drenaline 0 #1 November 7, 2002 According to PADI last seminar called "Flying After Diving 2002" held in Durham, NC, USA in May of 2002, new recommendations were stablished; by implementing them they are considered RULES. For flights between 2,000 and 8,000 feets of pressurized cabin (600 to 2,400 mts) Only one SCUBA dive: wait 12 hours. Two or more dives: wait 18 hours. (before you had to wait 24 hours) Dives with decompression: wait 18 hours. (before it was 24...) For flights that are less than 2,000 feets (600 mts) of cabin pressure, you don't have to wait! HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
Cornholio 0 #2 November 7, 2002 So what is normal cabin pressure on a commercial airline ? If it's different, can you ask the pilot every trip ? Butthead: Whoa! Burritos for breakfast! Beavis: Yeah! Yeah! Cool! bellyflier on the dz.com hybrid record jump Quote Share this post Link to post Share on other sites
Spy38W 0 #3 November 7, 2002 QuoteSo what is normal cabin pressure on a commercial airline ? If it's different, can you ask the pilot every trip ? Fair guess is 8000 feet -- Hook high, flare on time Quote Share this post Link to post Share on other sites
drenaline 0 #4 November 7, 2002 Quotecan you ask the pilot every trip ? They normaly have some kind of standard depending on what altitude the plane will fly. Can't tell you what is the cabin pressure on a commercial airline, have no idea, maybe pilotdave can answer that. HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
bobsoutar 0 #5 November 7, 2002 [So what is normal cabin pressure on a commercial airline ? ] I believe it is supposed to be 5,000' and the maximum allowable is 8,000'. Quote Share this post Link to post Share on other sites
Sonic 0 #6 November 7, 2002 On a flight to the US, my friend took his alti on the plane and it read 5000'.----------------------------------- It's like something out of that twilighty show about that zone Quote Share this post Link to post Share on other sites
bobsoutar 0 #7 November 7, 2002 These seem incredibly vague guidelines, even for PADI. I would check your dive profiles very carefully and then make your own decisions about flying. Quote Share this post Link to post Share on other sites
nicknitro71 0 #8 November 7, 2002 I never SCUBA 24 h prior flying back. As simple as that. On your last day just lay out in the sun! If you do both, skydive first and then lock up your gear and SCUBA.Memento Audere Semper 903 Quote Share this post Link to post Share on other sites
diverdriver 6 #9 November 7, 2002 Quote[So what is normal cabin pressure on a commercial airline ? ] I believe it is supposed to be 5,000' and the maximum allowable is 8,000'. DING DING DING......We have a winner! But we actually have the masks drop only when cabin altitude is at or above 14,000 on my plane. So, if you had gone scuba diving and the airliner had an issue with its' pressurization system that allowed it to go above 10,000 but less than mask deployment altitude then you might want to consider telling a flight attendant if you flew before it was recommended you do so. You could be headed for problems. Chris Quote Share this post Link to post Share on other sites
vidiot 0 #10 November 8, 2002 Chris, shouldn't he be even more concerned when the masks drop? Although the oxygen level in his breathing air is raised by using the mask, the air pressure in the plane would be still lower. Which, in the end, is the main problem with flying after diving. At least that's how I remember it. K.My Logbook Quote Share this post Link to post Share on other sites
diverdriver 6 #11 November 8, 2002 QuoteChris, shouldn't he be even more concerned when the masks drop? Although the oxygen level in his breathing air is raised by using the mask, the air pressure in the plane would be still lower. Which, in the end, is the main problem with flying after diving. At least that's how I remember it. K. That is exactly correct. That is more of a concern than just not being able to breath 100% O2. Thanx. Quote Share this post Link to post Share on other sites
drenaline 0 #12 November 8, 2002 problems with flying after diving is that the nitrogen bubbles get to big and clog a vein or artery but the expansion of the particles by going up is less almost nothing in comparison from undersea to sea level, What is the ATA pressure at 14k feets? almost nothing. Trust me for those test to have been called new rules there must of been a lot of testing, trials, guinney pigs etc... If you breathe oxygen it will help the tissues and might or will prevent the N2 bubbles from clogging. Of course that almost all the tests are made using healthy test subjects but if you drink alcohol or smoke you might want to rethink these new rules cause the body acts in a different ways with this substances inside. HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
Hooknswoop 19 #13 November 8, 2002 I was a professional safety diver for a year. Max depth was 40 ft, for a maximum of 3 1/2 hours on 46% NITROX. I was concerned about flying after diving. I searched the web, contacted Navy and civilian research centers, and talked to one the the cool doctors at the NBL. I learned 4 things about flying after diving. 1) Even after all the research, they really don't have difinitive answers. 2) No one will give you a diffinitive answer for the minimum dive-to-fly time. 3) The best informormation I could find was high altitude diving tables. Diving at altitude is almost exactly the same thing ass flying after diving. 4) Pre-breathe pure O2 w/ a full face mask, like fighter pilots, wear for 30 minutes after diving and you are good to go to fly. I did a little experimentation on my own. Going from 0 MSL to 14,000 MSL within 1 hour of a dive profile of a 2hr dive w/ a 2 hr surface interval, then another 2 hr dive w/ a max depth of 40ft and breathing 46% NITROX reveiled no effects of DCS. If I were to fly after diving these days, I would use high altitude diving tables. Hook Quote Share this post Link to post Share on other sites
drenaline 0 #14 November 8, 2002 I've been a PADI Dive Master for 3 years now and been diving for 10 years now, so I can't talk to much about the new rules (kinda ethics thing). >>1) Even after all the research, they really don't have difinitive answers. thats correct, since all the bodies are different some are more sensitive to the nitrogen than others (like the anaesthesia works different for every one), if you are a healthy sports man then most prolly is that the tables will be right for you but if you are a fat non sportsman, drinker and smoker kinda man then you should be a lot more conservative on the tables and try to follow the 24 hours after diving. Remember the dive tables were first made using male healthy regularly exercised NAVY soldiers (or test soldiers) and looking how the pressure affected them the time tables were made (first diving table made was the NAVY (cause they had the test subjects) then the others took that one as base). Can't talk to much about nitrox cause I have never used it. >>2) No one will give you a diffinitive answer for the minimum dive-to-fly time. I always tell my students or the group am taking to wait 24 hours just to be sure they wait at least 20 hours, some don't like to wait the 24. HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
