ltdiver 3 #1 September 19, 2002 Interesting happening on my way back from SDC and Nationals last week. The commercial flight we were in, on our way home, was just 45 minutes into the flight and already at its cruising altitude of 31,000' for 30 minutes when my dytter went off! It is an older style dytter (the one with the little brass dial that you can rotate around to set the 'approximate' altitude it will sound at). It was in my camera helmet, in my camera bag under the seat ahead of me. So, why did it go off at such an ungodly altitude? Made my eyes grow wide, but nobody else seemed to notice. ltdiver Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
PhreeZone 20 #2 September 19, 2002 I know they lower and raise the internal pressure of the cabin in flight.... that might have some effect on it.Yesterday is history And tomorrow is a mystery Parachutemanuals.com Quote Share this post Link to post Share on other sites
AndyMan 7 #3 September 19, 2002 I once had my ditter go off three times at about 3:00am the same night while I was sleeping. I had to get up and turn the damn thing off. _Am__ You put the fun in "funnel" - craichead. Quote Share this post Link to post Share on other sites
quade 4 #4 September 19, 2002 Absolute cabin pressure depends on the make and model of the particular aricraft you're flying in. Some aircraft can withstand a greater or lessor difference between the pressure inside the cabin and the pressure outside the cabin. Generally speaking, the range in cabin pressures at cruising altitude will be the equivilent of anywhere from about 4,000 to 8,000 feet MSL. My -guess- is that your older style Dytter was set at about 4,000ish feet. If I recall correctly, they'll trigger at that altitude on the way UP to altitude as well as a check that they're working -- right? So, my guess is that is what you heard.quade - The World's Most Boring Skydiver Quote Share this post Link to post Share on other sites
ltdiver 3 #5 September 19, 2002 Absolutely! I asked the airline captain on the way out the door what barometric pressure the cabin was set to during the flight. He unblinkingly told me. Then converted it to 5,000' AGL! Now stay with me... The last dive that I did at SDC was the 10-way competition. Break-off for my team was 4,500'. SDC's elevation is 500' (or there abouts, eh DiverDriver or Kallend?). So, upon conversion, the barometric pressure stated was exact for my dytter that was set at 5,000' AGL! Interesting that you should note the dytter checks itself. I does this on the way up, passing your set altitude. This wouldn't have surprised me if it alterted 2.5 minutes after take-off. But this happened 45 minutes into the flight. Didn't think the older dytter did a check sequence after that. Only the newer ones. Or am I incorrect? But the pressure reading it took was accurate. btw, this Super80 jet climbs at 2,000' per minute (per the captain). Wow, what a jump ship that would make! ltdiver Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
indyz 1 #6 September 19, 2002 Do you mean MSL? Quote Share this post Link to post Share on other sites
ltdiver 3 #7 September 19, 2002 AGL=Above Ground Level. MSL=Mean Sea Level. In my post I was equalling the two.Good catch. (must be tired tonight. Still on SDC time). ltdiver Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
drenaline 0 #8 September 20, 2002 dytter: *BEEP**BEEP**BEEP* Passengers: BOMB!!!!!!! Skydiver: hahaha! I think its better to turn the dytter off in a flight. HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
ltdiver 3 #9 September 20, 2002 Quotedytter: *BEEP**BEEP**BEEP* Passengers: BOMB!!!!!!! Skydiver: hahaha! I think its better to turn the dytter off in a flight. Exactly what I thought, but nobody around me seemed to hear my muffled dytter sound. I only noticed it 'cause my ear is tuned for that sound. btw, the old style dytter doesn't turn off. ltdiver Don't tell me the sky's the limit when there are footprints on the moon Quote Share this post Link to post Share on other sites
drenaline 0 #10 September 20, 2002 Quotemy ear is tuned for that sound Good thing you didn't jumped to the floor then Arched, reached, pulled! HISPA 21 www.panamafreefall.com Quote Share this post Link to post Share on other sites
quatorze 1 #11 September 20, 2002 i was in the town of my old college and was at my old college bar when some girls cell phone started beeping just like the first alarm that my dytter makes. Me being half smashed by this time, I would be putting it mildly if I said that I was startled a little by it. Kind of embarrased my self by jumping and spilling my beer into my crotch. I'm not afriad of dying, I'm afraid of never really living- Erin Engle Quote Share this post Link to post Share on other sites
