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DOT/FAA

RIN: 2120-AJ34

Publication ID: Fall 2010

Title: Supercooled Large Droplet Icing Conditions
Abstract: This rulemaking would amend the airworthiness standards applicable to transport category airplanes certificated for flight in icing conditions and the icing airworthiness standards applicable to aircraft engines. The rulemaking would improve safety by taking into account supercooled large drop icing conditions for transport category airplanes most affected by supercooled large drop icing conditions. The rulemaking would also include mixed phase and ice crystal conditions for all transport category airplanes, and supercooled large drop, mixed phase, and ice crystal icing conditions for all turbine engines. This rulemaking is the result of information gathered from a review of icing accidents and incidents, and is intended to improve the level of safety for new airplane and engine designs for operations in icing conditions.
Agency: Department of Transportation(DOT)	Priority: Other Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Proposed Rule Stage
Major: No	Unfunded Mandates: No
CFR Citation: 14 CFR 23 14 CFR 25
Legal Authority: 49 USC 44702 49 USC 106(g) 49 USC 40113 49 USC 44701 49 USC 44704

Legal Deadline: None

Timetable:

Action	Date	FR Cite
NPRM	06/29/2010	75 FR 37311
NPRM Comment Period Extended	08/16/2010
Second NPRM Comment Period End	09/29/2010
NPRM Comment Period End	09/30/2010
Analyzing Comments	01/00/0011

Regulatory Flexibility Analysis Required: No	Government Levels Affected: None
Small Entities Affected: No	Federalism: No
Included in the Regulatory Plan: No
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL: www.regulations.gov	Public Comment URL: www.regulations.gov
RIN Data Printed in the FR: No
Agency Contact: Kathi Ishimaru ANM-112 Department of Transportation Federal Aviation Administration 1601 Lind Avenue SW, Renton, WA 98057-3356 Phone:425-227-2674 Fax:425-227-1320 Email: kathi.ishimaru@faa.gov