FAA Publishes Modified Noise Rules For Tiltrotors

FAA Publishes Modified Noise Rules For Tiltrotors: Brings U.S. Regulations Into Agreement With ICAO Standards The FAA has published a rule in the Federal Register governing noise certification standards for issuing type and airworthiness certificates for a new civil, hybrid airplane-rotorcraft known as the tiltrotor. This noise standard establishes new noise limits and procedures as the basis to ensure consistent aviation noise reduction technology is incorporated in tiltrotors for environmental protection.