If you are dealing with certification issues, NLR supports you with the following capabilities.
Capabilities
Aircraft Flutter Testing and Certification
Alternative Energy and Fuels
Avionics Development and Qualification
Certification Support
Electronic Warfare Aircraft Self Protection
Flight Physics
Flight Test Support
Live Virtual Constructive
Modelling and Simulation
Rotorcraft Airworthiness
Rotorcraft RPAS
Rotorcraft Technology
Ship-Helicopter Operational Limitations
Simulation Solutions for Aircraft Systems
Unmanned Rotorcraft Systems
Wind Tunnel Models