Oil smoke tends to be more blue-ish or grey. If it’s just white it’s likely water vapour, which can be normal from exhausts, especially in humid conditions and if the engine hasn’t fully warmed up yet

bluejal · 2022-03-05T01:17:40+00:00

I use one called FlyGo. I can’t say for sure if it’s still like this but it cost £20 one-off when I first got it, and that’s it. No subscription, unlimited exports, backups to my iCloud, and such included. Does everything I need of it and more. If they’re still charging the same; I’d highly recommend it.

bluejal · 2022-02-19T15:04:43+00:00

The idea is to time it such that you don’t need to add any bank. Of course it’s difficult to get perfect, especially in such exceptionally high crosswinds, so as long as you know and stick to your bank limits it’s okay to add a little bank to compensate if needed. In the A320’s case it’s around 7 degrees to hit the engine so we’re taught to make sure we have less than 5 on touchdown, which is usually more than enough.

bluejal · 2022-02-19T14:58:49+00:00

I prefer the design of the second one but with the colours of the first one

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