1、Designation:F279914(Reapproved 2019)Standard Practice forMaintenance of Aircraft Electrical Wiring Systems1This standard is issued under the fixed designation F2799;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last rev
2、ision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 DefinitionThis practice defines acceptable practicesand processes for the maintenance,preventative maintenance,and repair of electr
3、ic systems in general aviation aircraft.Thispractice does not change or create any additional regulatoryrequirements nor does it authorize changes in or permitdeviations from existing regulatory requirements.1.2 ApplicabilityThe guidance provided in this practice isdirected to air carriers,air opera
4、tors,maintenance providers,repair stations,and anyone performing maintenance or repairs.1.3 Protections and WarningsThis practice provides guid-ance to minimize contamination and accidental damage toelectrical wiring interconnection systems(EWIS)while work-ing on aircraft.1.4“Protect and Clean As Yo
5、u Go”PhilosophyThisphilosophy is applied to aircraft wiring through inclusion inoperatorsmaintenance and training programs.This philosophystresses the importance of protective measures when workingon or around wire bundles and connectors.It stresses howimportant it is to protect EWIS during structur
6、al repairs,(STC)installations,or other alterations by ensuring that metalshavings,debris,and contamination resulting from such workare removed.1.5 UnitsThe values stated in inch-pound units are to beregarded as standard.The values given in parentheses aremathematical conversions to SI units that are
7、 provided forinformation only and are not considered standard.NOTE1When SI units are required,refer to Annex 5 of ICAO.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate
8、 safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment
9、of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2F2490 Guide for Aircraft Electrical Load and Power SourceCapacity AnalysisF2639 Practice for Design,Alteration,and Certific
10、ation ofAircraft Electrical Wiring Systems2.2 ICAO Standard:3ICAO Annex 5 Units of Measurement to Be Used in Air andGround Operations2.3 JEDEC Standard:4EIA 471 Symbol and Label for Electrostatic Sensitive De-vices2.4 NEMA Standard:5WC 27500 Standards for Aerospace and Industrial ElectricCable2.5 RT
11、CA Standard:6DO-160C Environmental Conditions and Test Proceduresfor Airborne Equipment2.6 SAE Standards:7AS4372 Performance Requirements for Wire,Electric,Insu-lated Copper or Copper AlloyAS4373 Test Methods for Insulated Electric WireAS21919 Clamp,Loop Type,Cushioned SupportAS22759 Wire,Electrical
12、,Fluoropolymer-Insulated,Copperor Copper AlloyAS50881 Wiring Aerospace Vehicle1This practice is under the jurisdiction of ASTM Committee F39 on AircraftSystems and is the direct responsibility of Subcommittee F39.02 on Inspection,Alteration,Maintenance,and Repair.Current edition approved June 1,2019
13、.Published June 2019.Originallyapproved in 2009.Last previous edition approved in 2014 as F279914.DOI:10.1520/F279914R19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to
14、the standards Document Summary page onthe ASTM website.3Available from International Civil Aviation Organization(ICAO),CustomerServices Unit,999 Robert-Bourassa Boulevard,Montral,Qubec,H3C 5H7,Canada,https:/www.icao.int.4Available from the JEDEC Solid State Technology Association,3103 N.10thSt.,Suit
15、e 240-S,Arlington,VA 22201-2107,https:/www.jedec.org/.5Available from National Electrical Manufacturers Association(NEMA),1300N.17th St.,Suite 900,Arlington,VA 22209,http:/www.nema.org.6Available from RTCA,Inc.,1150 18th NW,Suite 910,Washington,DC 20036,https:/www.rtca.org.7Available from Society of
16、 Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096,https:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Co