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AC 25-28 - Compliance of Transport Category Airplanes with Certification Requirements for Flight in Icing Conditions

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25-28 - Compliance of Transport Category Airplanes with Certification Requirements for Flight in Icing Conditions

Date Issued
October 27, 2014
Responsible Office
ANM-110
Description

This advisory circular (AC) describes an acceptable means of showing compliance with the supercooled large drop condition requirements of § 25.773, Pilot compartment view, § 25.1323, Airspeed indicating system, § 25.1324 Angle of attack system and § 25.1325, Static pressure system, as well as the requirements of § 25.1419, Ice protection, and § 25.1420, Supercooled large drop icing conditions, of Title 14, Code of Federal Regulations (14 CFR) part 25.  Part 25 contains the certification requirements for transport category airplanes.  The compliance means described in this document are intended as guidance.  They are meant to supplement the engineering judgment that must form the basis of any compliance findings for the supercooled large drop icing conditions in §§ 25.773, 25.1323, 25.1324, and 25.1325, as well as the compliance findings for §§ 25.1419 and 25.1420.

This page was originally published at: https://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.information/documentID/1019691