Le mardi 2 février 2016 13:41:43 UTC+1, Dan Daly a écrit*:

You may recall the ETA spin test with one wing full/one empty led to a crash. Both CS-22 AL1 and the ETA test are available by mr. google.

No. The Eta crashed when trying to recover from a spiral dive (dry). The load on the rudder simply snapped the tail boom.

The ASH25 did crash during flight testing when spinning with water in only one wing. The centrifugal force of the water made the wing skin pop, and Martin Heide had to parachute down. He had been suspicious about this outcome beforehand and had tried to talk authorities into dropping this part of the test, but to no avail. So he did the test starting at 10'000 ft.