N201MKTurbo

they work with Invacare concentrators. It is a compressor that compresses the output of their concentrators. It is called the home fill unit.

Both I imagine. They are not cheap, but the medical versions can be found cheap on Craigs List after grandma or grandpa pass away. The AC powered concentrators have been around for decades. The portable DC powered units are pretty new.

Just let them kill themselves and don’t worry about it.

I just use my hand to deflect some air in.

I suggest YOU don’t use it for two people so YOU can sleep at night.

The FAA mentions it as a thing. They don’t say it is good or bad. The regs just say oxygen. It doesn’t mention anything about where it comes from.

I have a Precise Flight demand regulator. It only supplies oxygen when you inhale. Even though it doesn’t flow any oxygen when you stop inhaling, your nasal cavity still has oxygen rich air that didn’t make it to your lungs. If you exhale through your nose, you will blow that air out, still wasting some O2. Not as much as with a continuous flow system.

http://airportjournals.com/aurora-airpark-under-the-radar/ BTW, I flew the Swift pictured in the article.

I remember back in like ‘84 or so, I was based out of the Aurora airport (01V). I was flying around and it looked like they were making a new highway out in the middle of nowhere. After a few days I figured it must be a runway. My buddies and I kept joking (maybe) about who would be the first one to do a touch and go on it. After all, there was nothing saying it was closed, or even an airport. I will have to check my logbook, but I think I landed there the first day it was open. Back then it was called the Front Range Airport. The first time I landed there there was nothing there except runways, taxiways and a ramp. No buildings of any kind and no paved roads.

It doesn’t have to be them who signs off on the ferry permit. Any A&P will do.

The IPC is your friend.

What’s wrong with the Brackett? A good Arizona product. My intake ducts always seem clean.

They should have the Lycoming inter cylinder baffle. New ones are not crazy expensive.

In the old days, pilots just stuck an oxygen hose in their mouth and sucked on it. Watch the old movie Test Pilot and you will see it.

With a cannula, you have to remember to breath in with your nose, as specified above, an exhale through your mouth. If you exhale through your nose, you blow out the bolus of oxygen in your sinuses. If you inhale through your mouth you won’t get any oxygen. Masks are for people who forget how to breath properly.

Actually, I did the PROTE two years ago. I could still do math problems after 5 min at 25000. The operator finally said “put your mask on”. I said I was good. He said he wasn’t going to open it up until I put it on. So I did. I just get very fatigued. I was breathing like Dr. Blue said about 20 years ago. I practice sometimes when I’m flying up high. It takes practice. When you are in the high teens, put on your pulse ox and take off your oxygen and practice breathing to see how high you can keep your SpO2. At 18000 I can usually keep it in the 90s. Just barely. If you start feeling stupid, put your oxygen back on. The breathing is to inhale as deeply as possible, slowly, then hold it for a few seconds, then slowly exhale as deeply as possible. Pushing as much air out as you can. Then repeat of course. It takes practice. There is an urge to breathe fast and shallow. That is bad. With practice the urge goes away.

I have been using a pulse ox for 20 years. I'm on my second one. The first was a very expensive medical grade that cost $600. The second was one I bought at the CVS that cost $45. They both seem to give the same readings. After a while using them, you get a feeling for it. I can usually call the reading before I see it. It is nice to have your feelings calibrated on a regular basis. If my pulse ox were to malfunction, I think I would know right away because it would be giving me a reading out of line with how I'm feeling.

I think the pleth wave has always been calculated internally, but I see the new ones display it. I think if you were getting a stable and reasonable pulse, you would have a good pleth wave.

But is that the fault of the Pulse Ox, or the patient, or how it is on the finger? We can assume we are in good health when we go flying.

A good review of current pulse oximeters: https://docreviews.me/2023/04/18/top-10-pulse-oximeters-of-2023-a-comprehensive-guide-to-choose-the-best-pulse-oximeter

It has been a while since I studied how pulse oximeters work, but from my recollection, they cannot get a solution without correlating the transmissions of the individual wavelengths with the pulse cycle. That’s why they are called pulse oximeters, not just oximeters. That’s why they all give your pulse rate, because they need it before they can give you an SpO2 reading. The way I understood the process, it can’t really be wrong. It is either no reading or the correct reading. The process has been known for a long time and is easy to implement using a fairly basic microcontroller.

If there is no regulation, then there is no regulation. You haven't shown me one yet. If you are curious, contact the FAA and ask them what the regulation is.

At this point I have spent 23 years of my working life as an engineer for FDA regulated medical device manufacturers. Inogen is a regulated medical device manufacturer. They cannot recommend in any way that their devices be used for any off label use. I'm sure that is why they made an aviation version. It is probably not marketed as a medical device and therefore not regulated by the FDA. They cannot approve of anyone using any of there medical devices for aviation use, because that is not what it was designed and approved for. Even if they are the exact same device. None of these regulations apply to the end user. if you buy one, you can do anything you want with it.

That applies to built in equipment. It doesn't apply to portable systems.

It is called CYA. There is no regulation.