Air travel after SCUBA

In article <ALj4d.7378$yg.6695@twister.nyroc.rr.com>,
"John Stewart" <jvstewart@webjudo.net> writes:

>Anyone experience problems getting on an aircraft shortly after doing a few
>days of SCUBA diving? From what I understand it is necessary to wait 36
>hours after doing 2 or more dives before you travel by air or you can get
>bent.

You can always get bent, even if you don't dive and don't fly...

However, to reduce the chance of getting bent to an acceptable minimum
the traditional advice has been to wait a minimum of 24hrs. Recently, data
have been collected which seem to show that a minimum of 18 hrs does
equally well.

All of this applies to flying in a pressurized aircraft in which the
cabin pressure altitude does not exceed 8000 ft. This include virtually
all commercial aircraft. If you are flying in an unpressurized aircraft,
or if you are traveling by land to altitudes in excess of 8000 ft, you
should take the precaution of waiting longer.

--
Charlie Hammond -- Hewlett-Packard Company -- Ft Lauderdale FL USA
(hammond@not@peek.ssr.hp.com -- remove "@not" when replying)
All opinions expressed are my own and not necessarily my employer's.

Anyone experience problems getting on an aircraft shortly after doing a few
days of SCUBA diving? From what I understand it is necessary to wait 36
hours after doing 2 or more dives before you travel by air or you can get
bent.

John Stewart

John Stewart wrote:
> Anyone experience problems getting on an aircraft shortly after doing a few
> days of SCUBA diving? From what I understand it is necessary to wait 36
> hours after doing 2 or more dives before you travel by air or you can get
> bent.
>
> John Stewart
>
>
general rule is 24 hours

John Stewart wrote:
>
> Anyone experience problems getting on an aircraft shortly after doing a few
> days of SCUBA diving? From what I understand it is necessary to wait 36
> hours after doing 2 or more dives before you travel by air or you can get
> bent.

If you get bent flying, you were bent when you got on the plane.

I've flown with as little as 6 hours from dive to fly.

Brian
Edmonton, Alberta
www.mossmanscuba.com

On Thu, 23 Sep 2004 02:29:41 GMT, Brian Nadwidny <nadwidny@excite.com>
wrote:

>John Stewart wrote:
>>
>> Anyone experience problems getting on an aircraft shortly after doing a few
>> days of SCUBA diving? From what I understand it is necessary to wait 36
>> hours after doing 2 or more dives before you travel by air or you can get
>> bent.
>
>If you get bent flying, you were bent when you got on the plane.
>
>I've flown with as little as 6 hours from dive to fly.

I've flown 18 hours after 6 days of hard diving. No problems. Or
maybe I just got lucky.

>
>Brian
>Edmonton, Alberta
>www.mossmanscuba.com

--
dillon

When I was a kid, I thought the angel's name was Hark
and the horse's name was Bob.

On Thu, 23 Sep 2004 02:29:41 GMT, Brian Nadwidny <nadwidny@excite.com> wrote:
>If you get bent flying, you were bent when you got on the plane.

Unprovable, unsubstantiated Bullshit.

>I've flown with as little as 6 hours from dive to fly.

So what? I've skated on thin ice, and petted strange pit-bulls
without getting bit.

What you have gotten away with in the past is immaterial.
Notwithstanding, you don't mention what kind of diving you
were doing.

Getting on a plane after a decompression dive on trimix with O2
is considerably less risky than getting on a plane after a week of
5 dives a day on air. Using the same algorithm that gets one out
of the water to get you to 10000 feet will often show that
your 6 hour wait was all that was called for.

e.g.
================================================== ===========================
E:\zplan>zplan
Waypoint at 240ft for 20:00 (24) on Trimix 18.0/45.0, PPO2 1.487, END 132
Norm Stop at 70ft for 1:00 (31) on Nitrox 50.0, PPO2 1.559, END 70
Norm Stop at 60ft for 2:00 (33) on Nitrox 50.0, PPO2 1.408, END 60
Norm Stop at 50ft for 3:00 (35) on Nitrox 50.0, PPO2 1.256, END 50
Norm Stop at 40ft for 4:00 (40) on Nitrox 50.0, PPO2 1.105, END 40
Norm Stop at 30ft for 7:00 (46) on Nitrox 50.0, PPO2 0.954, END 30
Norm Stop at 20ft for 9:00 (55) on 100% Oxygen, PPO2 1.605, END 20
Norm Stop at 10ft for 15:00 (70) on 100% Oxygen, PPO2 1.303, END 10

TOTAL DECO TIME: 41 minutes.
DIVE RUN TIME: 70 minutes.
CNS Total: 53.6%
OTU's: 103
Time to Fly: 5.0 Hours
================================================== ==========================

Not that I'd dive Zplan anymore, but the algorithmic implementation
is inscrutable.

For someone diving 5 or more hours a day for a week, the same calculations
will result in ~20 hours.

bullshark

"bullshark" <bullshark@gmail.com> wrote in message
news:hkv5l09g9m85320j7qa0nn41cuklk1jrk7@4ax.com...
> On Thu, 23 Sep 2004 02:29:41 GMT, Brian Nadwidny <nadwidny@excite.com>
> wrote:
>>If you get bent flying, you were bent when you got on the plane.
>
> Unprovable, unsubstantiated Bullshit.
>
>>I've flown with as little as 6 hours from dive to fly.
>
> So what? I've skated on thin ice, and petted strange pit-bulls
> without getting bit.
>
> What you have gotten away with in the past is immaterial.
> Notwithstanding, you don't mention what kind of diving you
> were doing.
>
> Getting on a plane after a decompression dive on trimix with O2
> is considerably less risky than getting on a plane after a week of
> 5 dives a day on air. Using the same algorithm that gets one out
> of the water to get you to 10000 feet will often show that
> your 6 hour wait was all that was called for.
>
> e.g.
> ================================================== ===========================
> E:\zplan>zplan
> Waypoint at 240ft for 20:00 (24) on Trimix 18.0/45.0, PPO2 1.487, END
> 132
> Norm Stop at 70ft for 1:00 (31) on Nitrox 50.0, PPO2 1.559, END 70
> Norm Stop at 60ft for 2:00 (33) on Nitrox 50.0, PPO2 1.408, END 60
> Norm Stop at 50ft for 3:00 (35) on Nitrox 50.0, PPO2 1.256, END 50
> Norm Stop at 40ft for 4:00 (40) on Nitrox 50.0, PPO2 1.105, END 40
> Norm Stop at 30ft for 7:00 (46) on Nitrox 50.0, PPO2 0.954, END 30
> Norm Stop at 20ft for 9:00 (55) on 100% Oxygen, PPO2 1.605, END 20
> Norm Stop at 10ft for 15:00 (70) on 100% Oxygen, PPO2 1.303, END 10
>
> TOTAL DECO TIME: 41 minutes.
> DIVE RUN TIME: 70 minutes.
> CNS Total: 53.6%
> OTU's: 103
> Time to Fly: 5.0 Hours
> ================================================== ==========================
>
> Not that I'd dive Zplan anymore, but the algorithmic implementation
> is inscrutable.
>
> For someone diving 5 or more hours a day for a week, the same calculations
> will result in ~20 hours.
>
> bullshark

Acutally Iv only been diving once on a resort course in a 30 feet shallow
two tank dive in Key Largo, FL You obviously know alot more than I do
about it. I was just trying to plan a trip to mexico and get in a 3 to 4
day certification and possibly a few more dives.

But thanks for the Info. Ill have to learn what all that stuff you just
said means.

John Stewart

John - get certified before you go. Are a least the classes - do the
referral dives there.

"Joe English" <jenglish@accessusn.net> wrote in message
news:VqqdnbArZNNtk87cRVn-tw@fidnet.com...
>
>
> John - get certified before you go. Are a least the classes - do the
> referral dives there.
>

Ok thanks for the advice Joe

bullshark wrote:

Heeeyyyy, it's our old (and I mean old in the nicest way) friend
bullshark; ever figure out that DIN valve thing yet?

> On Thu, 23 Sep 2004 02:29:41 GMT, Brian Nadwidny <nadwidny@excite.com> wrote:
> >If you get bent flying, you were bent when you got on the plane.
>
> Unprovable, unsubstantiated Bullshit.

No less bullshit than the current unproven, unsubstantiated
recommendations.

> Not that I'd dive Zplan anymore, but the algorithmic implementation
> is inscrutable.
>
> For someone diving 5 or more hours a day for a week, the same calculations
> will result in ~20 hours.

Calculations, shmalculations-algorithm, shmalgorithm. I'll let you slide
ruler boys argue about numbers while I continue to do what the numbers
say I can't do.

Brian
Edmonton, Alberta