Did you ever wonder what those strange conglomerations of letters meant? Here's your chance to find out what those NASA acronyms stand for. About Space and Astronomy presents the Guide to NASA Acronyms. This page lists acronyms starting with F. For others, click on the appropriate letter above or below.

[F]

F: Forward
F: Fahrenheit
F: Failure
F: Farad (SI Unit of Capacitance)
F: Female
F: Front
F LCA: Forward Load Control Assembly
F&E: Facility and Envii-onment
F/0: Fuel/Oxidizer Ratio
F/A: Failure Analysis
F/A: Fuel-Air
F/C: Fit Check
F/C: Flight Controller
F/C: Fuel Cells
F/D: Fill/Drain
F/E: Full/Empty
F/F: "Fill/Full, Full/Fill"
F/R: Flared Rudder
FA: Failure Analysis
FA: Final Approach
FA: Final Assembly
FA: Flight Aft
FA: Flight Critical Aft
FA: Fully Automatic
FA: Flight aft
FA/COSI: Final Assembly and Closeout System Installation
FAA: False Alarm Avoidance
FAA: Federal Aviation Administration
FAA: Federal Aviation Agency
FAB: "Fabricate, Fabrication"
FAC: Facility
FACI: First Article Configuration Inspection
FACO: Fabrication and Acceptance Checkout
FACO: Factory Acceptance Checkout
FACO: Factory Assembly and Checkout
FACO: Final Assembly Checkout
FACS: Facilities Control
FACS: Finance and Control System
FACT: Flexible Automatic Circuit Tester
FAD: Final Approach Display
FAF: First Aerodynamic Flight
FAIR: "Fabrication, Assenibly, and Inspection Record"
FAL: First Approach and Landing (Test)
FAM: Familiarization
FAMOS: Flight Acceleration Monitor Only System
FAO: Flight Activities Officer
FAP: Final Approach Plane
FAR: Failure Analysis Report
FAR: Federal Aviation Regulation
FAR: Final Acceptance Review
FAR: Flight Acceptance Review
FASCOS: Flight Acceleration Safety Cutoff System
FAT: Flight Attitude Table
FAWG: Flight Assignment Working Group
FAX: Facsimile Transmission
FB: Feedback
FB: Final Braking
FBAS: Fixed Base Aft Station
FBC: Fluidized-Bed Combustion
FBCS: Fixed Base Crew Station (SMS)
FBS: Firefighters Breathing System
FBV: Field Base Visit
FBV: Fuel Bleed Valve
FC: Fit Check
FC: Flight Computer
FC: Flight Control
FC: Flight Critical
FC: Fuel Cell
FC: Flight control
FC: Flight critical
FC: Fuel cell
FCA: Fluids Control Assembly
FCA: Frequency Control Analysis
FCA: Functional ComPatibility Analysis
FCA: Functional Configuration Audit
FCA: Forward controller assembly
FCAF: Flight Crew Accommodations Facility
FCAP: Flight Control Applications Program
FCC: Federal Communications Commission
FCC: Flat Conductor Cable
FCC: Flight Control Computer
FCC: Flight Crew Compartment
FCCP: Firm Contract Cost ProPosal
FCD: Flight Control Division (JSC)
FCDB: Flight Control Data Bus
FCE: Flight Control Equipment
FCE: Flight Crew Equipment
FCEF: Flight Crew Equipment Facility
FCEI: Facility Contractor End Item
FCF: First Captive Flight
FCF: Flight Critical Forward
FCF: Functional Check Flight
FCFM: Flight Combustion Facility Monitor
FCH: Flight Controllers Handbook
FCH L: Flight Control Hydraulics Laboratory
FCI: Flight Control Indicator
FCI: Functional Configuration Identification
FCIM: Flight Control Interface Module
FCIP: Flight Cargo Implementation Plan
FCIT: First Computer Interface Tester
FCL: Freon Coolant Loop
FCL: Freon Coolant Line
FCL: Freon coolant loop
FCMU: Foot Controlled Maneuvering Unit
FCN: Function
FCO: Final Checkout
FCO: Functional Checkout
FCOH: Flight Controllers Operational Handbook
FCOS: Flight Computer Operating System (Orbiter)
FCOS: Flight Control Operational Software
FCOS: Flight Control Operating System
FCOS: Flight control operational software
FCOS: Flight computer operating system
FCP: Firm Cost Proposal
FCP: Failure Correction Panel
FCP: Fuel Cell Power (Plant)
FCP: Flight Correction Proposal
FCP: Fuel cell power plant
FCPS: Fuel Cell Power System (Subsystem)
FCR: Final Configuration Review
FCR: Flight Configuration Review
FCR: Flight Control Room
FCR: Flight Control Room
FCRA: Fecal Collection Receptacle Assembly
FCRT: Flight Display CRT
FCS: Fecal Containment System
FCS: Flight Control System (Subsystem)
FCS: Flight Crew System
FCS: Federal Communications System
FCS: Flight control system
FCSM: Flight Combustion Stability Monitor
FCSS: Fuel Cell Servicing System
FCT: Flight Control Team
FCT: Fuel Cell Test
FCT: Flight Crew Trainer
FCTB: Flight Crew Training Building
FCTF: Fuel Cell Test Facility
FCTS: Flight Crew Trainer Simulator
FCU: Fluid Checkout Unit
FCW: Format Control Words
FD: Fault Detection
FD: Flight Day
FD: Flight Deck
FD: Flight Director
FD: Freeze Dried
FD: Feed
FD: FunCtion Designator
FD WMR: Food Warmer
FDA: Fault Detection and Annunciation
FDA: Flight Deck Assembly (FDF)
FDAI: Flight Director Attitude Indicator
FDB: Fahrenheit Dry Bulb
FDDB: Function Designator Data Base
FDF: Flight Data File
FDF: Flight data file
FDI: Fault Detection and Identification
FDI: Fault Detection and Isolation
FDI: Failure Detector Indicator
FDIIR: Recompensation
FDIIR: "FaLilt Detection, Isolation, Identification, and"
FDIR: Recovery/Recognition
FDIR: Fault Detection identification/Isolation and
FDL: Flight Director Loop
FDLN: Feedline
FDM: Flight Data Manager
FDM: Frequency Data Multiplexer
FDM: Frequency Division Multiplexing
FDM: Frequency division multiplexer
FDO: Flight Dynamics Officer
FDO: Fee Determination Official
FDOR: Flight Design Operations Review
FDR: Final Design Review
FDR: Flight Data Recorder
FDR: Functional Design Review
FDRI: Flight Director Rate Indicator
FDS: Flight Design System
FDS: Flight Dynamics Simulator
FDS: Flight Dynamics Software/System
FDS: Fluid Distribution System
FDS: Functional Design Specifications
FDS: Flight Design and Scheduling
FDSC: Flight Dynamics Situation Complex
FDSC: Flight Dynamics Simulation Complex
FDU: Fluid Distribution Unit
FDX: Full Duplex
FEA: Failure Effects Analysis
FEAT: Final Engineering Acceptance Test
FEB: Forward Equipment Bay
FEC: Field Engineering Change
FEC: Forward Events Controller
FED: Flight Events Demonstration
FEDP: Facility and Equipment Design Plan
FEID: Flight Equipment Interface Device
FEID: Functional Engineering Interface Device
FEM: Finite Element Method
FEMCPL: Facilities and Envir- Measurement Comp. Parts List
FEP: Floral Ethel Propane
FEP: Fluorinated Ethylene Propylene
FEP: Front End Processor
FERD: Facility and Equipment Requirements Document
FES: Flight Element Set
FES: Flash Evaporator System
FES: Flash evaporator system
FESL: Failure Effects Summary List
FET: Field Effect Transistor
FET: Flight Elapsed Time
FEWG: Flight Evaluation Working Group
FF: Flip Flop
FF: Free Flight
FF: Flight Forward
FF: Flight forward
FFBD: Functional Flow Block Diagram
FFC: Final Flight Certification
FFD: Fixed Format Display
FFD: Functional Flow Diagram
FFM: Free-Flying (Experiment) Module
FFP: Firmed Fixed Price
FFTO: Free-Flying Teleoperator
FH: Flex Hose
FHC: Flight Half Coupling
FHD: Fixed Head Disk
FHF: First Horizontal Flight
FHO: Failed Handover
FHP: Fuel High Pressure
FHS: Forward Heat Shield
FI: Flight Instrumentation
FI: Formal Inspection
FIAR: Failure Investigation Action Report
FID: Failure Identification
FID: Flight Implementation Directive
FIDO: Flight Dynamics Officer
FIE: Flight Instrumentation Engineer
FIFO: First in-First out (High Speed Data Buffers)
FIG: Figure
FIIG: Federal Item Identification Guide
FIL: Filament
FILE: Future Identification and Location Experiment
FIO: Furnished and installed by Others
FIR: Fuel Indicating Reading
FIS: Facility Interface Sheets
FIT: Fault Isolation Test
FITH: Fire-in-the-Hole
FIV: Fuel Isolation Valve
FKB: Flight Display Keyboard
FL: Fail
FL: Feed Lines
FL: Flowline
FL: Forward link
FL MECH: Fluid Mechanical
FLAP: Flight Application Software
FLC: Federal Library Committee
FLC: Forward Load Control
FLCA: Forward load controller assembly
FLD: Field
FLEX: Flexible
FLG: Flag
FLG: Flange
FLLK: Frustum Lifting Lug Kit
FLN: Fuel Line
FLOT: Flotation
FLP: Flap
FLPS: Flight Load Preparation System
FLR: Flare
FLR: Failure
FLS: Flight Surgeon
FLSC: Flexible Linear Shaped Charge
FLT: Flight
FLT: Floating
FLTR: Filter
FLTSATCOM: Fleet Satellite Communications
FLUOR: Fluorescent
FLW: Fellows (TACAN Station)
FM: Frequency Modulation (Modulated)
FM: Flight Model
FM: "Frequency modulation, frequency modulated"
FM/FM: Frequency Modulation/Frequency Multiplexing
FM/PM: Frequency Modulation/Phase Modulation
FMA: Failure Mode Analysis
FMAHTS: Flight Manifest and Hardware Tracking System
FMANTS: Flight Manifest
FMC: Food Machinery Corporation
FMCF: First Manned Captive Flight
FMDM: Flex Multiplexer/Demultiplexer
FMEA: Failure Modes and Effects Analysis
FMEC: Forward Master Events Controller
FMECA: "Failure Mode, Effects, and Criticality Analysis"
FML: Fault Message Line
FML: Final Materials List
FMO: Flight Medical Officer
FMOF: First Manned Orbital Flight
FMOFEV: First Manned Orbital Flight with EVA
FMOFPL: First Manned Orbital Flight with Payload
FMR: Field Modification Request
FMR: Function Max Rate
FMS: Food Management System (Subsystem)
FMSP: Frequency Modulation Signal Processor
FMSP: FM signal processor
FMT: Flight Management Team
FMX: FM Transmitter
FND: Facility Need Date
FNL: Final
FNT: Failure Notification Telex
FO: Objective
FO: Fail Operational
FO: Fiber Optics
FO/FS: Fail-Operational/Fail-Safe
FOB: Flight Operations Building
FOB: Free on Board
FOC: Focus
FOC: Full Operational Capability
FOD: Flight Operations Directorate (JSC)
FOE: Flight Operations Engineer
FOF: First Orbital Flight
FOF: First Operational Flight
FOF: Flight Operations Facilities
FOIH: Flight Operations Integration Handbook
FOM R: Flight Operations management Room
FOP: Flight Operations Plan
FOP: Flight Operations Panel
FOP: Follow on Production
FOPG: Flight Operations Planning Group
FOPP: Follow on Parts Production
FOPS: Flight Operations Planning Schedule
FOR: Flight Operations Review
FOR: Force
FORTRAN: Formula Translation
FOS: Flight Operations Support
FOSDIC: Film Optical Sensing Device for Input to Computers
FOSO: Flight Operations Scheduling Officer
FOSP: Flight Operations Support Personnel
FOST: Flight Operations SUPPOrt Team
FOT: Flight Operations Team
FOV: First Orbital Vehicle
FOV: Field of View (Vision)
FP: Fuel Pressure
FP: Function Path
FP: Fine Pointing
FP: Fixed Point
FP: Flight Plan
FP: Freezing Point
FPB: Fuel Preburner
FPBOV: Fuel Preburner and Oxidizer Valve
FPC: Forward Power Controller
FPC: Fluids Pressure Control
FPCA: Forward Power Control Assembly
FPCA: Forward power controller assembly
FPE: Functional Program Element
FPEG: Fast Pulse Electron Gun
FPHB: Flight Procedures Handbook
FPIF: Fixed Price Incentive Fee
FPL: Full Power Level
FPL: Full Power Load
FPM: Folding Platform Mechanism
FPM: Feet per Minute
FPOV: Fuel Preburner Oxidizer Valve
FPP: Freon Pump Package
FPPR: Fixed Price with Price Revision
FPR: Flight Performance Reserve
FPS: Feet per Second
FPS2: Feet per second squared
FPS: Flight per Second
FPS: Forward Power Supply
FPS: Frames Per Second
FPU: Floating Point Unit
FPV: Flow Proportioning Valve
FQ: Flight Qualification
FQI: Flight Qualification Instrumentation
FQR: Flight Qualification Review
FQR: Flight Qualification Recorder
FQT: Formal Qualification Test
FR: Flight Rule
FR: Firing Room
FR: Frame
FRAGNET: Fragmented Network
FRB: Failure Review Board
FRC: "Flight Research Center, California"
FRCI: Fibrous refractory composite insulation
FRCS: Forward Reaction Control System (Subsystem)
FRCS: Forward reaction control system
FRD: Flight Requirements Document
FRE: Flight Related Element
FRE: Format Request Element
FREO DIV: FrequencY Divider
FREQ: Frequency
FREQ CONV: Frequency Converter
FRF: Flight Readiness Firing
FRFT: Flight Readiness Firing Test
FRJD: Forward Reaction Jet Driver
FRL: Fuselage Reference Line
FRL: Frame Reference Line
FRMT: Format
FRP: Fuselage Reference Plane
FRR: Flight Readiness Review
FRRID: Flight Readiness Review Item DescriPtion
FRRID: Flight Readiness Review Item DisPosition
FRSI: Felt Reusable Surface Insulation
FRSI: Flexible reusable surface insulation
FRT: FrequencY ResponseTest
FRT: Flight Readiness Test
FRT: Flight Readiness Training
FRZR: Freezer
FS: Functional Schematic
FS: Freon Servicer
FS: Fail-Safe
FS: Flight System
FS: Fault Summary
FS: Federal Specification
FS: Fire Suppression
FS: Fail to Sync
FS: Full Scale
FS: Fuselage Station
FSAA: Flight Simulator for Advanced Aircraft
FSC: Federal Stock Classification
FSCM: Federal Supply Code for Manufacturers
FSCP: Fire Sensor Control Panel
FSD: Flight Simulation Division (JSC)
FSD: Full Scale Development
FSE: Flight Simulation Engineer
FSF: First Static Firing
FSGS: Flare/Shallow Glide Slope
FSI: Final Systems installation
FSIM: Functional Simulator
FSIWG: Flight System Interface Working Group
FSK: Frequency Shift Keyed (Keying)
FSL: Flight Systems Laboratory
FSL: Flight Simulation Laboratory
FSLO: First Spacelab Payload
FSLT: First Sea Level Test
FSM: Fuel Supply Module
FSN: Federal Stock Number
FSO: Functional Supplementary Objective
FSOH: Flight Support Operations Handbook
FSP: Fault Summary Page
FSR: Final System Release
FSR: Flight Specific Requirements
FSRR: Flight System Readiness Review
FSRR: Flight Software Readiness Review
FSRS: Flight System Recording System
FSS: Field Spectrometer System
FSS: Flight Systems Simulator
FSS: Flight Support System
FSS: Fire Suppression System
FSS: Fixed Service Structure
FSS: Flight Support Station (for MMU)
FSS: Flight Support Structure
FSS: Fixed service structure
FSSR: Functional Subsystem Software Requirements
FSSR: Flight Systems Software Requirements
FSTE: Factory Special Test Equipment
FSU: Freon Servicing Unit
FSW: Flight Software
FT: Feet
FT: Flight Team
FT: Flight Test
FT: Formal Training
FT: Functional Test
FT/SEC: Feet per Second
FT&C: Formal Training and Certification
FTA: Flight Test Article
FTA: Fault Tree Analysis
FTA: Fatigue Test Article
FTC: Flight Test Conductor
FTC: Florida Test Center (MDAC)
FTE: Factory Test EquiPment
FTE: Flight Test Engineer
FTE: Forced Test End
FTIS: Flight Test Instrumentation System
FTO: Functional Test Objective
FTO: Flight Test Objective
FTOH: Flight Test Operations Handbook
FTOH: Flight Team Operations Handbook
FTP: Flight Test Procedure
FTP: Functional Test Program
FTP: Function Test Progress
FTP: Full Throttle Position
FTR: Functional Test Requirement
FTR: Flight Test Requirement
FTRD: Functional Test Requirements Document
FTRD: Flight Test Requirements Document
FTS: Federal Telecommunications System
FTS: Flight Test Station
FTS: Flight Test System
FTS: Functional Test Specifications
FU: Flight Unit
FU: Fuel
FUB: Forward Utility Bridge
FUD: First Use Date
FUNC: Function
FUNCT: Functional
FUO: Follow-up Output
FUS: Fuselage
FUS/LF: "Fuselage, Lower Forward"
FUS/UF: "Fuselage, Upper Forward"
FUSLG: Fuselage
FV: Front View
FV: FlighL Version
FVF: First Vertical Flight
FVMS: Fluid Volume Measurement System
FVV: Facility Verification Vehicle
FW: Flag Word
FW: Fuel Wasting
FWB: Fahrenheit Wet Bulb
FWD: Forward
FWD HT SHLD: Forward Heat Shield
FWG: Facility Working Group
FWW: "Food, Water, and Waste"
FWWM: "Food, Water, and Waste Management"
FWWMS: "Food, Water, and Waste Management System (Subsystem)"
FXD: Fixed
FY: Fiscal Year
Fl: Fault Identification

For more NASA acronyms, select a letter below or at the top of the page to continue with the About Astronomy and Space Guide to NASA Acronyms.