# 电类部件的系统识别号（基本FIN号）

电类部件的系统识别号由2位字母组成 -

• 第一位：系统识别代码
• 第二位：电路识别代码

# 一、系统识别代码

• A、B - 保留，用于航空公司自定义（如航空公司认为某些没有FIN号的部件对于自己比较特别，需要FIN标识）
• C - 飞控系统
• D - 除冰系统
• E - 发动机监控
• F - 飞行仪表
• G - 起落架
• H - 空调
• J - 点火
• K - 发动机控制和启动
• L - 灯光
• M - 座舱(装饰)设施、设备
• P - 直流电分配系统
• Q - 燃油
• R - 无线电（导航通信）
• S - 雷达导航
• T - 特殊电器
• V - 虚拟电路
• W - 火警
• X - 交流电分配系统

# 二、电路识别码

同一个字母，在不同系统中的意义不一样，例如A，在飞控系统中表示自动推力接通，而在除冰系统中表示探头防冰。

# 三、系统识别号列表

系统识别号 = 系统识别代码+电路识别代码。

FIN号 = 前缀+系统识别号+后缀

# 1、C-飞控系统

• CA - 自动推力接通
• CA - 电力供给（FMGS）
• CA - 离散/数字接口（FMGS）
• CA - ARINC总线接口（FMGS）
• CC - 参与内部监控
• CC - 电气液压供给（FAC）
• CC - 离散/数字接口（FAC）
• CC - ARINC总线接口（FAC）
• CE - 控制(信号)输入(电路)的供电
• CE - ELAC系统
• CE - SEC系统
• CE - FCDC系统
• CN - 襟翼位置指示
• CN - 缝翼位置指示
• CV - 缝翼的电控监控
• CV - 襟翼的电控监控

# 2、D-除冰

• DA - 探头防冰
• DB - 风挡防雨
• DD - 结冰探测
• DG - 风挡防冰除雾
• DH - 逃生梯的锁机构防冰
• DL - 大翼防冰
• DN - 发动机进气道防冰
• DR - 机组暖脚
• DS - 辅助设备（含门区域的加热面板）
• DU - 排放桅杆防冰
• DV - 水勤务面板加热
• DW - 饮用水防冰

# 3、E-发动机监控

• EL - 燃油滤堵塞警告
• EG - 反推开关机构
• EN - 滑油指示的供电
• EV - 发动机振动指示

# 4、F-飞行仪表

• FH - HUD
• FN - 攻角指示
• FN - 备用数据：高度和空速
• FN - 备用数据：姿态和航向
• FN - 无线电磁航向信息-切换和指示
• FP - 传感器供电切换
• FR - 航班号提醒
• FS - 电子时钟
• FW - PVI
• FX - 机载机场导航

# 5、G-起落架液压

• GA - Normal extension retraction
• GB - Indicating warning
• GB - Landing gear-position information
• GC - Steering
• GD - Yellow main hydraulic power
• GE - Blue auxiliary hydraulic power (ram air turbine)
• GG - Normal braking
• GG - Alternate braking with anti skid
• GG - Alternate braking without anti skid
• GG - Parking/ultimate emergency braking
• GH - Reservoir pressurization indicating
• GJ - Blue main hydraulic power
• GK - Green main hydraulic power
• GL - Power transfer
• GN - Hydraulic fluid pressure indicating
• GP - Ground internal leak test system
• GQ - Hydraulic fluid quantity indicating
• GR - Hydraulic fluid temperature indicating
• GS - Brake cooling
• GT - Weight and balance system (WBS)
• GV - Tire pressure indicating system (TPIS)
• GW - Brake system temperature
• GX - Yellow auxiliary hydraulic power (electrical/hand pumps)

# 6、H-空调

• HA - Engine bleed air supply system
• HB - Flow control indicating
• HD - Avionics equipment ground cooling
• HC - Cargo compartment heating
• HF - Leak detection
• HG - Air distribution recirculation
• HH - Pack temperature control
• HJ - Door area heating
• HK - Cockpit cabin temperature control
• HL - Pressure control monitoring
• HN - Cargo compartment ventilation
• HP - Passenger compartment seats
• HQ - Avionics equipment ventilation
• HT - Control indicating
• HU - Lavatory/galley ventilation
• HV - APU bleed air supply and crossbleed systems
• HZ - Emergency ram air inlet

# 7、J-点火

• JH - Ignition starting and continuous relight

# 8、K-发动机控制和启动

• KA - Starting
• KB - Air intake system
• KC - Engine master control
• KD - Control monitoring
• KL - Emergency shutdown
• KS - Functional interfaces
• KT - APU oil heating

# 9、L-灯光

• LA - Navigation lights
• LB - Landing lights
• LC - Runway turnoff lights
• LE - General illumination
• LF - Instrument panel integral lighting
• LG - General illumination
• LJ - Service area lighting
• LK - Air conditioning duct accessory compt lighting
• LL - Wheel well lighting
• LN - Main deck cargo compartment lighting
• LP - Annunciator light test dimming
• LQ - Lavatory lighting
• LR - Taxi take off lights
• LS - Equipment compartment lighting
• LU - FWD-AFT cargo compartment lighting
• LV - Anti-collision/strobe lighting
• LW - Passenger reading lights
• LX - Wing engine scan lighting
• LY - Logo lights
• LZ - Cabin work, cabin attendant

# 10、M-座舱(装饰)设施、设备

• MA - Quantity indicating
• MB - Distribution
• MC - Galley supply
• MD - Air supply boost system
• ME - Electrical service supply
• MF - Supplementary medical equipment
• MG - Toilet system
• MH - Passenger information system
• MH - Passenger entertainment (video)
• MJ - Cargo compt door electrical control system
• MK - Passenger entertainment (music)
• ML - Forward galley
• ML - Mid galley unit
• ML - Aft galley
• MP - Water draining (dump)
• MQ - Passenger compartment fixed interior doors
• MS - Cockpit seats
• MT - Razor supply
• MV - Waste level indicating
• MW - Entrance stairs system
• MX - Miscellaneous emergency equipment
• MY - Semi automatic cargo loading

# 11、P-直流电分配

• PB - DC generation - batteries
• PC - DC essential normal generation switching
• PE - DC emergency generation (TR)
• PH - DC essential distribution
• PN - DC main distribution
• PP - DC ancillary equipment
• PR - Refuelling on battery
• PU - DC main generation (TR)
• PV - DC generation monitoring indicating
• PX - DC ground service bus control

# 12、Q-燃油

• QA - Main fuel pump system
• QC - APU fuel pump system
• QE - Crossfeed system
• QF - APU LP fuel shut off
• QG - Engine LP fuel shut off
• QH - Additional center tank transfer system
• QJ - Tank level sensing
• QL - Main transfer system
• QN - Fuel control and monitoring system (FCMS)
• QP - Intercell transfer system
• QS - Fuel recirculation - cooling
• QT - Quantity indicating
• QU - Refuel/defuel system

# 13、R-无线电（导航通信）

• RB - Aircraft communication addressing reporting system (ACARS)
• RC - VHF system
• RD - Pax facilities - air to ground telephone
• RE - HF/calsel aerocall system
• RF - Cabin management system
• RF - Cabin information network system (CINS)
• RG - Radio management
• RH - Cabin intercommunication DATA system (CIDS)
• RJ - Service interphone
• RK - Cockpit voice recorder
• RN - Audio management (integrating/flight interphone/selcal/call)
• RP - ADF
• RQ - On-Board Mobile Telephony System
• RR - Pax facilities` - AM/FM radio system
• RS - VOR/MARKER
• RT - ILS
• RU - MLS (microwave landing system)
• RV - Satellite communication
• RX - Announcement-music tape reproducer system
• RZ - Voice privacy system

# 14、S-雷达导航

• SA - Radio altimeter
• SD - DME
• SG - TCAS (traffic collision avoidance system)
• SH - ATC/Mode S (select)
• SN - Satellite navigation
• SQ - Weather radar system

# 15、T-特殊电器

• TA - On board peripherals and flight operational peripherals
• TD - Up and down data loading system acquisition/interface and equipment
• TL - Aircraft information network system
• TT - Gate link
• TU - Digital flight data recording sys. intercon. (FDIU, DFDR, LA, QAR)
• TU - DFRS input interface
• TV - AIDS interconnection (DMU, DAR.)
• TV - AIDS input interface
• TW - Centralized fault display interface (CFDIU)
• TW - Multifunction printing (printer)
• TX - Air trafic and information management system (ATIMS)

# 16、V-虚拟电路

• VB - Main wire routing (harnesses)
• VC - A/C electrical connectors
• VD - Diode module
• VG - Ground terminal block
• VH - Ground and resistor terminal module
• VN - Ground points
• VP - Pressure seal feedthrough
• VS - Splices
• VT - Terminal blocks
• VU - Panels
• VZ - Spare wires (ATA 2499 only)

# 17、W-火警

• WA - Avionics compartment smoke detection
• WC - Cockpit to ground crew call system
• WD - Engine fire overheat detection
• WE - Engine fire extinguishing
• WF - APU fire extinguishing
• WG - APU fire overheat detection
• WH - Cargo compartment smoke detection
• WJ - Passenger lighted signs
• WL - Cabin emergency lighting
• WN - Emergency escape slide release warning and overpressure warning systems
• WP - Evacuation signaling equipment
• WQ - Lavatory smoke detection
• WR - Control indicating
• WT - EIS - control
• WT - DMC - acquisition/interface
• WT - EIS - switching
• WV - SDAC - acquisition/interface
• WW - FWS - acquisition/interface
• WX - Cargo compartment fire extinguishing
• WZ - Ground proximity warning system (GPWS)

# 18、X-交流电

• XA - Galley supply control
• XB - Static inverter (generation)
• XC - AC essential generation switching
• XE - AC emergency generation (CSM/G, GCU)
• XG - AC external power control (GPCU)
• XH - AC essential distribution
• XN - AC main distribution
• XP - AC equipment ancillary
• XS - AC auxiliary generation (APU generator GCU)
• XT - Integrated drive generator system (IDG, GCU)
• XU - AC main generation
• XX - AC ground service bus control

# 19、Y-惰性气体

• YA - Inert gas generation system