ASTM F3231/F3231M-21

Standard Specification for Electrical Systems for Aircraft with Combustion Engine Electrical Power Generation

SCOPE
1.1 This specification covers electrical systems, electrical equipment, and electrical power distribution aspects of airworthiness and design for aeroplanes with combustion engine generation of electrical power. The material was developed through open consensus of international experts in general aviation. This information was created by focusing on Normal Category Aeroplanes. The content may be more broadly applicable; it is the responsibility of the applicant to substantiate broader applicability as a specific means of compliance.  
1.2 An applicant intending to propose this information as Means of Compliance for a design approval shall seek guidance from their respective oversight authority (for example, published guidance from applicable civil aviation authorities (CAAs)) concerning the acceptable use and application thereof. For information on which oversight authorities have accepted this specification (in whole or in part) as an acceptable Means of Compliance to their regulatory requirements (hereinafter “the Rules”), refer to ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm).  
1.3 Units—This standard may present information in either SI units, English Engineering units, or both; the values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-Dec-2020
• ICS: 49.020 - Aircraft and space vehicles in general
• Technical Committee: F44 - General Aviation Aircraft
• Drafting Committee: F44.50 - Systems and Equipment

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: F3231/F3231M −21
Standard Specification for
Electrical Systems for Aircraft with Combustion Engine
1
Electrical Power Generation
ThisstandardisissuedunderthefixeddesignationF3231/F3231M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers electrical systems, electrical
equipment, and electrical power distribution aspects of airwor-
2. Referenced Documents
thiness and design for aeroplanes with combustion engine
2.1 Following is a list of external standards referenced
generation of electrical power. The material was developed
throughout this specification; the earliest revision acceptable
through open consensus of international experts in general
for use is indicated. In all cases later document revisions are
aviation. This information was created by focusing on Normal
acceptableifshowntobeequivalenttothelistedrevision,orif
Category Aeroplanes. The content may be more broadly
otherwise formally accepted by the governing CAA; earlier
applicable; it is the responsibility of the applicant to substan-
revisions are not acceptable.
tiate broader applicability as a specific means of compliance.
2
2.2 ASTM Standards:
1.2 An applicant intending to propose this information as
F2490Guide forAircraft Electrical Load and Power Source
Means of Compliance for a design approval shall seek guid-
Capacity Analysis
ance from their respective oversight authority (for example,
F2639Practice for Design, Alteration, and Certification of
published guidance from applicable civil aviation authorities
Aircraft Electrical Wiring Systems
(CAAs)) concerning the acceptable use and application
F3060Terminology for Aircraft
thereof. For information on which oversight authorities have
F3061/F3061MSpecification for Systems and Equipment in
accepted this specification (in whole or in part) as an accept-
Small Aircraft
able Means of Compliance to their regulatory requirements
F3066/F3066MSpecification forAircraft Powerplant Instal-
(hereinafter “the Rules”), refer to ASTM Committee F44 web
lation Hazard Mitigation
page (www.astm.org/COMMITTEE/F44.htm).
F3117/F3117MSpecification for Crew Interface in Aircraft
1.3 Units—This standard may present information in either
F3235Specification for Aircraft Storage Batteries
SI units, English Engineering units, or both; the values stated
F3316/F3316MSpecification for Electrical Systems forAir-
in each system are not necessarily exact equivalents; therefore,
craft with Electric or Hybrid-Electric Propulsion
to ensure conformance with the standard, each system shall be
3
2.3 FAA Standard:
used independently of the other, and values from the two
DOT/FAA/AR-00/12Aircraft Materials Fire Test Handbook
systems shall not be combined.
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
3.1 Terminology specific to this specification is provided
responsibility of the user of this standard to establish appro-
below. For general terminology, refer to Terminology F3060.
priate safety, health, and environmental practices and deter-
3.2 Definitions of Terms Specific to This Standard:
mine the applicability of regulatory limitations prior to use.
3.2.1 aircraft type code, n—anAircraftType Code (ATC) is
1.5 This international standard was developed in accor-
defined by considering both the technical considerations re-
dance with internationally recognized principles on standard-
garding the design of the aircraft and the airworthiness level
ization established in the Decision on Principles for the
established based upon risk-based criteria; the method of
Development of International Standards, Guides and Recom-
1 2
ThisspecificationisunderthejurisdictionofASTMCommitteeF44onGeneral For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Aviation Aircraft and is the direct responsibility of Subcommittee F44.50 on contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Systems and Equipment. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Jan. 1, 2021. Published January 2021. Originally the ASTM website.
3
approved in 2017. Last previous edition approved in 2020 as F3231/F3231M–20. Available from Federal Aviation Administration (FAA), 800 Independence
DOI: 10.1520/F3231_F3231M-21. Ave., SW, Washington, DC 20591, http://www.faa.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Uni
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F3231/F3231M − 20 F3231/F3231M − 21
Standard Specification for
Electrical Systems for Aircraft with Combustion Engine
1
Electrical Power Generation
This standard is issued under the fixed designation F3231/F3231M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers electrical systems, electrical equipment, and electrical power distribution aspects of airworthiness
and design for aeroplanes with combustion engine generation of electrical power. The material was developed through open
consensus of international experts in general aviation. This information was created by focusing on Normal Category Aeroplanes.
The content may be more broadly applicable; it is the responsibility of the applicant to substantiate broader applicability as a
specific means of compliance.
1.2 An applicant intending to propose this information as Means of Compliance for a design approval mustshall seek guidance
from their respective oversight authority (for example, published guidance from applicable civil aviation authorities (CAAs))
concerning the acceptable use and application thereof. For information on which oversight authorities have accepted this
specification (in whole or in part) as an acceptable Means of Compliance to their regulatory requirements (hereinafter “the Rules”),
refer to ASTM Committee F44 web page (www.astm.org/COMMITTEE/F44.htm).
1.3 Units—This standard may present information in either SI units, English Engineering units, or both; the values stated in each
system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other, and values from the two systems shall not be combined.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 Following is a list of external standards referenced throughout this specification; the earliest revision acceptable for use is
indicated. In all cases later document revisions are acceptable if shown to be equivalent to the listed revision, or if otherwise
formally accepted by the governing CAA; earlier revisions are not acceptable.
2
2.2 ASTM Standards:
1
This specification is under the jurisdiction of ASTM Committee F44 on General Aviation Aircraft and is the direct responsibility of Subcommittee F44.50 on Systems
and Equipment.
Current edition approved Nov. 1, 2020Jan. 1, 2021. Published January 2021. Originally approved in 2017. Last previous edition approved in 20192020 as
F3231/F3231M–19.–20. DOI: 10.1520/F3231_F3231M-20.10.1520/F3231_F3231M-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F3231/F3231M − 21
F2490 Guide for Aircraft Electrical Load and Power Source Capacity Analysis
F2639 Practice for Design, Alteration, and Certification of Aircraft Electrical Wiring Systems
F3060 Terminology for Aircraft
F3061/F3061M Specification for Systems and Equipment in Small Aircraft
F3066/F3066M Specification for Aircraft Powerplant Installation Hazard Mitigation
F3117/F3117M Specification for Crew Interface in Aircraft
F3235 Specification for Aircraft Storage Batteries
F3316/F3316M Specification for Electrical Systems for Aircraft with Electric or Hybrid-Electric Propulsion
3
2.3 FAA Standard:
DOT/FAA/AR-00/12 Aircraft Materials Fire Test Handbook
3. Terminology
3.1 Terminology specific to this specification is provided below.
...