Because many manufacturers use different decompression algorithms and every dive profile is different, it is difficult to generalize across the board how long a diver will have to wait before their computer’s no-fly time clears after a dive trip. The no-fly icon essentially represents a mandatory decompression stop before our bodies have off-gassed enough for ambient pressure to be reduced to more than 6000ft of altitude. How does the dive computer calculate our no-fly time?Įach computer manufacturer uses a slightly different method, however they will generally use their no-decompression algorithm just like they do on the dive. This is above the typically accepted ceiling of 6000ft, so we need to wait long enough for our tissues to off-gas before hopping on our flight home. While the cabin is pressurized, it is typically pressurized to around 8000ft. The cabin inside an airplane is pressurized, so why does it matter? If we ascend directly to altitude (generally above 6000ft), ambient pressure will decrease enough that we are at risk of having that nitrogen form bubbles just like if we overstay our no-decompression limits and make a direct ascent to the surface. After a dive, we still have a significant amount of excess nitrogen dissolved in our tissues. ![]() We are all aware of the reasons for staying within no decompression limits and performing safety stops, right? Well, think of your no-fly time as a “decompression stop” prior to flying. Understanding where that number comes from and how to use it to plan your trips is important to avoid missing dives, or worse, having to miss your flight back home! Why is there concern for flying after diving? How Long Should My No Fly Time Last After My Dive?Īs divers, you have all seen the little airplane icon on your dive computer with a countdown timer next to it.
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