SAE AS 5498A:2017-12-05

This document is being revised to address new airworthiness authority rulemaking and guidance since the original issue of the document and to provide more comprehensive coverage of the subject, with a focus on the following areas:
• Requirements for CS-25/14 CFR Part 25, Appendix (App.) O and CS-25, App. P/14 CFR Part 33, App. D, associated regulatory changes, and means of compliance,
• New FIDS FUNCTIONS in relation with App. O and /or App. D/P conditions,
• Rationale between the FIDS response time requirements and the time requirement to annunciate presence of ice accumulation or icing conditions to ensure safe Aircraft operations,
• Comprehensive test conditions to verify the compliance of the FIDS FUNCTIONS with functional requirements,
• Guidance to analyze local FIDS conditions Vs Aircraft critical surfaces conditions e.g., critical temperature, freezing fraction, local installation factors, etc.
• Process/Guidance to verify FIDS performance when Installed on A/C
• Considerations for revised certification and qualification requirements,
• Specific considerations for the installation of FIDS on ROTORCRAFT.