I also believe that if the Main is either a PC-type parachute, or a
ram-air, a cutaway is required.
Some DZ's can afford the more advanced gear, but most are till using the
old T-10s (or MC1-1B). Since most students are after a "high speed
carnival ride", the training should be geared for a student making
less than 5 jumps. I believe not cutting away is the best bet for when
a T-10 canopy is used
Al Gettier
Teknekron Infoswitch
ihnp4!infoswx!al
convex!infoswx!al
As for their success, I quote Dan Poynter's book, The Parachute Manual:
"A 1955 survey was conducted to evaluate the frequency of reserve activations
(WADD TR 59-17). The troop reserve was activated 0.2% of the jumps and it fun-
ctioned properly 75% of the time. These were throw-outs under a main canopy."
Fred Wamsley ihnp4!sol1!s255 D8844
I know reserves don't always work perfectly, but when your average skydiving
center runs a FJC in 6-8 hours, I believe more students will be seriously
injured or killed screwing up a cut-away than seriously injured or killed
with reserve malfunctions.
Al Gettier
D 5850