20-147 - Turbojet, Turboprop, and Turbofan Engine Induction System Icing and Ice Ingestion
- Date Issued
- February 02, 2004
- Responsible Office
- This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, for demonstrating compliance with the applicable engine induction system icing and engine ice ingestion requirements. These requirements are applicable to the Federal Aviation Regulations, parts 23, 25, and 33 of Title 14 of the Code of Federal Regulations (14 CFR parts 23, 25, and 33). The primary purpose of this AC is to reduce inconsistencies and eventual surprises to both engine manufacturers and engine installers, when installing a part 33 certified engine in a part 23 or 25 aircraft.
- AC20-147.pdf (PDF, 128 KB)