1、Designation: F2639 071F2639 15Standard Practice forDesign, Alteration, and Certification of AirplaneAircraftElectrical Wiring Systems1This standard is issued under the fixed designation F2639; the number immediately following the designation indicates the year oforiginal adoption or, in the case of
2、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 NOTEAdded 1.5 editorially in September 2012.1. Scope1.1 DefinitionThis practice defines acceptable practic
3、es and processes for the design, alteration, and certification of electricsystems and installations in general aviation aircraft.This practice does not change or create any additional regulatory requirementsnor does it authorize changes in or permit deviations from existing regulatory requirements.1
4、.2 ApplicabilityThe guidance provided in this practice is directed to air carriers, air operators, design approval holders,Supplemental Type Certificate (STC) holders, maintenance providers, repair stations, and anyone performing field approvalmodifications or repairs.1.3 Protections and CautionsThi
5、s practice provides guidance for developing actions and cautionary statements to be addedto maintenance instructions for the protection of wire and wire configurations. Maintenance personnel will use these enhancedprocedures to minimize contamination and accidental damage to electrical wiring interc
6、onnection system (EWIS) while workingon aircraft.1.4 “Protect and Clean As You Go” PhilosophyThis philosophy is applied to aircraft wiring through inclusion in operatorsmaintenance and training programs. This philosophy stresses the importance of protective measures when working on or aroundwire bun
7、dles and connectors. It stresses how important it is to protect EWIS during structural repairs, STC installations, or otheralterations by making sure that metal shavings, debris, and contamination resulting from such work are removed.1.5 This practice includes the following sections:Title SectionWir
8、e Selection 5General 5.1Aircraft Wire Materials 5.2Table of Acceptable Wires 5.3Severe Wind and Moisture Problems (SWAMP) 5.4Grounding and Bonding 5.5Electrical Wire Chart 5.6Wire and Cable Identification 6General 6.1Wire and Cable Identification 6.2Types of Markings 6.3Sleeve and Cable Marker Selec
9、tion 6.4Placement of Identification Markings 6.5Wiring Installation 7General 7.1Wire Harness Installation 7.2Power Feeders 7.3Service Loops 7.4Drip Loops 7.5Soldering 7.6Strain Relief 7.7Grounding and Bonding 7.8Splicing 7.9Fuel Tank Wiring 7.101 This practice is under the jurisdiction of ASTM Commi
10、ttee F39 on Aircraft Systems and is the direct responsibility of Subcommittee F39.01 on Design, Alteration, andCertification of Electrical Systems.Current edition approved Sept. 1, 2007Aug. 1, 2015. Published October 2007September 2015. Originally approved in 2007. Last previous edition approved in
11、2007 asF2639 071. DOI: 10.1520/F2639-07E01.10.1520/F2639-15.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. Becauseit may not be technically possible to adequately depict all chan
12、ges accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Un
13、ited States1Corrosion Preventative Compounds (CPC)(MIL-C-81309)7.11Electrical Load Considerations 8General 8.1Methods for Determining the Current-CarryingCapacity of Wires8.2Acceptable Means of Monitoring andControlling the Electrical Load8.3Electrical System Components 9General 9.1Alternators 9.2Ge
14、nerators 9.3Ground Power Units 9.4Auxiliary Power Units 9.5Batteries 9.6Circuit Protection Devices 9.7Conduit 9.8Connectors 9.9Inverters and Power Converters 9.10Junctions 9.11Junction Boxes 9.12Electronic Assemblies 9.13Relays 9.14Studs 9.15Switches 9.16Terminals and Terminal Blocks 9.17Waveguides
15、9.18Electrical System Component Installation 10General 10.1Alternators 10.2Generators 10.3Auxiliary Power Units (APUs) 10.4Batteries 10.5Circuit Protection Devices 10.6Conduit 10.7Connectors 10.8Inverters and Power Converters 10.9Junctions 10.10Junction Boxes, Panels, Shields, andMicroswitch Housing
16、s10.11PC Board Assemblies 10.12Relays 10.13Studs 10.14Switches 10.15Terminals and Terminal Blocks 10.16Waveguides 10.17EMI/RFI 11General 11.1Grounding and Bonding 11.2HIRF 11.3Lightning 11.4Alterations 12General 12.1Wire Substitutions 12.2Commercial Off-the-Shelf (COTS) Components 12.3Electrical Loa
17、d Considerations 12.4Batteries 12.5Circuit Breakers 12.6Junction Boxes 12.7Relays 12.8Switches 12.9Wire Marking 12.10Wire Bundle Routing 12.11Wire Bundle Combing 12.12Interference Tests 12.13System Safety Assessments 12.14Certification Processes 13General 13.1Certification 13.2Alterations and Mainte
18、nance 13.31.6 ValuesThe values given in inch-pound units are to be regarded as the standard. The values in parentheses are forinformation only. See Appendix X2 for SI-based prefixes and powers of 10.NOTE 1Where SI units are required, refer to Annex 5 of ICAO.1.7 This standard does not purport to add
19、ress all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatorylimitations prior to use.F2639 1522. Referenced Documents2.1 Unless approved by the
20、 administrator, the latest revision of the listed documents shall be used for reference.2.2 ASTM Standards:2F2490 Guide for Aircraft Electrical Load and Power Source Capacity Analysis2.3 ANSI Standards:3ANSI/EIA-5200000 Generic Specification for Special-Use Electromechanical Switches of Certified Qu
21、alityANSI EIA/TIA-568-B Commercial Building Telecommunications Cabling StandardANSI J-STD-004 Requirements for Soldering Fluxes2.4 FAA Standards:4Advisory Circular 20-53A Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Due To LightningAC 20-136 Protection of Aircraft Electrical/Elect
22、ronic Systems Against the Indirect Effects of LightningAC 21-160E RTCA Document DO-160EAC 23.1309-1C Equipment, Systems, and Installations in Part 23 AirplanesAC 25-16 Electrical Fault and Fire Prevention and ProtectionAC 25.869-1 Electrical System Fire and Smoke ProtectionAC 25.981-1B Fuel Tank Ign
23、ition Source Prevention GuidelinesAC 25.1353-1 Electrical Equipment and InstallationsAC 25.1357-1 Circuit Protective Device AccessibilityDOT/FAA/CT 86/8 Determination of Electrical Properties of Bonding and Fastening TechniquesDOT/FAA/CT-83/3 Users Manual for FAA Advisory Circular 20-53aDOT/FAA/CT-8
24、9-22 Aircraft Lightning Protection HandbookTitle14 Code of Federal Regulations Part 23 Airworthiness Standards: Normal, Utility, Acrobatic, and Commuter CategoryAirplanesTitle14 Code of Federal Regulations Part 25 Airworthiness Standards: Transport Category AirplanesTitle14 Code of Federal Regulatio
25、ns Part 27 Airworthiness Standards: Normal Category RotorcraftTitle14 Code of Federal Regulations Part 29 Airworthiness Standards: Transport Category RotorcraftTitle14 Code of Federal Regulations Part 31 Airworthiness Standards: Manned Free BalloonsTitle14 Code of Federal Regulations Part 33 Airwort
26、hiness Standards: Aircraft EnginesTitle14 Code of Federal Regulations Part 34 Fuel Venting and Exhaust Emission Requirements for Turbine Engine PoweredAirplanesTitle14 Code of Federal Regulations Part 35 Airworthiness Standards: PropellersTitle14 Code of Federal Regulations Part 36 Noise Standards:
27、Aircraft Type and Airworthiness Certification2.5 SAE Standards:5AMS-S-8802 Sealing Compound, Temperature-Resistant, Integral Fuel Tanks and Fuel Cell Cavities, High Adhesion (ReplacesMIL-S-8802)ARP 1199 Selection, Application, and Inspection of Electric Overcurrent Protective DevicesARP 1308 Preferr
28、ed Electrical Connectors for Aerospace Vehicles and Associated EquipmentARP 1870 Aerospace Systems Electrical Bonding and Grounding for Electromagnetic Compatibility and SafetyARP 1928 Torque Recommendations for Attaching Electrical Wiring Devices to Terminal Boards or Blocks, Studs, Posts, EtcARP 4
29、761 Guidelines and Methods for Conducting the Safety Assessment Process on Civil Airborne Systems and EquipmentARP 5369 Guidelines for Wire Identification Marking Using the Hot Stamp ProcessARP 5414 Aircraft Lightning ZoningARP 5583 Guide to Certification of Aircraft in a High Intensity Radiated Fie
30、ld (HIRF) EnvironmentAS 4372 Performance Requirements for Wire, Electric, Insulated Copper or Copper AlloyAS 4373 Test Methods for Insulated Electric WireAS 4461 Assembly and Soldering Criteria for High Quality/High ReliabilityAS 6136 Conduit, Electrical, Flexible, Shielded, Aluminum Alloy for Aircr
31、aft Installations. (Replaces MIL-C-6136)AS 7351 Clamp, Loop Type Bonding-FSC 5340 (replaces AN735)AS 7431 Bracket, Support Clamp-FSC 5340 (replaces AN743)AS 7928 Terminals, Lug: Splices, Conductor: Crimp Style, Copper, General Specification for (Replaces MIL-T-7928)AS 22759 Wire, Electrical, Fluorop
32、olymer-Insulated, Copper or Copper Alloy. (Replaces MIL-W-22759)2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM websi
33、te.3 Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:/www.ansi.org.4 Available from U.S. Government Printing Office Superintendent of Documents, 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.5 A
34、vailable from Society of Automotive Engineers (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.F2639 153AS 23190 Straps, Clamps, Plastic and Metal, and Mounting Hardware, Plastic for Cable Harness Tying and Support Clamp,Loop, Metal, Cushioned, Adjustable, Wire Support, Type
35、 V, Class 1-FSC (replaces MIL-S-23190)AS 25064 Conduit, Flexible, Radio Frequency Shielding use in place of MIL-C-7931?AS 25281 Clamp, Loop, Plastic, Wire Support-FSC 5340 (replaces MS25281)AS 25435 Terminal-Lug, Crimp Style, Straight Type, for Aluminum Aircraft Wire, Class 1 (Replaces MS254350)AS 2
36、5436 Terminal-Lug, Crimp Style, 90 Upright Type, for Aluminum Aircraft Wire, Class 1 (Replaces MS25436)AS 25438 Terminal-Lug, Crimp Style Right Angle Type, for Aluminum Aircraft Wire, Class 1 (Replaces MS25438)AS 33671 Strap, Tie Down, Electrical Components, Adjustable, Self Clinching, Plastic, Type
37、 I, Class 1 (Replaces MS3367)AS 50881A Wiring Aerospace Vehicle (Replaces MIL-W-5088)AS 70991 Terminal, Lug and Splice, Crimp Style Aluminum, for Aluminum Aircraft Wire. (Replaces MIL-T-7099E)2.6 Military Standards:4A-A-52080 Nylon Lacing Tape (replaces MIL-T-43435)A-A-52081 Polyester Lacing Tape (r
38、eplaces MIL-T-43435)A-A-52082 Tape, Lacing and Tying, TFE Fluorocarbon (tetra fluorocarbon) (replaces MIL-T-43435)A-A-52083 Tape, Lacing and Tying, Glass (replaces MIL-T-43435)A-A-52084 Tape, Lacing and Tying, Aramid (replaces MIL-T-43435)A-A-59163 Insulation Tape, Electrical, Self Adhering, Unsuppo
39、rted Silicone RubberAN735 ClampAN960JD10L Conductive WasherMIL-C-22520 Wire Termination Crimp ToolsMIL-C-26482 Connectors, Electrical, (Circular, Miniature, Quick Disconnect, Environment Resisting), Receptacles and Plugs,General Specification forMIL-C-39029 Contacts, Electrical Connector, General Sp
40、ecification forMIL-PRF-81309 Corrosion Preventative Compounds, Water Displacing, Ultra-Thin FilmMIL-DTL-22520 Crimping Tools, Wire Termination, General Specification for (replaces MIL-C-22520/2)MIL-DTL-27500 Cable, Power, Electrical and Cable Special Purpose, Electrical Shielded and Unshielded, Gene
41、ral SpecificationforMIL-DTL-5015 Connectors, Electrical, Circular Threaded, AN Type, General Specification forMIL-DTL-83723 Connectors, Electrical, (Circular, Environment Resisting), Receptacles and Plugs, General Specification forMIL-F-14256F Flux, Soldering, Liquid, Paste Flux, Solder Paste and So
42、lder-Paste Flux (for Electronic/Electrical use), GeneralSpecification forMIL-M-81531 Marking of Electrical Insulating MaterialsMIL-PRF-39016 Relays Electromagnetic, Established Reliability, General Specification forMIL-PRF-5757 Relays, Hermetically SealedMIL-PRF-6106 Relays, Electromagnetic, General
43、 Specification forMIL-PRF-83536 Relays, Electromagnetic, Established Reliability, 25 Amperes and Below, General Specification forMIL-S-8516 Sealing Compound, Polysulfide Rubber, Electric Connectors and Electric Systems, Chemically CuredMIL-STD-704 Aircraft, Electrical Power CharacteristicsMIL-T-8191
44、 Test and Checkout Equipment, Guided Missile Weapons Systems, General Specification for should this be SAEAMS-T-81914 replaces MIL-T-81914?MIL-W-25038 Wire, Electrical, High-Temperature, Fire Resistant, and Flight CriticalMIL-W-81044 Wire, Electric, Crosslinked Polyalkene, Crosslinked Alkine-Imide,
45、or Polyarylene Insulated, Copper or CopperAlloyMIL-W-81381 Wire, Electric, Fluorocarbon/Polyimide InsulatedMS21919 Cable ClampsMS25440 Flat WasherMS3057 Cable Clamp AdaptersMS3109 Boots, Heat-Shrinkable, Strain-Relief, Right AngleMS3115 Connectors, Receptacle, Electrical, Dummy Stowage, Bayonet Coup
46、ling, for MIL-C-26482 Connectors, Series 1 and2MS3117 Boots, Heat-Shrinkable, Strain-Relief, Right AngleMS3142 Connector, Receptacle, Electrical, Box Mounting, Solder Contact Hermetic, AN TypeMS3143 Connector, Receptacle, Electrical, Solder Mounting, Solder Contact Hermetic, AN TypeMS3158 Backshells
47、 Shrinkable Boot, for Electric ConnectorMS3180 Cover, Protective, Electrical Connector Plug, Bayonet Coupling for MIL-C-26482 ConnectorsMS3181 Cover, Protective, Electrical Connector Receptacle, Bayonet Coupling for MIL-C-26482 ConnectorsMS3416 Backshells, Straight, for Electrical ConnectorsMS3440 C
48、onnectors, Receptacle, Electric Series 2, Narrow Flange Mount, Bayonet Coupling, Solder Pin Contact Class HF2639 154MS3443 Connectors, Receptacle, Electric, Series 2, Solder Flange Mount, Bayonet Coupling, Solder Pin Contact Class HMS3450 Connectors, Receptacle, Electrical, Wall Mounting, Rear Relea
49、se, Crimp Contact, AN TypeMS3451 Connectors Receptacle, Electrical, Cable Connecting, Rear Release, Crimp Contact, AN TypeMS3452 Connector, Receptacle, Electric, Box Mounting, Rear Release, Crimp Contact, AN TypeMS3456 Connectors, Plug, Electrical, Rear Release, Crimp Contact, AN TypeMS3459 Connector, Plug, Electrical, Self-Locking, Coupling Nut, Rear Release, Crimp Contact, AN TypeMS3470 Connectors, Receptacle, Electric, Series 2, Single Hole Mount, Bayonet Coupling, Solder Pin Contact, Class HMS3471 Connector, Receptacle, Electric, Series 2, Crimp Type, Ca
