This advisory circular (AC) sets forth an acceptable means of showing compliance with Title 14 Code of Federal Regulations (14 CFR), part 23, for the certification of systems and equipment in normal, utility, acrobatic, and commuter category airplanes and airships. The policy in this AC is considered applicable for airship projects; however, the certifying office should only use specific applicability and requirements if they are determined to be reasonable, applicable and relevant to the airship project. This AC applies to Subpart D from § 23.671 and Subpart F. This AC both consolidates existing policy documents, and certain ACs that cover specific paragraphs of the regulations, into a single document and adds new guidance.

This document is intended to provide guidance for the original issue of part 23 and the various amendments through Amendment 23-62.  This version of the AC covers policy available through December 31, 2007, Policy that became available after December 31, 2007, will be consolidated in future revisions to the AC.

This advisory circular (AC) sets forth an acceptable means of showing compliance with Title 14 of the Code .of Federal Regulations (14 CFR), § 23.1309, through Amendment 23-6.2: for equipment, systems, and installations in 14 CFR part 23 airplanes.  This AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline a method of compliance with the rules. An applicant may elect to follow an alternate method, provided the FAA finds it to be an acceptable means of complying with the applicable requirements of 14 CFR. However, if the applicant uses the means described in the AC, they must follow it in all important respects.

This advisory circular (AC) provides guidance for showing compliance with certain requirements of Title 14, Code of Federal Regulations (CFR), part 23, as well as general guidance for the design, installation, integration, and approval of electronic flight deck displays, components, and systems installed in part 23 category airplanes. The guidance provided in this document is directed to airplane and avionics manufacturers, modifiers, and operators of part 23 category airplanes.  Applicants for a technical standard order (TSO) should consider following the guidance in this AC when the TSO requirements do not provide sufficient guidance. The main purpose of this revision of the AC is providing the guidance for the requirements in the turbojet rulemaking and some general updating due to lessons learned and advance and emerging technologies.

a. This advisory circular (AC) sets forth an acceptable means, but not the only means, of  showing compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 23 concerning flight tests and pilot judgements. Material in this AC is neither mandatory nor regulatory in nature and does not constitute a regulation.

b. This AC is one method being utilized to achieve national standardization in normal, utility, acrobatic, and commuter category airplanes. This AC applies to Subpart B and various sections under Subparts A, D, E, F and G from § 23.1 through § 23.1589. This AC consolidates existing policy documents, and certain ACs that cover specific paragraphs of the regulations, into a single document.

c. This material is intended as a ready reference for part 23 airplane manufacturers, modifiers, Federal Aviation Administration (FAA) design evaluation engineers, flight test engineers, and engineering flight test pilots, including Organization Delegation Option (DOA).

This advisory circular (AC) sets forth an acceptable means of showing compliance with Title 14 Code of Federal Regulations (14 CFR), part 23, for the certification of airplanes originally certificated to either European Aviation Safety Agency (EASA) CS-VLA or Joint Aviation Requirements (JAR) JAR-VLA.

This advisory circular (AC) provides guidance for substantiating parts or materials substitutions to maintain the safety of old or out-of-production general aviation (GA) aircraft, or other GA aircraft where the parts or materials are either difficult or impossible to obtain. This AC also provides guidance about the data required to gain Federal Aviation Administration (FAA) approval for making these substitutions. This AC does not include specific approvals for installations. It provides guidelines to follow when collecting information needed for an FAA approval. The material in this AC is neither mandatory nor regulatory in nature and does not constitute a regulation. You may follow an alternate FAA-approved method. However, if you use the means described in this AC, you must follow it in all respects. Mandatory words such as "must" apply only to those who seek to show compliance to a specific rule by use of a method prescribed in this AC without deviation.

This Advisory Circular (AC) sets forth an acceptable means, but not the only means, of demonstrating compliance with the ice protection requirements in Title 14 of the Code of Federal Regulations (14 CFR) part 23. The Federal Aviation Administration (FAA) will consider other methods of demonstrating compliance that an applicant may elect to present. This material is neither mandatory nor regulatory in nature and does not constitute a regulation.

This advisory circular (AC) sets forth an acceptable means of showing compliance with Title 14 Code of Federal Regulations (14 CFR) part 23 and Civil Air Regulations (CAR) 3 for the flammability testing of systems and equipment in normal, utility, acrobatic, and commuter category airplanes and airships. This AC applies to Subparts D and F of part 23 and applicable sections of CAR 3 as listed in Paragraph 6a. The revision addresses systems and equipment and references other general ACs that provide guidance for other subparts of part 23.

This change revises existing material in four paragraphs. First, it adds a reference to FAA Order 8300.10. Second, it indicates that no further FAA approval is required when 100 percent of the data is DER approved. Third, it includes a reference to the FSDO/ASI for signature on FAA Form 337. Fourth, it includes a requirement to submit ICA’s to the FSDO/ASI for acceptance. The change number and the date of the changed material are shown at the top of each changed page. Vertical bars in the margin indicate the changed material. Pages having no changes retain the same heading information.

CHANGE 1 (03-16-2005)

This advisory circular (AC) provides information and guidance about acceptable means, but not the only means of compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 23, subpart E, applicable to the powerplant installation in normal, utility, acrobatic, and commuter category airplanes.

This AC consolidates existing policy documents, and certain AC’s that cover specific paragraphs of the regulations, into a single document. Material in this AC is neither mandatory nor regulatory in nature and does not constitute a regulation. The guidance in this AC has been reviewed for suitability as an acceptable means, but not the only means, of compliance with the Airship Design Criteria (ADC), document FAA-P-8110-2.

This document notes when guidance is considered applicable to the ADC requirements and cross-references the applicable ADC paragraph with the 14 CFR part 23, subpart E paragraph. Applicability of this guidance to airship projects that do not use the ADC, or that are not noted as applicable, must be determined by the certifying office. Wherever there is no written policy or guidance material applicable to a specific paragraph, the phrase, “No specific policy is available as of December 31, 2002,” is used. AC’s and policy memos approved after this date may be included as reference material only.