Originally Posted by
JohnDixson
So, how does this get done? Or, does it need to be done?
From my understanding it depends on the integration of the FBW. For the Bell 525 FBW the FAA issued Special Conditions to its certification basis under Part 29. See below. I also believe for the AW609, its flight control certifications will be dealt with under the new Powered-Lift category's certification requirements which has been described as a collection of existing Part 23, 25, and 29 requirements. However, my info is a bit dated on the 609.
Special Conditions: Bell Textron Inc. Model 525 Helicopter; Fly-By-Wire Flight Control System