Federal Aviation Administration

Aircraft Certification Service (AIR)
Draft Advisory Circulars (ACs) Open for Comment

Document Title: AC 20-115C: Airborne Software Assurance
Summary: This AC describes an acceptable means, but not the only means, for showing compliance with the applicable airworthiness regulations for the software aspects only of airborne systems and equipment certification. This AC provides guidance to applicants, design approval holders, and developers of airborne systems and equipment containing software on the use of RTCA DO-178C, RTCA DO-330, RTCA DO-331, RTCA DO-332, and RTCA DO-333 standards.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Reference:
Comments Due: March 31, 2013
How to Comment: Email comments to:
richard.spencer@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Aircraft Engineering Division
Technical Programs Branch, AIR-120
950 L'Enfant Plaza, SW; 5th Floor
Washington, DC 20024

Document Title: Certification Data Retention Agreements and Government Records
Summary: This advisory circular (AC) describes the procedures that domestic design approval applicants and design approval holders (DAHs) should follow when entering into a certification data retention agreement with the Federal Aviation Administration (FAA). (See Title 14 of the Code of Federal Regulations (14 CFR) 21.21.) This AC also defines the type of certification data that constitute a government record.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Reference:
Comments Due: April 12, 2013
How to Comment: Email comments to:
maddie.miguel@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Certification Procedures Branch, AIR-111
950 L'Enfant Plaza North, S.W.
Washington, DC 20024��

Fax comments to:
202-385-6475
Document Title: AC 20-138D Airworthiness Approval of Positioning and Navigation Systems
Summary:

This revision adds minor clarifications and new guidance material based on issues and questions since revision 'C' was published. There are several new changes such as: equipment capability versus installed limitations; clarifying database configuration versus equipment capability; adding step-down fixes to navigation databases; a new appendix for demonstrating radius to fix (RF) turn capabiliy; and, including required navigation performance (RNP) prediction guidance for RNP authorization required approach (RNP AR APCH). Changes and new material are highlighted in yellow to aid the review process.

Commenters are requested to use the attached comment form to aid in processing comments.

Documents for Download: Draft Document (MS Word)
Draft Document Comment Grid (MS Word)
Reference:
Comments Due: May 15, 2013
How to Comment: Email comments to:
kevin.bridges@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
AIR-130
470 L'Enfant Plaza
Suite 4102
Washington, DC 20024
Attn: Kevin Bridges

Fax comments to:
202-385-4651
Document Title: Changes to AC 27-1B Sections
Summary: This is group 1 of the AC 27-1B proposed changes and new guidance material that provides established methods of compliance to part 27 airworthiness standards. This material was developed in conjunction with EASA in an effort to support harmonization between the FAA and EASA. A summary of the proposed changes is attached to provide a description of the revisions and new guidance material. Group 1 consists of the less extensive changes made to AC 27-1B while group 2, which will be completed and provided at a later date for coordination, will consist of the more extensive changes made to AC 27-1B.
Documents for Download: Summary of Changes (PDF)
Draft Document Comment Log (MS Word)
Document List for AC 27-1B Group 1 Changes
Reference: AC 27-1B to 14 CFR Part 27
Comments Due: June 3, 2013
How to Comment: Email comments to:
tyrone.d.millard@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Rotorcraft Directorate
Regulations and Policy Group, ASW-111
2601 Meacham Blvd.
Fort Worth, TX 76137-0111

Fax comments to:
817-222-5961
Document Title: Changes to AC 29-2C Sections
Summary: This is group 1 of the AC 29-2C proposed changes and new guidance material that provides established methods of compliance to part 29 airworthiness standards. This material was developed in conjunction with EASA in an effort to support harmonization between the FAA and EASA. A summary of the proposed changes is attached to provide a description of the revisions and new guidance material. Group 1 consists of the less extensive changes made to AC 29-2C while group 2, which will be completed and provided at a later date for coordination, will consist of the more extensive changes made to AC 29-2C.
Documents for Download: Summary of Changes (PDF)
Draft Document Comment Log (MS Word)
Document List for AC 29-2C Group 1 Changes
Reference: AC 29-2C to 14 CFR Part 29
Comments Due: June 3, 2013
How to Comment: Email comments to:
tyrone.d.millard@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Rotorcraft Directorate
Regulations and Policy Group, ASW-111
2601 Meacham Blvd.
Fort Worth, TX 76137-0111

Fax comments to:
817-222-5961
Document Title: Proposed AC 25.307-X, Proof of Structure
Summary: This proposed advisory circular describes acceptable means for showing compliance with the requirements of section 25.307 of Title 14, Code of Federal Regulations. That section contains requirements for substantiation of structure for strength and deformation up to limit and ultimate load levels. This proposed AC is related to Notice of Proposed Rulemaking, "Harmonization of Airworthiness Standards—Miscellaneous Structures Requirements," Docket No. FAA-2013-019.
Documents for Download: Draft Document (MS Word)
Reference:
Comments Due: June 13, 2013
How to Comment: Email comments to:
todd.martin@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Transport Airplane Directorate
Airframe and Cabin Safety Branch, ANM-115
1601 Lind Ave SW
Renton, WA 98057-3356

Fax comments to:
425-227-1232
Document Title: Proposed AC 25.621-X, Casting Factors
Summary: This proposed advisory circular describes acceptable means for showing compliance with the requirements of section 25.621 of Title 14, Code of Federal Regulations. Section 25.621 outlines the factors, tests, and inspections that must be applied to castings used in structural applications. This proposed AC is related to Notice of Proposed Rulemaking, "Harmonization of Airworthiness Standards—Miscellaneous Structures Requirements," Docket No. FAA-2013-019.
Documents for Download: Draft Document (MS Word)
Reference:
Comments Due: June 13, 2013
How to Comment: Email comments to:
todd.martin@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Transport Airplane Directorate
Airframe and Cabin Safety Branch, ANM-115
1601 Lind Ave SW
Renton, WA 98057-3356

Fax comments to:
425-227-1232
Document Title: Proposed AC 25-X, Fuel Tank Strength in Emergency Landing Conditions
Summary: This proposed advisory circular describes an acceptable means for showing compliance with the fuel tank structural integrity requirements of sections 25.561, 25.721, and 25.963 of Title 14, Code of Federal Regulations. Section 25.963(d) addresses fuel tank safety in emergency landing conditions. That section references sections 25.561 and 25.721, which also address emergency landing conditions. This proposed AC is related Notice of Proposed Rulemaking, "Harmonization of Airworthiness Standards—Miscellaneous Structures Requirements," Docket No. FAA-2013-019.
Documents for Download: Draft Document (MS Word)
Reference:
Comments Due: June 13, 2013
How to Comment: Email comments to:
todd.martin@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Transport Airplane Directorate
Airframe and Cabin Safety Branch, ANM-115
1601 Lind Ave SW
Renton, WA 98057-3356

Fax comments to:
425-227-1232
Document Title: Statistical Analysis Considerations for Comparative Test and Analysis Based Compliance Findings for Turbine Engine
Summary: This AC provides guidance and acceptable methods for applicants and FAA engineers for demonstrating compliance with �� 21.303 of Title 14 of the Code of Federal Regulations. The AC discusses the statistical principles of showing similarity and differences between sample populations in support of testing and analysis to compare proposed designs of turbine engine parts with the type design.
Documents for Download: Draft Document (MS Word)
Reference: 14 CFR Part 21
Comments Due: July 11, 2013
How to Comment: Email comments to:
marc.bouthillier@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Engine and Propeller Directorate
Standards Staff, ANE-111
12 New England Executive Park
Burlington, MA 01803

Fax comments to:
781-238-7199

Page Last Modified: 04/15/13 10:39 EDT

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