Have you ever measured your blood oxygen during a flight at 30 - 38,000 feet? My one was down at 91%.

[makoilaci]

Flights that take more than 2 hours typically climb up to that heights. I checked around my neighbors and their ones were also down at 91%. A few coughs kicked it up to 97% but it quickly decreased again to the same level. I guess such a situation for 10-15 hours on overseas flights can be damaging. How about people who already have a low blood oxygen due to COPD, etc? Where will their oxygen level end?

[andymb]

You need to have a "fit to fly" examination when you get to a certain stage. I have been told I can't fly anymore, but can't remember at what stage I was told that. Sats of 91% is nothing to worry about, mine are typically around that sitting watching tv!! I don't know the answer to your question as to where the oxygen level ends I'm afraid. Andy

[makoilaci]

Thanks!

[stone-UK]

Hi

At sea level we breath 22% oxygen.

In a aircraft at cruising altitude this drops to 18%.

Still fine for normal lungs, not so good if you have a lung condition.

91% is within the acceptable levels of 88/92% at rest if you have a lung condition.

As you have realised a few deep breaths will increase your sats.

[makoilaci]

Stone, thanks. According to this website the situation is much worse and people above 60 should be careful even if their lung is healthy: ifr-magazine.com/oxygen-and...

[Kad21]

Mine fell to 78, and I had a fit to fly test, it really scared me, my levels are normally between 92 to 96 at rest.

[makoilaci]

Wow. Thanks!

[Hidden]

Excellent information from this page:

blf.org.uk/Page/Air-travel-...

[Suzy6]

Thank you BlakeyC have bookmarked the link in case the reunion in Australia is confirmed for next year. It will be a great help.

[minkymoo]

l had the flight test and was told l would have to have 2lt per minute if l was going on a plane so lm not sure if that is good or bad maybe one of you could help