AIRCRAFT ABBREVIATIONS & ACRONYMS A Ampere A Amber A Area A Alternate A Altitude A Air A Angstrom AA Arithmetical Average AA Autopilot Annunciator AAAS Alternative Audio Alert Select AACD Aging Airplane Corrosion Document AACP Aging Airplane Corrosion Program AACU Antiskid/Autobrake Control Unit AADF Angle of Attack Averaging Defeat AADS Analog Air Data System AAI Air-to-Air Identification AAIB Air Accidents Investigation Branch AAIP Analog Autopilot Improvement Program AAL Above Aerodrome Level AALS Altitude Acquire Level Switch AAM Autopilot Actuator Monitor AAS Airport Advisory Service A-ATCK Angle of Attack AATF Airworthiness Assurance Task Force AAU Audio Accessory Unit AAWG Airworthiness Assurance Working Group AB All Base A/B Autobrake ABBR Abbreviation ABM Abeam ABN Airborne ABNORM Abnormal ABS Autobrake System ABS Absolute ABSCU Auto Brake System Control Unit ABSORB Absorber ABSV Alternate Brake Selector Valve ABS VAL Absolute Value ABU Audio Balancing Unit ABV Above AC Alternating Current AC Aircraft AC Altitude Capture AC Automated Customized AC Advisory Circular (FAA) A/C Aircraft A/C Air Conditioning A*C Aircraft ACARS Arinc Communications, Addressing & Reporting System ACAU Air Conditioning Accessory Unit ACB Airplane Configuration Bulletin ACC Accessory ACC Accelerometer ACC Area Control Center ACC Active Clearance Control ACCEL Accelerate, Acceleration ACCEL Accelerometer ACCESS Accessory ACCLRM Accelerometer ACCU Accumulator ACCUM Accumulator ACCY Accessory ACDB Airport Characteristics Data Bank ACDO Air Carrier District Office ACE Altimeter Control Equipment ACE Air Cargo Equipment ACE Actuator Control Electronics ACEM Aircraft Equipment Modification ACESS Advanced Cabin Entertainment Service System ACFI Advisory Committee on Flight Information (FAA) ACFT Aircraft ACIA Asynchronous Communications Interface Adaptor ACIC Aeronautical Chart and Information Center ACK Acknowledge, Acknowledgment ACLOR Aileron Command Limit Override ACLS Altitude Capture Level Switch ACM Air Cycle Machine ACM Aileron Centering Mechanism ACMF Airplane Condition Monitoring Function ACMP Alternating Current Motor Pump ACMS Aircraft Condition Monitoring System ACMS Airplane Condition Monitoring System ACN Aircraft Classification Number ACO Aircraft Certification Office (FAA) ACOB Automatic Call Out Box ACOC Air Cooled Oil Cooler ACP Audio Control Panel ACP Altimeter Check Point ACQ Acquire, Acquisition ACQN Acquisition ACRU Avionics Cooling Refrigeration Unit ACS Air Conditioning System ACS Access ACS Active Control System ACS Airplane Configuration System ACS ACESS Configuration System ACSU Advanced Central Switching Unit ACT Active ACT Activity ACT Actual ACT Actuator ACTD Actuated ACTG Actuating ACTN Action ACTR Actuator ACTVT Activate ACU Antenna Coupler Unit ACU Acceleration Control Unit ACU Annunciator Control Unit ACU Auxiliary Control Unit ACV Altitude Capture Validity ACVR Alternating Current Voltage Ratio AD Airworthiness Directive (FAA) AD Aerodrome AD Airplane Datum A/D Analog-to-Digital ADAMS Airborne Data Analysis and Monitor System ADAS Auxiliary Data Acquisition System ADAU Auxiliary Data Acquisition Unit ADC Air Data Computer A/DC Analog to Digital Converter ADCN Advanced Drawing Change Notice A/D CONV Analog to Digital Converter ADD Addition ADF Automatic Direction Finder ADG Air Driven Generator ADI Attitude Director Indicator ADIF ADI Flag Inhibit ADIRS Air Data Inertial Reference System ADIRU Air Data Inertial Reference Unit ADIS Automatic Data Interchange System ADJ Adjust, Adjustable, Adjustment ADJMT Adjustment ADL Airborne Data Loader ADM Air Data Module 1 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS ADP Air Driven Pump ADP Automatic Data Processing ADPTN Adaptation ADPTR Adapter ADR Advisory Route ADRS Address ADS Air Data System ADS Audio Distribution System ADU Align Display Unit ADU Air Drive Unit ADV Advisory AEA Association of European Airlines AEB Airline Engineering Bulletin AEEA Aft Electronics Equipment Area AEEC Airlines Electronic Engineering Committee AEG Aircraft Evaluation Group (FAA) AEM Audio Entertainment Multiplexer AEP Audio Entertainment Player AERNO Aeronautical Equipment Reference Number AERO Aerodynamic AERODYN Aerodynamic AES Aircraft Earth Station AESC Aft Electronic Service Center AEW Airborne Early Warning AEX Access Authorized AF Audio Frequency AF All Freighter AF DME Arc to Fixed Waypoint AF Align Fader Switch Logic AF Air Force Standards A/F Auto Flight A/F Autofeather AFB Antifriction Bearing AFC Automatic Frequency Control AFC Automatic Flight Control AFCR Air Flow Control Regulation AFCS Automatic Flight Control System AFCS Avionic Flight Control System AFD Automatic Flight Director AFDC Autopilot Flight Director Computer AFDS Autopilot/Flight Director System AFL Air Flow AFL Aileron Force Limiter AFM Airplane Flight Manual AFMC Advanced Flight Management Computer AFM-DPI Airplane Flight Manual-Digital Performance Information AFOLTS Automatic Fire Overheat Logic Test System AFQGS Advanced Fuel Quantity Gauging Sytem AFR Airframe AFS Autoflight System AFS Aging Fleet Survey AFSC Ancillary Fuel System Controller AFT Aftward AFT After AFTN Aeronautical Fixed Telecommunication Netword AFTR After AG Approach Gate A/G Air/Ground AGB Accessory Gearbox AGC Automatic Gain Control AGCU Auxiliary Generator Control Unit AGIS Air/Ground Indication System AGL Air to Ground Level AGL Above Ground Level AGMT Augment AGR Auxiliary Generator Relay AGS Automatic Ground Spoilers AGS Air/Ground System AGSB Auto Ground Speed Brake AGSS Air/Ground Safety Sensor AGT Agent AGW Actual Gross Weight AH Alert Height AH Ampere Hour AHE Altitude Hold Engaged AHG Altitude Hold Good AHP Anti Hijacking Panel AHRS Attitude Heading Reference System AHRU Attitude and Heading Reference Unit AHS Altitude Hold Selected
AI Anti-Icing AI Accuracy Index AI Analog Input A/I Anti-Ice AIA Aerospace Industry Association AIA American Institute of Aeronautics AIAA American Institute of Astronautics and Aeronautics AICC Aviation Industry CBT Committee AID Aircraft Installation Delay AIDS Aircraft Integrated Data System AIG Accident Investigation AIL Aileron AIM Action Item-Miscellaneous AIM Acknowledgement, ISO alphabet numbers and Maintenance AIMS Airplane Information Management System AIP Aeronautical Information Publication AIR Airplane Airborne AIR COND Air Conditioning AIRGND Air/Ground AIR/GRD Air/Ground AIRS Airline Inventory Redistribution System AIRSPD Airspeed AIS Aeronautical Information Service AISI American Iron and Steel Institute AITI Area Inspection Task Items AIV Accumulator Isolation Valve AJ Assembly Jig AL Alumel AL Autoland Al Aluminum A/L Approach/Land A/L Autoland ALC Automatic Load Control ALCMD Autoland Command ALCS Autopilot Lateral Control Servo ALDB Airline Database ALERFA Alert Phase ALICS Airline Inventory Control System ALIGN Alignment ALIM Align Mode ALM Alarm ALN Align ALPHA Angle of Attack ALPHA Minimum Speed Control Mode ALPHANUM Alphanumerical ALR Alert ALS Aft Limit Switch ALS Approach Light System ALS Aircraft Landing Systems ALT Altitude ALT Altimeter ALT Alternate ALT ACQ Altitude Acquire 2 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS ALT A/P Alternate Autopilot ALT CAP Altitude Capture ALT CAPT Altitude Capture ALT HOLD Altitude Hold ALTM Altimeter ALTN Alternate ALTNT Alternate ALTRK Approach Land Track ALT SEL Altitude Select ALT-T Altitude Trip (Takeoff, GA) ALT TO Alternate To ALU Arithmetic and Logic Unit ALV Autoland Validity AM Amplitude Modulation Am Amercium AMB Ambient AMB Amber AMB Aircraft Maintenance Base AMC Acceptable Means of Compliance AMETS Airplane Maintenance Engineered Time Standards AMI Airplane Modifiable Information AMLCD Active Matrix Liquid Crystal Display AMM Ammeter AMM Aircraft Maintenance Manual AMOC Alternate Means of Compliance (FAA) AMP Amperes, Amperage AMP Amplifier AMP HR Ampere-Hour AMPL Amplifier AMPL Amplitude AMPU Aircraft Modular Power Unit AMRE Airplane Maintenance and Repair Engineering AMRN Advance Modification Revision Notice AMS Aeronautical Material Specifications AMS Aerospace Material Specification AMS American Material Specifications AMT Amount AMTI Airborne Moving Target Indicator AMTOSS Aircraft Maintenance Task Oriented Support System AMU Audio Management Unit AMUX Audio Multiplexer AN Air Navigation AN Normal Acceleration AN Army-Navy Standard AN Air Force-Navy Aeronautical Standards A/N Autonetics ANAL Analysis ANAV Automated Navigation ANCDU Alternate Navigation Control Display Unit ANCPT Anticipate ANCPTR Anticipator AND Aircraft Nose Down ANG Angle ANLG Analogic ANN Annunciator ANNCT Announcement ANN LT Annunciator Light ANNUN Annunciator ANNUNC Annunciator ANPT Aeronautical National Taper Pipe Threads ANPT American National Pipe Thread ANS Alternate Navigation System ANS Ambient Noise Sensors ANSI American National Standards Institute ANT Antenna ANTI-COLL Anti-Collision ANU Aircraft Nose Up AO Access Opening AOA Angle Of Attack AOA Angle Of Airflow AOAS Angle Of Attack Sensor AOB All Overseas Base AOC Approach On Course AOC Air Oil Cooling AOE Automatic Overwing Exit AOG Aircraft On Ground AOL All Operators Letters AOM Aircraft Operating Manual AOX Air/Oil Cooler AP Autopilot AP Airborne Printer AP Airport AP Auxiliary Power A/P Autopilot A/P Airplane A& Airframe and Powerplant APB Auxiliary Power Breaker APB APU Breaker APCH Approach APCMD Autopilot Command APCS Autopilot Pitch Control Servo APCU Auxiliary Power Control Unit APD Approach Progress Display APE Autopilot Engaged AP/FD Autopilot/Flight Director APFDS Autopilot Flight Director System APFE Autopilot First Engaged API Angle Position Indicator
API Air Position Indicator APID Airplane Identification APL Airplane APL Assembly Parts Lists APM Airplane Performance Monitoring APNFF Autopilot No First Failure APP Approach APP Appearance APPC Approach Control APPD Approach Disconnect APPD Approved APPE Approach Engage APPLE Approach Land Engaged APPR Approach APPROX Approximately APR Approach APR Automatic Performance Reserve APR Auxiliary Power Relay APRCH Approach APRT Airport APS Aircraft Prepared for Service APS Auxiliary Power Supply APS APU Power Switch APSE Autopilot Servo Engaged APT Airport APU Auxiliary Power Unit APUC Auxiliary Power Unit Controller APUCU APU Control Unit APUIC APU Interface Card AQS Advanced Quality System AR As Required AR Approved Repairs A/R Altitude Rate A&R Assembly and Repair ARAC Aviation Rule-making Advisory Committee ARB Air Registration Board 3 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS ARC Automatic Rollout Control ARGS Autopilot Rollout Guidance Servo ARINC Aeronautical Radio Incorporated ARINC STP ARINC I/O UART data Strip ARMD Armed ARMG Arming ARND Around ARO After Receipt Order ARP Aerodrome Reference Point ARP Airport Reference Point ARP Aeronautical Recommended Practices ARPT Airport ARR Arrival, Arriving ARRA Arizona Radiation Regulatory Agency ARSR Arrestor ART Active Repair Time ART Auto Reserve Thrust ARTCC Air Route Traffic Control Center ARTCLD Articulated ARTF Artificial ARTS Aircraft Recovery Transportation System ARU Altitude Rate Unit AS Altitude Select AS Airspeed AS Airscoop AS Aerospace Standards A/S Airspeed A/S Antiskid A/S Auto Stabilization ASA Autoland Status Annunciator ASA All Speed Aileron ASAE Altitude Select Arm Engaged ASAERST Altitude Select Arm Engaged Reset ASAP As Soon As Possible ASAS Airborne Separation Assurance System ASAS Altitude Select Arm Selected ASAS Abnormal Start Advisory System ASAT Automated Spar Assembly Tool ASC Automatic Sensitivity Control ASC Aural Synthesizer Card ASCD Ascend ASCII American Standard Code for Information Interchange ASCPC Air Supply and Cabin Pressure Controller ASCS Air Supply Control System ASCTU Air Supply Control and Test Unit ASCU Anti Skid Control Unit ASD Accelerate Stop Distance ASE Airborne Support Equipment ASE Airspeed Error ASE Airline Support Engineer ASE Auto Slat Extend ASF Amperes per Square Foot ASG ARINC Signal Gateway ASG APU Starter Generator ASI Airspeed Indicator ASI Air Safety Investigation A/SKID Anti Skid ASM American Society for Metals ASM Airspeed Mode ASM Autothrottle Servo Motor AS/M Airspeed/Mach ASME American Society of Mechanical Engineers ASN Assigned System Number ASN Airplane Serial Number ASP Audio Selector Panel ASP Altitude Select Panel ASP Aspirated (tat probe) ASPD Airspeed ASR Airport Surveillance Radar ASS Auxiliary Spar Station ASSEM Assemble ASSY Assembly AST Automatic Stabilizer Trim A/STAB Auto Stabilizer ASTM American Society for Testing and Materials ASTP Automatic Stabilizer Trim Potentiometer ASTU Automatic Stabilizer Trim Unit ASU Attendant Service Unit ASU APU Starter Generator ASWC Advanced Stall Warning Card ASYM Asymmetry ASYM Asymmetric, Asymmetrical AT Autothrottle A/T Autothrottle A/T Adjustment/Test A&T Assembly and Test ATA Air Transport Association ATA Actual Time of Arrival ATB Air Turn Back ATC Air Traffic Control ATC Accelerometer Test Complete ATCH Attach, Attachment ATCK Attack ATCN Advance Tool Change Notice ATCRB Air Traffic Control Radar Beacon ATCRBS Air Traffic Control Radar Beacon System ATCSS Air Traffic Control Data Link Signaling System ATCT Air Traffic Control Tower ATE Automatic Test Equipment ATE Automated Test Equipment ATE Auto Throttle Engaged ATEC Automatic Test Equipment Complex AT ENG Auto Throttle Engaged A/THR Automatic Thrust ATI Advanced Technology Interior ATI Auto Throttle Inhibit ATIS Air Terminal Information Service ATIS Automatic Terminal Information Service ATLAS Abbreviated Test Language for Avionics Systems ATM Air Turbine Motor ATM Available Ton-Mile ATM Atmosphere ATMS Advanced Text Management System ATOR Auto Throttle Override ATR Austin-Trumbull-Radioracking ATR Automatic Thrust Restoration ATR Auto Tune Radio ATS Auto-Throttle System ATS Auto Throttle Servo ATS Automatic Test Station ATS ACESS Test System ATSCV Air Turbine Starter Control Valve ATSD Auto Throttle Servo Disconnect ATSEL Altitude Select ATT Attitude ATT Flight Attendant ATTC Automatic Takeoff Thrust Control ATTD Attitude ATTEN Attenuation, Attenuator ATTEND Attendant ATTF Attitude Flag ATTN Flight Attendant ATTN Attention ATTND Flight Attendant ATT REF Attitude Reference 4 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS ATV Auto Trim Valid ATZ Aerodrome Traffic Zone AUD Audio AUD Audible AUG Augment, Augmentation AUT Automatic AUTH Authorize, Authority AUTO Automatic AUTOCAL Autocalibration AUTODADS Automatic Digital Air Data Computer Selection AUTOLAND Automatic Landing AUW All-Up Weight AUX Auxiliary AV Average AV Altitude Hold Validity AVAIL Available AVC Automatic Volume Control AVG Average AVIONICS Aviation Electronics AVM Airborne Vibration Monitor AVN Aviation AVNCS Avionics AVPAC Aviation VHF Packet Communications AVRS Audio/Video Recording System AVS Audio Visual System AVSAT Aviation Satellite AVT Audio Visual Training AVT Audio Visual Tutorial AWACS Airborne Warning And Control System AWB Air Way Bill AWG American Wire Gauge AWG Audible Warning Generator AWLS All Weather Landing System AWN Airworthiness Notice AWOS Automatic Weather Observing System AWS American Welding Society AWU Aural Warning Unit AWY Airway AX Access Authorized AX Longitudinal Acceleration A/XFMR Autotransformer AY Lateral Acceleration AY Assembly AZ Azimuth AZ Vertical Acceleration AZFW Actual Zero Fuel Weight B Blue B Both BA Bundle Assembly BA Balance Arms B/A Bank Angle BAC Boeing Standards BACD Boeing Design Detail BACS Bleed Air Control System BAF Baffle BAL Balance BAL Basic Assembly Language BALTI Inertial Barometric Altitude BAP Bank Angle Protection BAR Barometric, Barometer
BAR Barometric Altitude Rate BAR Bleed Air Regulator BARC Barometric Altitude Rate Computer BARF Barometric Altitude Rate Flag BARO Barometric BAT Battery BATT Battery BAV Bleed Air Valve BB Bar Bias BB Broad Band BB Ball Bearing B/B Back Beam BBL Body Buttock Line BBRG Ball Bearing BC Back Course BC Baggage Container BCAA British Civil Aviation Authority BCAG Boeing Commercial Airplane Group BCAR British Civil Airworthiness Requirements BCAS Beacon Collision Avoidance BCD Binary Coded Decimal BCF Bromochlorodifluoromethane BCK Back BCLM Baggage/Cargo Loading Manual BCN Beacon BCR BOECOM Change Report BCRS Backcourse B/CRS Backcourse BCS Block Check Sequence BCS Boeing Computer Services BCSM Boeing Customer Services Manager BCSR Boeing Customer Services Representative BCU Bus Control Unit BCU Battery Control Unit BCU Brake Control Unit BCV Bore Cooling Valves BD Beginning of Descent BD Board B/D Bottom of Descent B/D Bearing/Distance BDL Bundle BDS Boeing Design Standard BDY BLK Burndy Block Be Baume BED Beam Error Detector (glideslope) BEL CRK Bellcrank BER Beyond Economical Repair BETA Sideslip Suppression System BETA Angle of Sideslip BETW Between BEV Bevel BEW Basic Empty Weight BFDAS Basic Flight Data Acquisition System BFE Buyer Furnished Equipment 5 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS BFO Beat Frequency Oscillator BFR Buffer BFR Before BFS Boeing Field Service BG Body Gear BG Build Group BGC Build Group Component BGM Boarding Music BGS Build Group Stack-up BGW Basic Gross Weight BH Brinell Hardness BHD Bulkhead BHE Bank Hold Mode Engaged BHN Brinell Hardness Number BHP Brake Horsepower BHP-HR Brake Horsepower Hour BIFI Bifurcation BIFUR Bifurcation BIST Built in Self Test BIT Built-In-Test BITE Built-In-Test-Equipment BK Brake BK Black BK Book BKGD Background BKGRD Background BKR Breaker BL Buttock Line BL Bleed BL Brake Lever B/L Blue Line BLC Boundary Layer Control BLD Bleed BLDG Building BLG Body Landing Gear BLK Black BLKHD Bulkhead BLKT Blanket BL-L Buttock Line Left BL-R Buttock Line Right BLO Buttock Line Zero BLO Below BLO Blower BLS Bezel Light Sensor BLSA Beam Level Switch A BLSB Beam Level Switch B BLST Ballast BLT Bolt BLU Blue BLV Bleed Valve BLW Below BM Beam BM Back Course Marker BM Bulk Material BMEP Brake Mean Effective Pressure BMS Boeing Material Specification BMT Boeing Materials Technology BMV Brake Metering Valve BND Bonded BNDG Bonding BNDRY Boundary BNR Binary BNR Binary Numerical Reference BNY Binary BO Blocking Oscillator BOD Bottom Of Descent BOECOM Boeing Communications BOH Break-Off Weight BOLD Boeing On Line Data BOT Bottom BOT Beginning Of Tape B/OUT Breakout BOV Bar Out of View BOV Biased Out of View BP Bandpass BP Bottom Plug BP Blueprint BP Baseline Program BPCU Bus Power Control Unit BPI Brake Pressure Indicator BPI Boeing Process Instruction BPP Bus Protection Panel BPS Boeing Part Specifications BR Buildup Relay BR Brown BRC Brace BRD Braid BRD Boarding BRDG Bridge BRG Bearing BRIL Brilliance BRK Brake BRKR Breaker BRKRS Breakers BRKS Brakes BRKT Bracket BRN Brown BRP Body Reference Plane BRT Bright, Brightness BRZ Bronze BS Body Station BSC Basic BSCU Brake System Control Unit B/SEC Bits per Second BSHG Bushing BSOPM Boeing Standard Overhaul Practices Manual BSS Boeing Support Standard BSSI Boeing Support Services International BST Boost BSTA Body Station B STA Body Station BSU Beam Steering Unit BSV Burner Staging Valve BSWPM Boeing Standard Wiring Practices Manual BSY Busy BT Bus Tie BT Bogie (truck) Tilt BTB Bus Tie Breaker BTBS Bus Tie Breakers BTC Bus Transfer Contactor BTL Bottle BTLCS Brake Torque Limiting Control System BTMU Brake Temperature Monitor Unit BTN Button BTN Boeing Telecommunications Network BTR Bus Tie Relay
BTRY Battery BTS Boeing Technology Services BTU British Thermal Unit BU Battery Unit BU Back Up BUCCS Boeing Uniform Classification and Coding System BUG Reference Marker (A/S or EPR) BUT Button BVA Bleed Valve Actuator 6 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS BVA Bleed Valve Angle BVCU Bleed Valve Control Unit BWL Body Water Line BYP Bypass BZO Benzyl Peroxide C Common C Centigrade, Celsius (degrees) C Center C Cold C Clear C Close C Captain C Convertible C Cyan C Comparator C Capacitor CA Cable CAA Civil Aviation Authority CAA Civil Airworthiness Administration CAB Cabin CAB Civil Aeronautics Board CAB PRESS Cabin Pressurization CAC Caution Advisory Computer CAC Center Accessory Compartment CACC Cargo Air Conditioning Card CACP Cabin Area Control Panel CACTCS Cabin Air Conditioning and Temperature Control System CACV Condition Air Check Valve CAD Computer Aided Design CAD Central Air Data CAD Cadmium CADC Central Air Data Computer CADS Central Air Data System CAE Computer Aided Engineering CAF Coarse Alpha Fail CAGE Commercial And Government Entity CAH Cabin Attendant Handset CAI Combustion Area Inspection CAI Cabin Altitude Indicator CAL Calibrate, Calibration CAL Comparator Autoland CAL Comparator Aileron CALC Calculate CALC Cargo Acceptance and Load Control CALIB Calibrator CALSEL Call Select CAM Camera CAM Computer Aided Manufacturing CAM Crew Alertness Monitor CAN Canopy CAN Comparator Accelerometer CANC Cancel, Cancelled CANTIL Cantilever CAO Cargo Aircraft Only CAP Capture CAP Capacitor CAP Capacity CAP Cap and Stow CAPLTY Capability CAPT Captain CAR Cargo CAR Computer Aided Recertification CAR Civil Air Regulation CARP Carpet CARR Carrier CAS Computed Air Speed CAS Calibrated Air Speed CAS Calculated Air Speed CAS Collision Avoidance System CAS Customer Assembled Spare CASS Casserole CASV Computed Airspeed Validity 7 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS CAT Category CAT Clear Air Turbulence CATS Computer Aided Training System CATIA Computer-Aided Three-dimensional Interactive Applications CAU Circular Area Units CAUT Caution CAWC Central Aural Warning Computer CAWP Caution And Warning Panel CAWS Central Aural Warning System CAY Comparator Lateral Accelerometer CB Circuit Breaker C/B Circuit Breaker CBAL Counterbalance CBIT Continuous Built-In-Test CBM Check Balance Moment CBMS Circuit Breaker Monitoring System CBO Cycles Between Overhaul CBORE Counterbore CBP Compressor Bleed Pressure CBR California Bearing Ratio CBS Circuit Breakers CBS Cutback Stator CBSV Cycles Between Scheduled Visits CBT Computer Based Training CBT Circuit Breaker Panel CC Compass Coupler CC Combustion Case CC Cubic Centimeter CCA Central Control Actuator CCA Circuit Card Assembly CCB Converter Circuit Breaker CCC Crash Crew Cart CCC Compressor Clearance Control CCCV Core Compartment Cooling Valve CCD Comparator Course Data CCD Cursor Control Device CCDL Cross Channel Data Link CCG Customer Configuration Guide CCIO Central Customer Information Organization CCL Cargo Control Logic CCM Cargo Control Module CCQ Crew Cross Qualification CCR Credit Card Reader CCS Cabin Configuration System CCSD Configuration Change Support Data CCTM Cabin Configuration Test Module CCU Cargo Control Unit CCU Cabin Control Unit CCV Customized Chapters Volume CCW Counter Clockwise CCW Curtailment Check Weight CCWS Comparator Control Wheel Steering CD Control Display CD Case Drain CD Cold Drawn CD Count Drag C/D Case Drain CDB Configuration Database CDC Cyclic Redundancy Code CDE Consumption Data Exchange Card CDG Configuration Database Generator CDI Course Deviation Indicator CDL Configuration Deviation List CDL Configuration Data Loader CD MON Course Datum Monitor CDP Compressor Discharge Pressure CDP Control and Dim Panel (EFIS) CDR Customer Data Requirement CDS Cold Drawn Steel CDS Common Display System CDT Cabin Data Terminal CDU Control Display Unit CDU Center Drive Unit CDU Cockpit Display Unit C/DU Control/Display Unit CDX Control Differential Transformer CDX Controlled Differential Transformer CEB Customer Engineering Bulletin CEC Combi Exhaust Controller CEGT Corrected EGT CEL Celestial CENT Centrifugal CERT Certify CESM Commercial Engine Service Memorandum CEU Converter Electronics Unit CEU Cargo Electronics Unit CEV Clutch Electro Valve CF Course to a Fixed Waypoint CF Control Wheel Force CF Centrifugal Force CF Checking Fixture (tool) CF Cost Factor CFAIL Critical Failure CFD Comparator Flight Director CFD Continuous Fire Detection CFD Comparator Faded Decrab CFDIU Central Fault Display Interface Unit CFDU Continuous Fire Detection Unit CFE Customer Furnished Equipment CFH Cubic Feet per Hour CFM Cubic Feet per Minute CFMI CFM International CFPT Computer Flight Plan Time CFR Code of Federal Regulations CFRP Carbon Fiber Reinforced Plastic CFS Cold Finished Steel CFS Cubic Feet per Second CG Center of Gravity CG Centigram CGF Color Guard Fabric CGG Cool Gas Generator CGM Computer Graphics Metafile CGO Cargo CGS Centimeter-Gram-Second CH Channel CH Chromel CH Center Hatrack CH Charge CH* Comparator Vertical Rate CH-A Channel A CHAM Chamfer CHAN Channel CHAR Character CHAS Chassis CHAV Compressor Heating Air Valve CH-B Channel B CHEM Chemical CHG Charge CHG Change CHGR Charger CHK Check CHK GWT Check Gross Weight CHKPT Checkpoint CHM Chime CHMBR Chamber 8 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS CHNG Changer, Changeover CHNGS Changes CHNL Channel CHR Chronograph CHRGR Charger CHRO Chronometer CHRONO Chronometer CI Cast Iron CI Course to an Intercept CI Cost Index CI Cabin Interphone CIC Cabin Interphone Controller CIC Corrosion Inhibiting Compound CIH Cabin Interphone Handset CIM Continuous Image Microfilm CIP Cost Improvement Program CIP Cartridge In Place CIP Cabin Interphone CIR Circular CIRC Circulate CIRC Circumference CIS Cabin Interphone System CIS Cycles In Service CIT Compressor Inlet Temperature CIWS Central Instrument Warning System CK Check CKD Checked CKPT Cockpit CKS Countersink CKT Circuit CKTS Circuits CL Climb CL Center Line CL Close CL Center of Lift CL Clip CL Clutch CL Centiliter C/L Check List C/L Center Line C/L Cumulative Line (position) CLA Condition Lever Angle CLASS Classification CLB Climb CLCP Central Lateral Control Package CLD Closed CLG Ceiling CLG Cooling CLK Clock CLN Colon CLNG Cooling CLNR Cleaner CLOG Clogging CLP Clamp CLPR Clapper CLQ Closed Loop Torque function CLR Clear CLR Clearance (altitude) CLR ALT Clearance Altitude CLRD Cleared CLS Cabin Lighting System CLS Cargo Loading System CLS Continuous Level Sensor CLSD Closed CLSG Closing CLTM Component Location Training Manual CLV Clevis CM Centimeter CM Crew Member CM Call Maintenance CM Collective Modification CM Condition Monitoring CM Continuous Monitor CMA Comma CMC Central Maintenance Computer CMCF Central Maintenance Computing Function CMCS Central Maintenance Computer System CMD Command CMDD Command Drive (solenoid hold) CMDHS Command Hold Solenoid CMDS Command Switch CMEU Cabin Management Expansion Unit CMFLR Cam Follower CMM Component Maintenance Manual CMM Common Mode Monitor CMO Certification Management Office (FAA) C-MOS Complementary Metal Oxide Semiconductor CMP Customized Maintenance Program CMP Configuration, Maintenance, Procedures (document) CMP Condition-Monitoring Program CMPLRY Complementary CMPNT Compartment CMPNT Component CMPS Compass CMPS Centimeters Per Second CMPS Computerized Maintenance Planning System CMPS CPLR Compass Coupler CMPTG Computing CMPTR Computer CMR Certification Maintenance Requirement CMRB Condition Monitoring Review Board CMRLR Cam Roller CMS Central Maintenance System CMS Cabin Management System CMS Code Material Society CMT Cabin Management Terminal CMU Central Management Unit CN1 Corrected N1 CN2 Corrected N2 CNA Common Nozzle Assembly CNCT Connect CNCTD Connected CNCTN Connection CNCTR Connector CNCTRC Concentric CNCV Concave CND Conduit CNI Communications, Navigation, and Identification CNTL Control CNTNR Container CNTOR Contactor CNTR Counter CNTRL Control CNX Cancelled CO Company CO Cut-Off CO Change Order
CSE Customer Support Engineering CSEU Control Systems Electronic Unit CSI Cycles Since Installation CSI Computer Software Index CSK Countersink CSKH Countersunk Head CSL Console CSM Cabin System Module CSM Cabin Service Module CSM Command and Service Module CSM Computer Software Manual CSMS Customer Services and Material Support CSMU Cabin System Management Unit CSN Catalog Sequence Number CSQ Quiet Climb System (FMC) CSR Customer Service Representative CSRM Computing Security Requirements Manual CSS Channel Select Switch CSS Cabin Service System CSTG Casting CSTR Constraint CSV Cycles Since Last Shop Visit CSU Central Switching Unit CT Control Transformer CT Current Transformer CT Confidence Test CT Center Tap CT Center Tape CT Cost CT Comparator Throttles C/T Common To CTA Current Transformer Assembly CTA Control Area CTAI Cowl Thermal Anti-Ice CTAS Comparator True Airspeed CTC Cabin Temperature Controller CTD Column Timer Decoder CTD Cross Track Deviation CTF Central Test Facilities CTFOS Customer Training and Flight Operations Support CTG Comparator Takeoff and Go Around CTK Capacity Tonne Kilometre CTL Control CTL Central CTM Cycle Time Monitor CTM/POR Cycle Time Monitor/Power On Reset CTN Caution CTR Center CTR Contour CTR Control Zone CTRD Centered CTRL Control CTS Contrast CTS Clear To Send CTSK Countersunk CTU Cabin Telecommunications Unit CTW Center Wing Tank CTWT Counterweight CU Computer Unit CU Control Unit CU Cubic Cu Copper CU FT Cubic Foot CU IN Cubic Inch CUM Cumulative CUR Current CUST Customer CV Control Valve CV Check Valve CVR Cockpit Voice Recorder CW Clockwise CW Continuous Wave CW Control Wheel CW Caution and Warning C/W Caution and Warning C&W Caution and Warning CWD Control Wheel Disconnect CWE Control Wheel Engaged CWF Control Wheel Force CWG Cockpit Working Group CWS Control Wheel Steering CWSD Control Wheel Steering Solenoid Drive CWSHS Control Wheel Steering Hold Solenoid CWSS Control Wheel Steering Switch CWT Center Wing Tank CWY Clearway CX Control Transmitter CXN Cancellation CY Calendar Year, Current Year CYL Cylinder 11 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS D Derated D Delayed D Diameter DA Drift Angle DA Direct Access DA Double Amplitude D/A Digital-to-Analog DAA Digital Analog Adapter DABS Discrete Address Beacon System DAC D/A Converter DAC Digital Audio Control DAC Double Annular Combustor DADC Digital Air Data Computer DADS Digital Air Data System DAES Digital Audio Entertainment System DANA Dual Autoland Not Available D APSE Delayed Autopilot Servo Engaged DAR Digital Aids Recorder DAR Designated Airworthiness Representative DAS Directional Autopilot Servo DAS/STC Designated Alteration Station/ Supplemental Type Certificate DATR Digital Audio Tape Reproducer DAV Drift Angle Valid DB Decibel DB Data Base DBL Data Base Loader DBLR Doubler DBM Decibels (referenced to a milliwatt) DBT Design Build Team DC Direct Current DC Disposition Code DC Descent DC Diffuser Combustor DCAS Digital Controlled Audio System DCCS DC Current Sensors DCD Double Channel Duplex DCD Decode, Decoder DCDC Delayed Comparator DC DCDR Decoder DCGF Data Conversion Gateway Function DCIR DC Isolation Relay DCMF Data Communication Management Function DCMS Data Communication Management System DCN Drawing Change Notice DCNT Descent DCPC Digital Cabin Pressure Controller DCPCS Digital Cabin Pressure Control System DCPIU Direct Current Power Isolation Unit DCR Drawing Change Request DCS Double Channel Simplex DCS Designated Certification Specialist DCTU DC Tie Control Unit DCU Digital Computer Unit DCU Dimmer Control Unit DCU Data Control Unit DCV Directional Control Valve DCVR Direct Current Voltage Ratio DD Drift Down DD DME-DME D/D Engine Out Drift Down Point DDA Digital Differential Accumulation DDG Dispatch Deviation Guide DDI Design Drawing Instruction DDI Documentary Data Insert DDM Digital Data Module DDM Difference in Depth of Modulation DDPG Dispatch Deviations Procedures Guide DDRMI Digital Distance and Radio Magnetic Indicator D/DT Differential of D-Mux Demultiplexer DDU Deceleration Detector Unit D/E Decoder/Encoder DEC Decrease DEC Declination DEC Decimal DEC Decrement DECEL Deceleration, Decelerate DECIS Decision DECR Decrease DED Dedicated DED Dead Ended (shield) DEDP Data Entry and Display Panel DEF Definite, Definition DEFDARS Digital Expandable Flight Data Acquisition and Recording System DEFL Deflect, Deflection DEG Degrees DEG Degrade DEL Delete, Deleted DEL Delay Message DEL Diagram Equipment List DEL BY Deleted By DELE Delete DELTA P Differential Pressure DEM Demand DEMOD Demodulator DEMUX Demultiplexer DE-MUX Demultiplexer DEP Departure DEP Data Entry Panel DEP Data Entry Plug DEP Depressurize DEP ARR Departure/Arrival DEP/ARR Departure/Arrival DEPLD Deployed DEPR Depressurize DEPRESS Depressurization DEPT Departure DEPT Department DER Derating DER Designated Engineering Representative (FAA) DER I Derate 1 DER II Derate 2 DES Descent DEST Destination DESTN Destination DET Detent DET Detect, Detector, Detection DET Detached DET Detailed DETN Detection DETNT Detent DEU Display Electronics Unit DEU Densitometer Electronics Unit DEV Deviation DEVN Deviation DEX Access Demanded DF Direction Finder DF Default DFA Delayed Flaps Approach DFCS Digital Flight Control System DFDAC Digital Flight Data Acquisition Card DFDAF Digital Flight Data Acquisition Function DFDAMU Digital Flight Data Acquisition/ Management Unit DFDAU Digital Flight Data Acquisition Unit 12 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS DFDR Digital Flight Data Recorder DFFN Dribble Flow Fuel Nozzles DFGC Digital Flight Guidance Computer DFGCP Digital Flight Guidance Control Panel DFR Digital Flight Recorder DFR Defrosting DFRS Digital Flight Recorder System DFT Drift DFT Design Facility Tool DG Directional Gyro DG Dedicated Generator DGAC Direction Generale de L'Aviation Civile DGCU Dedicated Generator Control Unit DGTL Digital DH Decision Height DI Data Input DI De-icing DIA Diameter DIAG Diagonal DIAG Diagram DIAPH Diaphragm DIB Diiodobutane DID Design and Implementation Drawing DIFF Differential, Difference DIG Digital DIGT Digital DIM Dimension DIM Dimming, Dimmer DIP Dual Inline Package DIPLXR Diplexer DIR Direct, Director DIR Direction, Directional DIR INTC Direct Intercept DIR TO Direct To DIS Display DIS Distance DIS Disagreement DIS Discard DISAG Disagree DISC Disconnect, Disconnected DISCH Discharge, Discharged DISCONT Discontinued DISCR Discrete
DISCTN Disconnection DISENG Disengage DIS-IN Discrete Inputs DISP Dispatch DISPL Display DISPL Displacement DISRMD Disarmed DIST Distance DISTR Distribution DITS Digital Information Transfer System DIU Digital Interface Unit DIV Division DIV Diversion DJ Drill Jig DK Deck DL Data Link D&L Down and Locked DLA Delay DLC Direct Lift Control DLC ENG Direct Lift Control Engaged DLCNFF Direct Lift Control No First Fail DLCS Direct Lift Control Servo DLCV Direct Lift Control Validity DLD Dynamic Load Damper DLDR Data Loader DLGF Data Load Gateway Function DLODS Duct Leak and Overheat Detection System DLS Data Load System DLU Data Loader Unit DLW Design Landing Weight DLY Delay DMA Direct Memory Access DMB Dead Main Bus DMC Design Modification Committee DMC Direct Maintenance Costs DME Distance Measuring Equipment DMEP Data Management Entry Panel DMM Data Memory Module DMP Display Management Processor DMPR Damper DMR Dimmer DMS Debris Monitoring System DMU Data Management Unit DN Down DNA Does Not Apply DN/RT Down Right DNTK Downtrack DNTKFX Down Track Fix DO Data Output D&O Description and Operation DOC Direct Operating Cost DOC Document DOC.DATA Documentary Data DOT Differential Oil Temperature DOT Department of Transport DOW Dry Operating Weight DOZ Dozen DP Differential Protection DP Departure DP Differential Pressure DP Display Partition DPCT Differential Protection Current Transformer DPCU Digital Passenger Control Unit DPDT Double Pole Double Throw DPI Differential Pressure Indicator DPI Delta Pressure Indicator DPI Digital Performance Information DPL Detailed Parts List DPR Differential Protection Relay DPR Dual Pressure Rated DPRR Discretionary PRR DPST Double Pole Single Throw DPV Directional Pilot Valve DPV Dual Purpose Valve DR Door DR Dead Reckoning DR Drive DR Drain D/R Dead Reckoning DRAM Dynamic Random Access Memory DRATE Derate DRMI Distance Radio Magnetic Indicator DRS Doors DRT Derate DRVG Driving DRVN Driven DRVR Driver DRWY Doorway DS Destination DS Directionally Solified DS Discard DSA Detailing Sensor Assembly DSAP Disappearance 13 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS DSB Double Sideband DSBL Disable DSCD Descend DSCRM Discriminator DSCRT Discrete DSCRT IO Discrete Input/Output DSDU Data Signal Display Unit DSENG Disengage DSENGD Disengaged DSF Display System Function DSMS Design Success Measurement System DSNT Descent DSP Display Select Panel DSP Display DSP Digital Signal Processing DSPL Display DSPLY Display DSR Desired (altitude) DSRTK Desired Track Angle DSS Detailed System Specification DSWC Digital Stall Warning Computer DTB Dead Tie Bus DTD Dated DTD Document Type Definition DTF Design Facility Tool DTG Distance To Go DTK Desired Track (angle) DTM Display Transfer Module D-TO Derated Takeoff Limit DTR Damage Tolerance Rating DTS Dual Temperature Sensor DT SHIP Date Shipped (Sonic) DU Display Unit DUDB Display Unit Database DUM Dummy DUP Duplicate DV VOR/DME DVI Detail Visual Inspection DWG Drawing DWL Diagram Wire List DX Access Demanded DYB Dynamic Braking DYN Dynamic DYNM Dynamotor DYNMTC Dynamometric E East EA Each EACS Electronic Automatic Chart System EAD Engine and Alert Display EADB Enhanced Area Distribution Box EADI Electronic Attitude Director Indicator EAI Engine Anti-Ice, Engine Anti-Icing EAMR Engineering Advanced Material Release EAROM Electrically Alterable Read Only Memory EAS Equivalent Airspeed EAS Elevator Autopilot Servo EAT Expected Approach Time EAU Engine Accessory Unit EB Electron Beam EBCC ECS Bleed Configuration Card EBG Engine Build Group EBL Engine Buttock Line EBS Engine Bleed System EBS Engine Build Specification EBU Engine Build Up EC Engine Control E/C Economy Class ECAM Electronic Centralized Aircraft Monitoring ECB Electronic Control Box (APU) ECC Equipment Cooling Card ECC Eccentric ECCS Equipment Cooling Control System ECD Electrocardiogram ECD Estimated Completion Date ECM Engine Condition Monitoring ECM Electro-Chemical Machining ECM Electronic Countermeasures ECM Engineering Change Memo ECON Economy ECON Economic ECP ECAM Control Panel ECP Engineering Change Proposal ECR Engineering Change Request ECS Environmental Control System ECS Electronic Cooling System ECS Engine Control System ECSF Engine Control System Fault ECSL Left Environmental Control System card ECSMC Environmental Control Systems Miscellaneous Card ECSR Right Environmental Control System card ECU Electronic Control Unit (APU) ECU Engine Control Unit (G.E. engine) ECV Economy Cooling Valve ED End of Descent ED Edge Distance ED End of Display E/D End of Descent E*D End of Descent EDHP Engine-Driven Hydraulic Pump EDI Engine Data Interface EDIU Engine Data Interface Unit EDM Engine Data Multiplexer EDM Electric Discharge Machine EDM Electro-Discharge Machining EDMC Engineering Drawing Microfilm Card EDP Engine Driven Pump EDP Electronic Data Processing EDP Engine Display Panel EDPE Electronic Data Processing Equipment EDSD Electrostatic Discharge Sensitive Device EDTA Ethylenediamine Tetraacetate E/E Electrical/Electronics 14 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS E/E Electronic Equipment E & E Electronic Equipment EEBD Emergency Escape Breathing Device EEC Electronic Engine Control EEC Electronic Engine Controller EEC Electronic Equipment Compartment EECM Electronic Engine Control Monitor EECS Electronic Engine Control System EEPROM Electrically Erasable Programmable Read-Only Memory EEROM Electrical Erasable Read Only Memory EF Existing Faults (CMC) EFAS Enroute Flight Advisory System EFC Elevator Feel Computer EFC Expected Further Clearance (time) EFCC Electronic Flight Control Computer EFCS Electronic Flight Control System EFCU Electronic Flight Control Unit EFCU Elevator Feel and Centering Unit EFDARS Expandable Flight Data Acquisition and Recording System EFDS Engine Fault Display System EFDU Engine Fault Display Unit EFF Effective, Effectivity EFF Efficiency EFI Electronic Flight Instrument EFIS Electronic Flight Instrument System EFIS CP EFIS Control Panel EFISSG EFIS Symbol Generator EFIS SGU EFIS Symbol Generator Unit EFSG EFIS Symbol Generator EG For Example EGA Extra Ground Attenuation EGT Exhaust Gas Temperature EGT Engine Gas Temperature EHF Extremely High Frequency EHM Engine Health Monitoring EHS Extra High Shear EHSI Electronic Horizontal Situation Indicator EHSV Electro-Hydraulic Servo Valve EHV Electro-Hydraulic Valve EICAS Engine Indication & Crew Alerting System EICAS/CP EICAS Control Panel EIS Electronic Instrument System EIS Engine Instrument System EIS Engine Indicating System EISCP Electronic Instrument Control Panel EIU Engine Interface Unit EIU EFIS/EICAS Interface Unit
EL Elevation EL Equipment List EL Electroluminescent ELAPS Elapsed Time ELC Engine Limiter Control ELCCR Electrical Liaison Commitment Center Record ELCU Electrical Load Control Unit ELEC Electric, Electrical, Electricity ELEC Electronic ELECT Electric ELECT Electronic ELEK Electronic ELEKS Electronics ELEV Elevation ELEV Elevator ELEX Electronic ELFA Elevator Load Feel Actuator ELI Equipment List ELIM Eliminate ELMS Electrical Load Management System ELR Engineering Liaison Request ELS Electronic Library System ELT Emergency Locator Transmitter ELV Elevation ELV Elevator EMC Entertainment Multiplexer Controller EMC Executive Maintenance and Materiel Council EMDP Electric Motor Driven Pump EMER Emergency EMERG Emergency EMF Electromotive Force EMHP Electric Motor-Driven Hydraulic Pump EMI Electro-Magnetic Interference EMMU Engine Monitoring Multiplex Unit EMP Electric Motor Pump EMP Empennage EMP Electromagnetic Pulse EMP Engine Management Program EMR Electromagnetic Riveting EMS Electronic Mail System EMU Engine Maintenance Unit EMU Event Monitoring Unit EMU Engine Module Unit EN Enable ENBL Enable ENCD Encode ENCDR Encoder ENCL Enclosure END Endurance ENDUR Endurance ENG Engine ENG Engage ENGA Engage ENGD Engaged ENG EXCD Engine Exceedance ENG LIM Engine Limit ENG OUT Engine Out ENGR Engineer ENGRG Engineering ENGS Engines ENG VIB Engine Vibration ENP Estimated Normal Payload ENRGZ Energize ENT Entertainment ENT Entry, Entrance ENTMT Entertainment ENTR Entrance ENT T/R Entertainment Tape Reproducer ENV Envelope ENWY Entryway EO Engine Out EO Engineering Order E/O Engine Out EOAP Electronic Overhead Annunciator Panel EOEW Equivalent Operating Empty Weight EOI Engineering Operating Instruction EOP End Of Part EOSID Engine Out Standard Instrument Departure EOT End Of Tape EP Entry Panel EP External Power EPA Emergency Power Assist EPA Environmental Protection Agency EPC External Power Contactor EPC Electrical Power Center EPCU Electrical Power Control Unit EPCR External Power Control Relay 15 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS EPCS Electronic Propulsion Control System EPESC Enhanced Passenger Entertainment System Controller EPFP External Power Fault Protection EPGS Electrical Power Generating System EPP EEC Programming Plug EPR Engine Pressure Ratio EPR Exhaust Pressure Ratio EPR Ethylene Propylene Rubber EPR.D EPR Descent EPRL Engine Pressure Ratio Limit EPR.L EPR Latch EPROM Electrically Programmable Read Only Memory EPROM Erasable Programmable Read Only Memory EPU Emergency Power Unit EQ Equipment EQA Equipment Quality Analysis EQA Engineering Quality Analysis EQL Equalizer EQPMT Equipment EQPT Equipment EQUAL Equalization Signal EQUIP Equipment EQUIV Equivalent ER Extended Range ER Elevator Rib ER Enroute Cruise ERD Excessive Rate Detector ERECT Erection ERF Exceedance RAM Full ERI Extended Repeat Interval EROPS Extended Range Operations ERP Eye Reference Point ERP Effective Radiated Power ERR Error ERS Erase, Erased ERU Engine Relay Unit ES Engine Start ESC Entertainment/Service Controller ESC Entertainment System Controller ESC Escape ESC Engine Supervisory Controller ESC Environmental System Controller ESCC Electrical Supply and Control Center ESCV Eleventh Stage Cooling Valve ESD Electrostatic Discharge ESD Electronic System Display ESDS Electrostatic Discharge Sensitive ESFC Equivalent Specific Fuel Consumption ESHP Equivalent Shaft Horsepower ESI Engine Start Inhibit ESNTL Essential ESNP Engine Serial Number Plug ESP Emergency Spill Valve ESS Essential ESS Engine Start System EST Estimated ESTA Engine Station ESTS Electronic System Test Set ESU Electronic Sequence Unit ESU Electronic Switching Unit ET Elapsed Time ET Extended Trailing Edge E/T Electrical Trim ETA Estimated Time of Arrival ETC Electronic Turbine Control ETC Essential Tie Contactor ETC Electrical Temperature Control ETC Electronic Temperature Control ETD Estimated Time of Departure ETE Estimated Time Enroute ETI Elapse Time Indicator ETM Elapsed Time Meter ETO Estimated Time Over ETOPS Extended (range) Twin-engine Operations ETP Equal Time Point ETPU Engine Transient Pressure Unit ETPU Electrical Transient Pressure Unit ETS Equipment Technical Specification EU Excessive Update EV Electro Valve EV East Velocity EV Excessive Velocity EVAC Evacuation EVAL Evaluation EVAP Evaporate, Evaporator EVBC Engine Vane Bleed Control EVM Engine Vibration Monitor EVSC Engine Vibration Signal Conditioner EVSCU Enhanced Video System Control Unit EVT Event EWA Engineering Work Authorization EWL Engine Waterline EWS Electronic Warning System EX Exhaust EX Excitation EX Example EXC Excite, Excitation EXCD Exceedance, Exceedances EXCD Excited EXCESS Excessive EXCG Exciting EXCH Exchange EXCIT Excitation EXCN Excitation EXCT Excitation EXCTR Exciter EXEC Execute EXH Exhaust EXP Expand, Expanded, Expansion Expl. Explosive EXT External EXT Extend, Extended, Extension EXT Exterior, External EXTC Extract EXTCD Extracted EXTCG Extracting EXTEN Extension EXTG Extending EXTIG Extinguishing EXTIN Extinguish, Extinguished, Extinction EXTING Extinguishing, Extinguish EXTIR Extinguisher EXTN Extension EXTR Extrude, Extrusion EXTRACT Extraction EZ Electrical Zero 16 REV. OCT. 00 AIRCRAFT ABBREVIATIONS & ACRONYMS F Fahrenheit (degrees) F Force F Minimum Flap Retract Speed (EFIS) F Flare F Fire F Fuel F Farad f Function (of) FA Final Approach F/A Flight Attendant F/A Final Assembly FA Family (WDM) FAA Federal Aviation Administration FAB Fabricate, Fabrication FAC Flight Augmentation Computer FACIL Facility FACS Flight Augmentation Computer System FADEC Full Authority Digital Electronic Control FAEEC Full Authority Electronic Engine Control FAF Final Approach Fix FAFC Full Authority Fuel Control FAIL Failed, Failure FAIR Fairing FAMV Fan Air Modulating Valve FAOM Flight Attendant Operating Manual FAR Federal Airworthiness Regulation