Document Title: AC 21-XX, Experimental Airworthiness Certification of Certain Former Military Aircraft
Summary: This advisory circular (AC) provides information and guidance concerning special airworthiness certification in the experimental category of certain former military aircraft under Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts, § 21.191.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Reference: 14 CFR 21.191
Comments Due: March 30, 2014
How to Comment: Email comments to:
richard.posey@faa.gov

Deliver comments by mail or hand to:
FAA, AIR-200
950 L'Enfant Plaza, SW
5th Floor - Suite#500
Washington, DC 20024

Fax comments to:
202-385-6346
Document Title: The Certification of Aircraft Electrical & Electronic Systems for Operation in High-Intensity Radiated Field (HIRF) Environment, AC 20-158A
Summary: This advisory circular (AC) will provide you with information and guidance on how to show compliance with Title 14, Code of Federal Regulations (14 CFR) 23.1308, 25.1317, 27.1317, and 29.1317, High-intensity Radiated Fields (HIRF) Protection.
Documents for Download: Draft Document (MS Word)
Draft Document Comment Grid (MS Word)
Reference:
Comments Due: April 18, 2014
How to Comment: Email comments to:
lee.nguyen@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Design, Manufacturing & Airworthiness Division
Aircraft Ceritification Service
470 L'Enfant Plaza, SW, Suite 4102
Washington, DC 20024

Fax comments to:
202-385-4651
Document Title: Airworthiness Approval for Aircraft Weather Radar Systems
Summary: This advisory circular (AC) provides guidance for the initial and follow-on airworthiness approval of aircraft weather radar systems meeting the latest revision of the Technical Standard Order (TSO) C63, Airborne Weather Radar Equipment. This AC covers aircraft weather and ground mapping pulsed radar systems, and airborne Doppler weather radar systems with forward-looking windshear and/or turbulence detection capability. The guidance is applicable to Title 14 of the Code of Federal Regulations, parts 23, 25, 27, and 29 aircraft. This AC does not address forward-looking windshear and/or turbulence detection capability for rotorcraft.
Documents for Download: Draft Document (PDF)
Draft Document Comment Grid (MS Word)
Reference:
Comments Due: April 28, 2014
How to Comment: Email comments to:
lee.nguyen@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Design, Manufacturing and Airworthiness Division
Systems and Equipment Standards Branch, AIR-130
470 L'Enfant Plaza, SW, Suite 4102
Washington, DC 20024

Fax comments to:
202-267-8589
Document Title: AC 20-613, Material Strength Properties and Material Design Values
Summary: This notice announces the availability of and request for public comments on the proposed new Federal Aviation Administration (FAA) Advisory Circular (AC) 20-613, Certification Guidance for Material Strength Properties and Material Design Values. This proposed AC provides guidance for showing compliance with the regulatory requirements for the development of material strength and design values, as well as use of material allowables specified in FAA supported handbooks.
Documents for Download: Draft Document (MS Word)
Draft Document Comment Grid (MS Word)
Reference: 14 CFR 23.613, 25.613, 27.613 and 29.613
Comments Due: April 25, 2014
How to Comment:

Email comments to:
Jim.Kabbara@faa.gov

Deliver comments by mail or hand to:
Federal Aviation Administration
Aircraft Certification Service
Design, Manufacturing & Airworthiness Division, AIR-100
950 L'Enfant Plaza, 5th Floor
Washington, DC 20024
ATTN: Jim Kabbara, AIR-133

Document Title: Oxidation, Hot Corrosion, Thermal Fatigue, and Erosion Characteristics Testing to Support 14 CFR, Part 33, 33.15, Compliance for Turbine Engines
Summary: This AC is necessary to show certain functional and durability equivalencies between engine combustor and turbine section parts from different design or manufacturing processes, e.g., parts manufacturer approvals (PMA) versus type design parts. These equivalencies relate to oxidation, hot corrosion, and thermal fatigue and erosion characteristics in the engine environment. This data is necessary to support overall FAA design approval of turbine engine and auxiliary power unit (APU) parts approved under PMA, type certificate (TC) design change, supplemental type certificate (STC), or repair or alteration authority.
Documents for Download: Draft Document (MS Word)
Draft Document Comment Grid (MS Word)
Reference: 14 CFR Part 33.15
Comments Due: May 16, 2014
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