Parasailing the next day after diving

[mstevens]

Not according my altimeter every time I've flown.

The only thing I would take from that is the assumption that your altimeter is inaccurate. I could understand one airliner with bad pressurization, but for all of them to be off beggars belief.

 

[mstevens]

Most of the time I've watched parasailing has been looking down from a high rise hotel or a hillside. Besides, would you really think twice about taking an elevator to the top of a tall building after diving? There are many thousands that are higher than you'll be when parasailing.

My personal take on parasailing is that it's a waste of time that could be spent underwater.

 

[WarrenZ]

I have repeatedly drove through moutains that are 3500' or higher than my dive site so 900' wont cause problems. Just dont try to go to 9000' or more.

 

[bluefrogfish]

parasiling won´t be a problem at all.
But my buddy had once a very suspicious toes itching driving to about 6000' after diving. The itching went away as when we drove down the mountain...

 

[Thalassamania]

The general wisdom is that if you must fly after diving you should keep your altitide to 500 feet (that made for some interesting trips coming back from the Channel Islands to the old Fremont airstrip). I guess the same should hold true for parasails and elevators. In this case I don't think that you will have any problem. You can go to 8,000 feet if you are in USN-Group C or less, and that will be your situation.

 

[tbaylx]

Aircraft are pressurised to a max differential pressure of about 8.5 ish PSI depending on the aircraft type. The higher they go the higher the cabin altitude is to maintain the constant pressure. So a heavy aircraft flying in the low 30 000 foot altitudes may have a cabin as low as 6000' If they are lighter and can climb to get better fuel economy/winds the cabin may go as high as 8500'. The cabin will never go to 10 000' or above unless there is a problem with the pressurization of the aircraft in which case you'll know about it quickly by an emergency descent/diversion and possible oxygen mask drop.
Also FYI 0.5 ATM is around 5000'. Hope this helps clear up a few misconceptions.

 

[Sideband]

Not according my altimeter every time I've flown.

From:
http://www.house.gov/transportation/aviation/06-05-03/06-05-03memo.html
Subcommittee on Aviation
Hearing on
The Aircraft Cabin Environment

Cabin Pressure

FAA regulations requires a cabin-pressure altitude of not more than 8,000 feet at maximal operating altitude of the aircraft under normal operating conditions. Serious health effects may occur in some people, such as infants and those with cardiorespiratory diseases, due to decreased oxygen concentration. Temporary pain or discomfort in the middle ear or sinuses may also occur.

I think you should get your altimeter fixed.

Joe

 

[Thalassamania]

For more data: Pressurization

 

[under water]

The only thing I would take from that is the assumption that your altimeter is inaccurate. I could understand one airliner with bad pressurization, but for all of them to be off beggars belief.

Maybe he is using GPS for altitude, not pressure??

 

[Guba]

I often dive in the Gulf of Mexico and then drive to my home, elevation 1040 feet. No problems, of course. (But don't think that just because some halfwit in North Central Texas does it, it's safe...I checked with authorities on the matter early in my diving career to make sure it would be all right. Never hurts to check, right? And that's what this thread is for.)