ASTM_F_2799_-_14.pdf

Designation:F279914Standard 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 revision.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 electric 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 operators,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 You 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 structural repairs,(STC)installations,or other alterations by ensuring that metalshavings,debris,and contamination resulting from such workare removed.1.5 UnitsThe values given in inch-pound units are to beregarded as the standard.The values given in parentheses aremathematical conversions to SI units that are 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 safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2F2490 Guide for Aircraft Electrical Load and Power SourceCapacity AnalysisF2639 Practice for Design,Alteration,and Certification ofAirplane Electrical Wiring Systems2.2 ICAO Standard:ICAO Annex 5 Units of Measurement to Be Used in Air andGround Operations32.3 JEDEC Standard:EIA 471 Symbol and Label for Electrostatic Sensitive De-vices42.4 NEMA Standard:WC 27500 Standards for Aerospace and Industrial ElectricCable52.5 RTCA Standard:DO-160C Environmental Conditions and Test Proceduresfor Airborne Equipment62.6 SAE Standards:AS 4372 Performance Requirements for Wire,Electric,In-sulated Copper or Copper Alloy7AS 4373 Test Methods for Insulated Electric Wire7AS 21919 Clamp,Loop Type,Cushioned Support7AS 50881 Wiring Aerospace Vehicle7ARP 1870 Aerospace Systems Electrical Bonding andGrounding for Electromagnetic Compatibility and Safety7ARP 1928 Torque Recommendations for Attaching Electri-cal Wiring Devices to Terminal Boards or Blocks,Studs,Posts,Etc.72.7 Federal Standards:Advisory Circular 20-53A Protection of Aircraft Fuel Sys-tems against Fuel Vapor Ignition due to Lightning1This practice is under the jurisdiction of ASTM Committee F39 on AircraftSystems and is the direct responsibility of Subcommittee F39.02 on Inspection,Maintenance,and Repair.Current edition approved May 1,2014.Published June 2014.Originallyapproved in 2009.Last previous edition approved in 2009 as F2799 09.DOI:10.1520/F2799-14.2For 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 the standards Document Summary page onthe ASTM website.3Available from ICAO,Customer Services Unit,999 University St.,Montreal,Quebec,H3C 5H7,Canada.4Available from the JEDEC Solid State Technology Association,3103 N.10thSt.,Suite 240-S,Arlington,VA 22201.5Available from National Electrical Manufacturers Association(NEMA),1300N.17th St.,Suite 1752,Rosslyn,VA 22209,http:/www.nema.org.6Available from RTCA,Inc.,1828 LSt.,NW,Suite 805,Washington,DC 20036.7Available from Society of Automotive Engineers(SAE),400 CommonwealthDr.,Warrendale,PA 15096-0001,http:/www.sae.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 MIL-C-22520/2C Crimping Tools,Terminal,Hand,WireTerminationMIL-S-8802 Sealing Compound,Temperature-Resistant,In-tegral Fuel Tanks and Fuel Cell Cavities,High AdhesionMIL-T-7928Terminal,Lug Splices,Conductors,CrimpStyle,CopperMIL-T-43435 Tape,Lacing and TyingMS17821 Specification for Cable and Marker Color CodeNumbersMS17822 Specification for Cable and Marker Color CodeNumbersNAVAIR 01-1A-505 Installation PracticesAircraft Elec-tric and Electronic Wiring3.Terminology3.1 Definitions:3.1.1