1、Designation: F 2639 07Standard Practice forDesign, Alteration, and Certification of Airplane ElectricalWiring Systems1This standard is issued under the fixed designation F 2639; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 DefinitionThis practice defines acceptable practicesand processes for the design, alteration, and certificatio
3、n ofelectric systems and installations in general aviation aircraft.This practice does not change or create any additional regula-tory requirements nor does it authorize changes in or permitdeviations from existing regulatory requirements.1.2 ApplicabilityThe guidance provided in this practice isdir
4、ected to air carriers, air operators, design approval holders,Supplemental Type Certificate (STC) holders, maintenanceproviders, repair stations, and anyone performing field ap-proval modifications or repairs.1.3 Protections and CautionsThis practice provides guid-ance for developing actions and cau
5、tionary statements to beadded to maintenance instructions for the protection of wireand wire configurations. Maintenance personnel will use theseenhanced procedures to minimize contamination and acciden-tal damage to electrical wiring interconnection system (EWIS)while working on aircraft.1.4 “Prote
6、ct 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
7、 EWIS during structural repairs, STCinstallations, or other alterations by making sure that metalshavings, debris, and contamination resulting from such workare removed.1.5 ValuesThe values given in inch-pound units are to beregarded as the standard. The values in parentheses are forinformation only
8、. See Appendix X2 for SI-based prefixes andpowers of 10.NOTE 1Where 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
9、 safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 Unless approved by the administrator, the latest revisionof the listed documents shall be used for reference.2.2 ASTM Standards:2F 2490 Guide for Aircraft Electrical Load a
10、nd PowerSource Capacity Analysis2.3 ANSI Standards:3ANSI/EIA-5200000 Generic Specification for Special-UseElectromechanical Switches of Certified QualityANSI EIA/TIA-568-B Commercial Building Telecommuni-cations Cabling StandardANSI J-STD-004 Requirements for Soldering Fluxes2.4 FAA Standards:4Advis
11、ory Circular 20-53A Protection of Aircraft Fuel Sys-tems Against Fuel Vapor Ignition Due To LightningAC 20-136 Protection of Aircraft Electrical/Electronic Sys-tems Against the Indirect Effects of LightningAC 21-160E RTCA Document DO-160EAC 23.1309-1C Equipment, Systems, and Installations inPart 23
12、AirplanesAC 25-16 Electrical Fault and Fire Prevention and Protec-tionAC 25.869-1 Electrical System Fire and Smoke ProtectionAC 25.981-1B Fuel Tank Ignition Source PreventionGuidelinesAC 25.1353-1 Electrical Equipment and InstallationsAC 25.1357-1 Circuit Protective Device AccessibilityDOT/FAA/CT 86
13、/8 Determination of Electrical Properties1This practice is under the jurisdiction ofASTM Committee F39 on Normal andUtility Category Airplane Electrical Wiring Systems and is the direct responsibilityof Subcommittee F39.01 on Design, Alteration, and Certification.Current edition approved Sept. 1, 20
14、07. Published October 2007.2For 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 American National
15、Standards Institute (ANSI), 25 W. 43rd St.,4th Floor, New York, NY 10036, http:/www.ansi.org.4Available 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.1Copyright ASTM International, 100 Barr Harb
16、or Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.of Bonding and Fastening TechniquesDOT/FAA/CT-83/3 Users Manual for FAAAdvisory Circu-lar 20-53aDOT/FAA/CT-89-22 Aircraft Lightning Protection Hand-bookTitle14 Code of Federal Regulations Part 23 AirworthinessStandards: Normal, U
17、tility, Acrobatic, and CommuterCategory AirplanesTitle14 Code of Federal Regulations Part 25 AirworthinessStandards: Transport Category AirplanesTitle14 Code of Federal Regulations Part 27 AirworthinessStandards: Normal Category RotorcraftTitle14 Code of Federal Regulations Part 29 AirworthinessStan
18、dards: Transport Category RotorcraftTitle14 Code of Federal Regulations Part 31 AirworthinessStandards: Manned Free BalloonsTitle14 Code of Federal Regulations Part 33 AirworthinessStandards: Aircraft EnginesTitle14 Code of Federal Regulations Part 34 Fuel Ventingand Exhaust Emission Requirements fo
19、r Turbine EnginePowered AirplanesTitle14 Code of Federal Regulations Part 35 AirworthinessStandards: PropellersTitle14 Code of Federal Regulations Part 36 Noise Stan-dards: Aircraft Type and Airworthiness Certification2.5 SAE Standards:5AMS-S-8802 Sealing Compound, Temperature-Resistant,Integral Fue
20、l Tanks and Fuel Cell Cavities, HighAdhesion(Replaces MIL-S-8802)ARP1199 Selection,Application, and Inspection of ElectricOvercurrent Protective DevicesARP 1308 Preferred Electrical Connectors for AerospaceVehicles and Associated EquipmentARP 1870 Aerospace Systems Electrical Bonding andGrounding fo
21、r Electromagnetic Compatibility and SafetyARP 1928 Torque Recommendations for Attaching Electri-cal Wiring Devices to Terminal Boards or Blocks, Studs,Posts, EtcARP 4761 Guidelines and Methods for Conducting theSafetyAssessment Process on CivilAirborne Systems andEquipmentARP 5369 Guidelines for Wir
22、e Identification Marking Us-ing the Hot Stamp ProcessARP 5414 Aircraft Lightning ZoningARP 5583 Guide to Certification of Aircraft in a HighIntensity Radiated Field (HIRF) EnvironmentAS 4372 Performance Requirements for Wire, Electric,Insulated Copper or Copper AlloyAS 4373 Test Methods for Insulate
23、d Electric WireAS 4461 Assembly and Soldering Criteria for High Quality/High ReliabilityAS 6136 Conduit, Electrical, Flexible, Shielded, AluminumAlloy for Aircraft Installations. (Replaces MIL-C-6136)AS 7351 Clamp, Loop Type Bonding-FSC 5340 (replacesAN735)AS 7431 Bracket, Support Clamp-FSC 5340 (re
24、placesAN743)AS 7928 Terminals, Lug: Splices, Conductor: Crimp Style,Copper, General Specification for (Replaces MIL-T-7928)AS 22759 Wire, Electrical, Fluoropolymer-Insulated, Cop-per or Copper Alloy. (Replaces MIL-W-22759)AS 23190 Straps, Clamps, Plastic and Metal, and MountingHardware, Plastic for
25、Cable Harness Tying and SupportClamp, Loop, Metal, Cushioned, Adjustable, Wire Sup-port, Type V, Class 1-FSC (replaces MIL-S-23190)AS 25064 Conduit, Flexible, Radio Frequency Shieldinguse in place of MIL-C-7931?AS 25281 Clamp, Loop, Plastic, Wire Support-FSC 5340(replaces MS25281)AS 25435 Terminal-L
26、ug, Crimp Style, Straight Type, forAluminum Aircraft Wire, Class 1 (Replaces MS254350)AS 25436 Terminal-Lug, Crimp Style, 90 Upright Type,forAluminumAircraft Wire, Class 1 (Replaces MS25436)AS 25438 Terminal-Lug, Crimp Style RightAngleType, forAluminum Aircraft Wire, Class 1 (Replaces MS25438)AS 336
27、71 Strap, Tie Down, Electrical Components,Adjust-able, Self Clinching, Plastic, Type I, Class 1 (ReplacesMS3367)AS 50881A Wiring Aerospace Vehicle (Replaces MIL-W-5088)AS 70991 Terminal, Lug and Splice, Crimp Style Alumi-num, for Aluminum Aircraft Wire. (Replaces MIL-T-7099E)2.6 Military Standards:4
28、A-A-52080 Nylon Lacing Tape (replaces MIL-T-43435)A-A-52081 Polyester Lacing Tape (replaces 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 (
29、replaces MIL-T-43435)A-A-59163 Insulation Tape, Electrical, Self Adhering, Un-supported Silicone RubberAN735 ClampAN960JD10L Conductive WasherMIL-C-22520 Wire Termination Crimp ToolsMIL-C-26482 Connectors, Electrical, (Circular, Miniature,Quick Disconnect, Environment Resisting), Receptaclesand Plug
30、s, General Specification forMIL-C-39029 Contacts, Electrical Connector, GeneralSpecification forMIL-PRF-81309 Corrosion Preventative Compounds, Wa-ter Displacing, Ultra-Thin FilmMIL-DTL-22520 Crimping Tools, Wire Termination, Gen-eral Specification for (replaces MIL-C-22520/2)MIL-DTL-27500 Cable, Po
31、wer, Electrical and Cable Spe-cial Purpose, Electrical Shielded and Unshielded, GeneralSpecification forMIL-DTL-5015 Connectors, Electrical, Circular Threaded,AN Type, General Specification for5Available from Society of Automotive Engineers (SAE), 400 CommonwealthDr., Warrendale, PA 15096-0001, http
32、:/www.sae.org.F2639072MIL-DTL-83723 Connectors, Electrical, (Circular, Envi-ronment Resisting), Receptacles and Plugs, GeneralSpecification forMIL-F-14256F Flux, Soldering, Liquid, Paste Flux, SolderPaste and Solder-Paste Flux (for Electronic/Electricaluse), General Specification forMIL-M-81531 Mark
33、ing of Electrical Insulating MaterialsMIL-PRF-39016 Relays Electromagnetic, Established Reli-ability, General Specification forMIL-PRF-5757 Relays, Hermetically SealedMIL-PRF-6106 Relays, Electromagnetic, General Specifi-cation forMIL-PRF-83536 Relays, Electromagnetic, Established Re-liability, 25Am
34、peres and Below, General Specification forMIL-S-8516 Sealing Compound, Polysulfide Rubber, Elec-tric Connectors and Electric Systems, Chemically CuredMIL-STD-704 Aircraft, Electrical Power CharacteristicsMIL-T-8191 Test and Checkout Equipment, Guided MissileWeapons Systems, General Specification for
35、 should thisbe SAE AMS-T-81914 replaces MIL-T-81914?MIL-W-25038 Wire, Electrical, High-Temperature, Fire Re-sistant, and Flight CriticalMIL-W-81044 Wire, Electric, Crosslinked Polyalkene,Crosslinked Alkine-Imide, or Polyarylene Insulated, Cop-per or Copper AlloyMIL-W-81381 Wire, Electric, Fluorocarb
36、on/Polyimide In-sulatedMS21919 Cable ClampsMS25440 Flat WasherMS3057 Cable Clamp AdaptersMS3109 Boots, Heat-Shrinkable, Strain-Relief, RightAngleMS3115 Connectors, Receptacle, Electrical, Dummy Stow-age, Bayonet Coupling, for MIL-C-26482 Connectors,Series 1 and 2MS3117 Boots, Heat-Shrinkable, Strain
37、-Relief, RightAngleMS3142 Connector, Receptacle, Electrical, Box Mounting,Solder Contact Hermetic, AN TypeMS3143 Connector, Receptacle, Electrical, Solder Mount-ing, Solder Contact Hermetic, AN TypeMS3158 Backshells Shrinkable Boot, for Electric Connec-torMS3180 Cover, Protective, Electrical Connect
38、or Plug,Bayonet Coupling for MIL-C-26482 ConnectorsMS3181 Cover, Protective, Electrical Connector Recep-tacle, Bayonet Coupling for MIL-C-26482 ConnectorsMS3416 Backshells, Straight, for Electrical ConnectorsMS3440 Connectors, Receptacle, Electric Series 2, NarrowFlange Mount, Bayonet Coupling, Sold
39、er Pin ContactClass HMS3443 Connectors, Receptacle, Electric, Series 2, SolderFlange Mount, Bayonet Coupling, Solder Pin ContactClass HMS3450 Connectors, Receptacle, Electrical, Wall Mount-ing, Rear Release, Crimp Contact, AN TypeMS3451 Connectors Receptacle, Electrical, Cable Connect-ing, Rear Rele
40、ase, Crimp Contact, AN TypeMS3452 Connector, Receptacle, Electric, Box Mounting,Rear Release, Crimp Contact, AN TypeMS3456 Connectors, Plug, Electrical, Rear Release, CrimpContact, AN TypeMS3459 Connector, Plug, Electrical, Self-Locking, Cou-pling Nut, Rear Release, Crimp Contact, AN TypeMS3470 Conn
41、ectors, Receptacle, Electric, Series 2, SingleHole Mount, Bayonet Coupling, Solder Pin Contact, ClassHMS3471 Connector, Receptacle, Electric, Series 2, CrimpType, Cable Connecting, Bayonet Coupling, ClassesA, L,S, and WMS3472 Connector, Receptacle, Electric, Series 2, CrimpType, Wide Flange Mounting
42、, Bayonet Coupling, ClassesA, L, S, and WMS3475 Connector, Plug Electric, RFI Shielded, Series 2,Crimp Type, Bayonet Coupling, Classes L, S, and WMS3476 Connector, Plug Electric, Series 2, Crimp Type,Bayonet Coupling, Classes A, L, S, and WMS25437 Terminal-LugMS35489 GrommetMS90387 Tool, Hand, Adjus
43、table for Plastic and Metal TieDown StrapsQQ-S-571 Solder, Electronic (96 to 485 Deg C)2.7 Other Standards:RTCA DO-160 Environmental Conditions and Test Proce-dures for Airborne Equipment6EIA 471 Symbol 1 A is theamount of current that flows when a difference of potential of1 V is applied to a circu
44、it with a resistance of one; 1 coulomb/s.3.1.5 antenna, ndevice designed to radiate or interceptelectromagnetic waves.6.Available from RTCA, Inc., 1828 L St., NW, Suite 805, Washington, DC20036.7Available from Electronic Industries Alliance (EIA), 2500 Wilson Blvd.,Arlington, VA 22201, http:/www.eia
45、.org8Available from National Electrical Manufacturers Association (NEMA), 1300N. 17th St., Suite 1752, Rosslyn, VA 22209, http:/www.nema.org.9Available from ICAO, Document Sales Unit, 999 University St., Montreal,Quebec H3C 5H7, Canada.F26390733.1.6 appliance, nany instrument, mechanism, equip-ment,
46、 part, apparatus, appurtenance, or accessory, includingcommunications equipment, that is used or intended to be usedin operating or controlling an aircraft in flight; is installed in orattached to the aircraft; and is not part of an airframe, engine,or propeller.3.1.7 arc fault circuit breaker (AFCB
47、), ncontains circuitryto cause circuit breaker to open when arcing faults are detected.3.1.8 arc resistance (noncarbon tracking), nmeasure ofthe ability of a material to resist physical penetration by anelectrical arc.3.1.9 avionics, nscience and technology of electronics asapplied to aviation.3.1.1
48、0 bond, nadhesion of one surface to another with orwithout the use of an adhesive as a bonding agent.3.1.11 bonding, vgeneral term applied to the process ofelectrically connecting two or more conductive objects.3.1.11.1 DiscussionIn aircraft, the purpose of bonding(except as applied to individual co
49、nnections in the wiring andgrounding systems) is to provide conductive paths for electriccurrents. This is accomplished by providing suitable low-impedance connections joining conductive aircraft componentsand the aircraft structure. Another purpose of bonding is toensure the safe passage of current caused by lightning or staticelectricity through the aircraft structure.3.1.12 bundle, nwire bundle consists of a quantity ofwires fastened or secured together and all traveling in the samedirection.3.1.13 bus or bus bar, nsolid copper strips to carrycurrent betwe
