And if you missed on page 2, there is a professional stunt pilot video, breaking the wings in flight (which seems to be straight and level) somewhere in Texas, because of the previously induced airframe stress. I'm sure he knew how to do the maneuver, he preflighted the plane properly, and still he died. I don't want to be the guy whose wings fall off in straight and level.
Do you have a link? No such video can be found on page two.
Sure. What I don't see is how it relates to this argument. What we ARE talking about is an untrained pilot -- Holocene -- trying to perform the maneuver in a non-aerobatic aircraft. This is where there is a high potential for performing the maneuver incorrectly. The result of which is higher than normal aerodynamic loads and stresses, which could damage the aircraft.
I never said it was OK for anyone, either a trained pilot, or especially an untrained pilot to be doing any kind of aerobatics in any kind of airplane. All I'm saying is that a properly done barrel roll is not unsafe if executed properly, even if the plane is not certified to do aerobatics, which is exactly what the OP was asking.
Every time threads like this pop up (and by "like this" I mean threads where the topic of discussion isn't always as simple as "yes" or "no"), a "yes" or "no" consensus is reached upon, and anyone with a stance even approaching "no" is vilified and insulted. Its like as long as you're on the "right" side of the argument, you can just say whatever you want, even if there is no evidence to back up what you're saying. Its intellectually dishonest.
It bothers me that people here are so polarizing. Its either you toe the party line and hold the belief that anyone doing a barel roll in a un-certified airplane makes you an attempted murderer and will, with 100% certainty cause a death in the future, OR you are an attempted murderer who is going to with 100% certainty kill someone since you are a "murderer enabler". Its stupid, and is what causes me to always take the "devils advocate" side (if you want to call it that) in these mob-rule threads.
If by "unprovoked" you mean the aircraft is sitting on the ramp at one G and zero knots, sure. But any time the aircraft is in flight, there are forces being imparted on it that could be the proverbial straw breaking the back.
Yes, it IS possible to have structural damage severe enough that failure/breakup occurs with only "ordinary" in-flight forces being imparted -- and which does not feature damage visible during a preflight walk-around.
People do dumb crap in rental airplanes all the time. I doubt theres a single C152 flying today that hasn't been rolled or looped (which is what I meant when I said "flip" earlier), yet you don't hear of C152's breaking apart on a daily basis. I'm sure it's possible, but Its not even remotely common enough for everyone to be taking such a hard line stance on the matter. But hey, if you all can provide me evidence that airplanes are falling out of the sky straight and level, I'll sure change my stance.