vision replied to leafyanna's topic in Tandem Skydivinghttp://www.heraldsun.com.au/news/the-amazing-survival-tale-of-thrillseeking-melbourne-man-brad-guy-who-leapt-from-14000-feet-and-had-his-parachute-and-reserve-both-fail/story-fni0fiyv-1226954611778 Made it a link for you. You are not expected to do anything, typically you will be asked to assume the exit position as you were trained. You may not know what has happened before you are already under your reserve. Malfunctions like the one there in Lillydale are very, very rare.
though a calculator is very easy, this is also very nice. A nice addition might be a lead weight and a total weight calculation so swoopers can adjust their weight according to an eight gains or losses.