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DOT/FAA RIN: 2120-AF75 Publication ID: Fall 1995 
Title: ●Water and Hail Ingestion Standards 
Abstract: This action proposes changes to the water and hail ingestion standards for aircraft turbine engines. This proposal addresses an engine power-loss instability phenomena attributed to operation in extreme rain or hail that is not adequately addressed by current requirements. This proposal also harmonizes with requirements being drafted by the Joint Aviation Authorities (JAA). The proposed changes, if adopted, will establish one set of common requirements, thereby reducing the hardship on the United States and worldwide aviation industry, by eliminating the need for manufacturers to comply with different sets of standards when seeking validation from the FAA and JAA. 
Agency: Department of Transportation(DOT)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Proposed Rule Stage 
EO 13771 Designation: uncollected 
CFR Citation: 14 CFR 33   
Legal Authority: 49 USC 1344    49 USC 1354(a)    49 USC 1355    49 USC 1421    49 USC 1423 to 1426    49 USC 106(g)   
Timetable:
Action Date FR Cite
NPRM  11/00/1995    
Additional Information: Project Number: ANE-93-734A. This is an Aviation Rulemaking Advisory Committee project. ^PANALYSIS: Regulatory Evaluation, 11/00/95
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Included in the Regulatory Plan: No 
Agency Contact:
Thomas Boudreau
Aircraft Certification Service
Department of Transportation
Federal Aviation Administration
12 New England Executive Park,
Burlington, MA 01803-5299
Phone:617 238-7117