The FAA published a Notice of Issuance of Advisory Circular in today’s federal register for Advisory Circular 25.1419-1A, Certification of Transport Category Airplanes for Flight in Icing Conditions. This AC provides guidance for certification of airframe ice protection systems on transport category aircraft in accordance with FAR 25.1419 and is an updated version of a previously issued AC on the same subject.
Specifically, this AC contains a revised description of information that should be included in a certification plan submitted by an applicant. Also, under the previous AC applicants were apparently under the impression that actual flight test demonstrations were not required if the applicant submitted “adequate analysis and testing”. However, the revised AC makes it clear that flight test demonstrations are required to “to check for icing anomalies, and to demonstrate that the ice protection system and its components are effective” and to comply with FAR 25.1419.
If you would like more information, you can contact Pat Siegrist, FAA Standardization Branch, ANM-113, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (425) 227-2126.