Certification and integration aspects of a primary ice detection system

Abstract

Recent events transpiring after the crash of a Canadair Regional Jet in Fredericton, New Brunswick, Canada brought into question the ability to certify a primary ice detection system. As the leading supplier of primary ice detection systems, BFGoodrich Aircraft Sensors Division (ASD) has focused much energy to dispel the myths revolving around the certification of these systems. The work presented here addresses a variety of issues ranging from differences in ice detector designs, types of ice detection systems, Ludlam limit issues, ice detector location, system integration and certification issues. From our involvement with the icing community at large and the various aircraft manufacturers, aircraft operators, and pilots, it is apparent more education is needed on how an ice detection system works. This paper addresses these issues with a focus on how each of these pieces fits into the certification of a primary ice detection system. Our experience has shown that many people are insufficiently informed about one or more of these pieces. Understanding the information provided in this paper should provide the groundwork for the certification of a primary ice detection system and its reliable use in service. Some of the benefits of completing the required steps to certify a primary ice detection system are reduced pilot workload, increased fuel savings, and increased safety.