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Minimum Operational Performance Specification for Inflight Icing Detection Systems
- Aerospace Standard
- AS5498A
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Rationale
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:
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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,
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New FIDS FUNCTIONS in relation with App. O and/or App. D/P conditions,
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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,
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Comprehensive test conditions to verify the compliance of the FIDS FUNCTIONS with functional requirements,
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Guidance to analyze local FIDS conditions Vs Aircraft critical surfaces conditions e.g., critical temperature, freezing fraction, local installation factors, etc.
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Process/Guidance to verify FIDS performance when Installed on A/C
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Considerations for revised certification and qualification requirements,
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Specific considerations for the installation of FIDS on ROTORCRAFT.
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Data Sets - Support Documents
| Title | Description | Download |
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| Table 1 | AIRCRAFT and ROTORCRAFT test matrices for liquid water (LW) conditions: LW-C conditions | |
| Table 1 | AIRCRAFT and ROTORCRAFT test matrices for liquid water (LW) conditions: LW-C conditions | |
| Table 2 | AIRCRAFT and ROTORCRAFT test matrices for MIXED PHASE or GLACIATED CONDITIONS: GL, MP CONDITIONS | |
| Table 2 | AIRCRAFT and ROTORCRAFT test matrices for MIXED PHASE or GLACIATED CONDITIONS: GL, MP CONDITIONS | |
| Table 3 | LWC requirements for LW FIDS functions | |
| Table 4 | LWC requirements for App. O FIDS functions | |
| Table 5 | GL and MP discrimination time requirements | |
| Table 6 | List of ED-14/DO-160 test conditions and requirements | |
| Table 7 | LW and MP test requirements | |
| Table 8 | App. O test requirements | |
| Table 9 | ICE CRYSTALS and MIXED PHASE test requirements | |
| Table A1 | Terms used in to | |
| Unnamed Dataset 24 | ||
| Table A2 | Freezing fraction and collection efficiency values of & (aircraft) | |
| Table A2 | Freezing fraction and collection efficiency values of & (aircraft) | |
| Table A3 | Freezing fraction and collection efficiency values for & (rotorcraft) | |
| Table A3 | Freezing fraction and collection efficiency values for & (rotorcraft) | |
| Table A5 | Response time table proposed by the ICC |
Issuing Committee
AC-9C Aircraft Icing Technology Committee
Furthers the advancement of technology related to the research, design, test and utilization of aircraft environmental and anti-icing/deicing systems. Develops and updates standards, recommended practices, and information reports contributing to the quality, economy, and safety of commercial and military aircraft.
A list of the technical reports developed by the AC-9C Sub- Committee can be obtained by searching on 'aircraft icing' and selecting 'standards', from the SAE Home Page. AC-9C StandardsReference
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