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DOT/FAA

RIN: 2120-AK13

Publication ID: Spring 2014

Title: Harmonization of Airworthiness Standards--Miscellaneous Structures Requirements
Abstract: This rulemaking would harmonize regulatory differences between the airworthiness standards of the FAA and European Aviation Safety Agency (EASA) by revising the structural test requirements necessary when analysis has not been found reliable; clarifying the quality control, inspection, and testing requirements for critical and non-critical castings; adding control system requirements that consider structural deflection and vibration loads; expanding the fuel tank structural and system requirements regarding emergency landing conditions and landing gear failure conditions; adding a requirement that engine mount failure due to overload must not cause hazardous fuel spillage; and revising the inertial forces requirements for cargo compartments by removing the exclusion of compartments located below or forward of all occupants in the airplane. This action is based on recommendations from the Aviation Rulemaking Advisory Committee (ARAC). The intended effect is for future certificated transport airplanes to meet one single set of requirements.
Agency: Department of Transportation(DOT)	Priority: Substantive, Nonsignificant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Final Rule Stage
Major: No	Unfunded Mandates: No
CFR Citation: 14 CFR 25
Legal Authority: 14 USC 106(g) 14 USC 40113 49 USC 44701 49 USC 44702 49 USC 44704

Legal Deadline: None

Timetable:

Action	Date	FR Cite
NPRM	03/01/2013	78 FR 13835
NPRM Comment Period End	05/30/2013
Final Action	07/00/2014

Additional Information: No costs are associated with this proposed rule because all manufacturers of transport category airplanes, certified under part 25, are expected to continue their current practice of compliance under both part 25 and EASA's CS-25. Since this rule simply adopts the same requirements as CS-25, the FAA estimates that manufacturers would not incur additional costs resulting from this rule. They may, in fact, receive cost-savings because they will not have to build and certificate transport category airplanes to two different authorities' certification specifications, paperwork requirements, and rules.
Regulatory Flexibility Analysis Required: No	Government Levels Affected: Federal
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: Todd Martin Aircraft Certification Service Department of Transportation Federal Aviation Administration 2200 S 216th Street, Des Moines, WA 98198 Phone:206 231-3210 Email: todd.martin@faa.gov