EC225 crash near Bergen, Norway April 2016

[JohnDixson]

Post 1335

Thanks, Riff Raff,

I did look at my 1999 copy of AC 29-2C ( just assuming that something similar applied to the EC225 design/qual effort ), which provides the test/qualification methods the FAA expects to see that support compliance with the basic FAR Pt 29. In this case 29.923, and those procedures look like they pertain to the tie down aircraft endurance runs etc, so the underlying requirement would remain as One-P described, a design to 140% of max load. There is a statement I found offering an alternative test to 10-7th cycles with an appropriate power spectrum. Does that square with where you were going?