A
A
Amber
A&P
Airframes and Power plants
A/T
Auto throttle
AAA
Amended meteorological message
AACD
Aging Airplane Corrosion Prevention and Control Document
AACP
Aging Airplane Corrosion Prevention and Control Program
AAD
Assigned altitude deviation
AAR
Authorized Airworthiness Representative
AASV
Autonomous Air Supply Valve
AATF
Airworthiness Assurance Working Group(AAWG)
ABV
Above
AC
Alternating Current
AC/ac
Advisory Circular/Air Conditioning
ACARS
Aircraft Communication Addressing and Reporting System
ACAS
Airborne Collision Avoidance System
ACC
Area control center
ACCY
Accessory
ACF
Acceptance Check Flight
ACFT
Aircraft
ACK
Acknowledge
ACMS
Aircraft Condition Monitoring System
ACN
Advance Change Notice
ACO
Aircraft Certification Office
ACR
Allowance Change Request
ACSS
Aviation Communication and Surveillance System
ACT
Active
AD
Airworthiness Directive
ADC
Air Data Computer
ADEPT
Airline Data Engine Performance Trend
ADF
Automatic Direction Finder
ADI
Automatic Direction Finder
ADIRS
Air Data and Inertial Reference System
ADIRU
Air Data Inertial Reference Unit
ADM
Administrative Data Management
ADR
Accidental Damage Rating
ADZ
Advice
AEEC
Airline Electronic Engineering Committee
AEG
Aircraft Evaluation Group
AFB
Air Force Base
AFCS
Automatic Flight Control System
AFDS
Automatic Flight Director System
AFM
Aircraft Flight Manual
AFS
Aging Fleet Survey
AGB
Accessory gear Box
AGL
Above Ground Level
AH
Alert Height
AHRS
Attitude Heading Reference System
AI
Anti Icing
AIA
Aerospace Industry Association of America
AIC
Aeronautical Information Circular
AIMS
Airplane Information Management System
AIP
Aeronautical Information Publication
AISI
American Iron and Steel Institute
AL
Annual Lubrication
AL
Aluminum
ALF
Aft Looking Forward
ALIM
Altitude Limit
AMJ
Advisory materials Joint (JAA advisory material)
AML
Airplane Modification Letter
AMM
Aircraft Maintenance Manual
AMOC
Alternate Method of Compliance
AMS
Aerospace Material Specification
AMSL
Above Mean Sea Level
ANP
Actual Navigation Performance
AOA
Angle of Attack
AOG
Aircraft On Ground
AOL
All Operator Letter
AOM
Aircraft Operational Manual
AOM
Aircraft Operating Manual
AOW
All Operators Wire
APL
Allowance Equipment List
APPROX
Approximately)
APU
Auxiliary Power Unit/airborne power unit
AR
As Removed
ARAC
Aviation rule-making Advisory Committee
ARC
Aviation Rule-making Committee
ARD
Aircraft Recovery Manual
ARINC
Aeronautical Radio Incorporated
ARP
Aero Recommended Practice
ASA
Auto land Status Annunciator
ASAP
As Soon as Possible/Aviation
ASB
Airplane Service Bulletin
ASCT
Airplane Specific Configuration Table
ASE
Altimetry system error
ASI
Aviation Safety Inspectors
ASR
Area Surveillance Radar
ASRS
Aviation Safety Reporting System
ASSY
Assembly
ASTM
American Society Testing Material
ATA
Air Transport Association
ATB
Air Turn Back
ATC
Air traffic control
ATCRBS
Air Traffic Control Radar Beacon System
ATM
Assumed Temperature Method
ATO
Aborted Takeoff
ATP
Accepted Test Procedures/Aircraft Technical Publication
ATPL
Air Transport Pilot License
ATPM
Airline technical Program Manager
ATS
Air turbine Starter/Auto-throttle System
ATS
Air traffic services
ATTN
Attention
AUX
Auxiliary
AVBL
Available
AVGAS
Aviation Gasoline
AVM
Airborne Vibration Monitoring
AVN
Avionics
AWL
Airworthiness Limitations
AY
Assembly (ASSY)
AZM
Azimuth
B
B STA
Body Fuselage Station
B.E.R
Beyond Economical Overhaul
BAC
Boeing Aircraft Corporation
BAS
Boeing Airplane Service
BAT
Battery
BBJ
Boeing Business Jet
BBL
Body Buttock Line
BCA
Boeing Commercial Airplanes
BCAG
Boeing Commercial Airplanes Group
BCAS
Beacon Collision Avoidance System
BCF
Bromochlorodiflouromethane (Halon 1211 fire extinguisher)
BCN
Beacon
BCV
Bore Cooling Inspection
BDCO
BCA Delegated Compliance Organization ( Boeing )
BDTD
Boeing Digital technical data
BHD
Bulkhead
BITE
Built in test equipment
BK1
Timed backup file for document window 1
BL
Buttock Line
BLW
Below
BMS
Boeing Material Specification
BMT
Boeing Material Technology
BOM
Bill Of Material
BPN
Boeing Partners Network
BRP
Body Reference Plane
BSI
Boroscope Inspection
BSOPM
Boeing Standard Overhaul Practices Manual
BSV
Burner Staging Valve
BTN
Between
BUCCS
Boeing Classification Code System
BUN Num
Also known as Variable Number
BWL
Body Water line
BYP
BY-Pass
C
C
Centigrade
C&A
Control and Accessories
C/L
Center Line
C/M
Condition Monitoring
C/S
Center Section
CAA
Civil Aviation Authority
CAAM
Continued Airworthiness Assessment Methodology
CAD
Cadmium
CAD
Comité Analisis Defecto (ENAER HDO)
CAR
Corrective Action Request(FAA)
CAS
Collision Avoidance System
CASS
Continuous Analysis and Surveillance System (FAA)
CATIA
Computer Aided Three-Dimensional Interactive Application
CBP
Compressor Bleed Control
CBT
Computer Basic Training
CCA
Compliment con anterioridad
CCCV
Core Compartment Cooling Valve
CCDL
Cross Channel Data Link
CCV
Core Cooling Valve
CCW
Counterclockwise
CDCCL
Critical Design Configuration Control Limitation
CDG
Configuration Deviation List
CDN
Combustion Discharge Nozzle or Combustor ,diffuser, Nozzle
CDP
Compressor Discharge Valve
CDR
Customer Departure Record
CD-ROM
Compact Disk-Read Only Memory
CDU
Control and Display Unit
CECOMA
Centro Coordinacion de Mantenimiento (Enaer )
CESM
Commercial Engine Service Memorandum
CFL
Cleared flight level
CFM
Commercial Fan Motor
CFMI
Commercial Fan Motor International
CFR
Code Federal Regulation
CG
Center of Gravity
CGA
Compress Gas Association
CH
Channel
CHAM
Chamfer
CHGD
Changed
CIC
Corrosion Inhibiting Compound
CIP
Compressor Inlet Pressure
CIT
Compressor Inlet Temperature
CLM
Cargo Loading Manual
CMA
Central monitoring agency
CMA
Centro Mantenimiento Aeronautico
CMB
Climb
CMCF
Central Maintenance Computer Function
CMM
Component Maintenance Manual
CMP
Configuration Maintenance Program ( Boeing D-38123 )
CMR
Certification Maintenance Requirement
CMS
Cabin Management System
COC
Customer Originated Change
CODEP
Common Disposition
COMBI
Combined main deck passenger/cargo aircraft
COMM
Communication
CONT
Continued
CP
Corrosion Program
CPA
Closest Point of Approach
CPCP
Corrosion Prevention and Control Program
CPM
Corrosion Prevention Manual
CPU
Central Processing Unit /Control Power Unit
CR
Complete Revision
CRES
Corrosion-Resistant Steel
CRF
Compressor Rear Frame
CRI
Cross Reference Index
CRM
Collision Risk model
CRS
Course
CRT
Complete Revision Telex
CRZ
Cruise
CSB
Component Service Bulletin
CSC
Customer Support Manager
CSD
Constant Speed Drive
CSI
Cycles Since Installation
CSK
Countersink
CSLSV
Cycles Since Last Shop Visit
CSM
Customer Support Manager
CSN
Catalogue Sequence Number
CSN
Cycles Since New
CTEC
Customer Technical Education Center
CTN
Caution
CTR
Center
CUM
Cumulative
CVR
Cockpit Voice Recorder
CW
Completed with
CW
Clockwise
CWP
Completed With Partially
D
D&C
Delay and Cancellation
DAC
Double Annular Combustor/Division Aviones Comerciales
DAH
Design Approval Holders
DC
Direct Current
DCPCS
Digital Cabin Pressure Control System
DCT
Direct
DDPG
Dispatch Deviation Procedure Guide
DECR
Decrease
DEP
Departure or Depart
DER
Designated Engineering Representative
DEV
Deviation
DFRD
Digital Flight Data Recorder
DGAC
Direccion de Aeronautica Civil
DH
Decision Height
DI
Departamento de Ingenieria (ENAER )
DIA
Diameter
DIRRECT
Digital Information Repository for Release Exchange Control and Control
DISPL
Display
DIST
Distance
DIU
Digital Interface Unit
DME
Distance Measuring Equipment
DMMTL
Dynamic Minimum Triggering Level
DMOD
Distance Modification
DMS
Debris Monitoring System
DOA
Design Organization Approval ( EASA )
DOD
Domestic Object Damage
DOM
Date of Manufacture
DOT
Department of Transportation
DP
Dew Point
DPA
Digital Pre-Assembly
DPM
Digital Processor Unit
DPV
Directional Pilot Valve
DR
Departure Record
DSD
Drafting Standard Departure
DSFF
Downstream Fuel Filter
DTA
Digital Training Aid
DTE
Damage Tolerance Evaluation ( BOEING )
DTE
Damage Tolerance Inspection
DTR
Damage Tolerance Report ( SID MPD BOEING )
DWG
Drawing
E
EADI
Electronic Attitude Director Indicator
EASA
European Aviation Safety Agency
EAT
Estimated Arrival Time
EATCHIP
European Air Traffic Control Harmonization and Integration Program
EAU
Engine accessory Unit (B737 )
EB
Electron Beam
EBACE
European Business Aircraft Convention and Exhibition
EBU
Engine Buildup Unit
ECAM
Electronic Centralized Aircraft Monitoring
ECI
Eddy Current Inspection
ECS
Environmental Control System
ECU
Electronic Control Unit
EDC
Engine Data Change
EDP
Engine Driven Pump
EDR
Environmental Deterioration Rating
EDS
Engine Data Submittal
EEC
Electronic Engine Control
E-ETOPS
Early ETOPS
EFB
Electronic Flight Bag
EFC
Engine Flight Cycles
EFF
Effective
EFH
Engine Flight hours
EFIS
Electronic Flight Instrument System
EGH
Engine Ground Handling
EGT
Exhaust Gas Temperature
EHSI
Electronic Horizontal Situation Indicator
EIA
Electronic Industries AssociationÂ
EICAS
Engine Indication and Crew Alerting System
EIPC
Engine Illustrated Parts Catalogue
EIS
Entry Into Service also Electronic Instrument System
EIU
Engine Interface Unit
EIVMU
Engine Interface and Vibration Monitoring Unit
ELT
Emergency Locator Transmitter
EM
Engine Manual
EMC
Electronic Compability
EMCD
Electronic Magnetic Chip Detector
EMI
Electromagnetic Interference
EMMC
Engineering Maintenance and Material Committee(ATA)
EMOD
Electronic Maintenance and Operational Data
ENRT
Enroute
ERI
Extended Repair Interval
EROM
Electronic Readout Machine
ERP
Enterprise Resource Management
ESM
Engine Shop Manual
ESN
Engine Serial Number
ETC
Electronic Control Temperature (APU GTC985-98)
ETOPS
Extended Range Twin-Engine Aircraft Operations
EVAL
Evaluation
EWIS
Electrical Wiring Interconnection System
EX
Exchange
EXC
Except
EXER
Exercise
EXTD
Extended
EZAP
Enhanced Zonal Analysis Procedure
F
F/D
Flight Director
F/F
Fuel Flow
F/S
Front Spar
FAA
Federal Administration Agency
FADEC
Full Authority Digital Electronic Control
FAQ
Frequent Ask Question
FAR
Federal Aviation Regulation
FBO
Fixed Base Operator
FBW
Fly BY Wired
FC
Flight Cycles
FCBS
Fatigue Critical Baseline Elements
FCOM
Flight Crew Operational Manual
FCS
Fatigue Critical Structure
FCTM
Flight Crew Training Manual (Boeing 737 )
FD
Fatigue Damage
FDIMU
Flight Data Interface
FDP
Maintenance Facility and Equipment Planning
FDR
Flight Data Register
FDU
Fire Detection Unit
FEC
Failure Effect Category (SFAR 88 )
FEM
Finite Element Model
FFCCV
Fan Frame Compressor Case Vertical
FH
Flight Hours
FIM
Fault Isolation Manual
FINS
Forward Inner Nozzle Support
FIR
Full Indicating Reading
FISR
Fleet Issues Summary Report
FIT
Fan Inlet Temperature
FLA
Forward Locking Aft
FLD
Field
FLG
Flashing/Flag
FLT
Flight
FLUC
Fluctuant
FLW
Follow/Following
FMC
Flight Manager Computer
FMS
Flight Manager System
FMU
Fuel Metering Unit
FMV
Fuel Metering Valve
FN
Net Thrust
FNA
Final Approach
FOD
Foreign Object Damage
FPI
Fluorescent Penetrant Inspection
FQIS
Fuel Quantity Indicating System
FQPU
Fuel Quantity Processor Unit
FR
Fuel Remaining
FREQ
Frequency
FRM
Fault Report Manual
FRM
Formulario Requerimiento de Materiales
FRSM
Fan Reverser Penetrant Inspection
FRUIT
False Replies From Unsynchronized Interrogator
FRV
Fuel Return Valve
FSCM
Federal Supply Code for Manufacture
FSE
Field Service Engineer
FSEU
Flap/slat electronic unit
FSN
Factory Serial Number
FSO
Flight Standard Office
FTE
Flight Technical Error
FTG
Fitting
FTS
Flight Technical Service
FTS
Fuel Tank Safety
FWD
Forward
G
Gravity
GA
General Aviation
GA
Go Ahead
GAT
General air traffic
GAT
General Aviation
GB
Gigabyte ( 1 billon bytes )
GCA
Ground Controlled Approach
GE
General Electric
GEAE
General Electric Aircraft Engines
GEN
Generator
GFI
Ground Fault Interrupters
GFT
General Flight Test
GGT
General Gas Turbine
GI
Ground Idle
GM
Guidance Manual
GMS
GPS based monitoring system
GMU
GPS based monitoring unit
GND
Ground
GNDCK
Ground Check
GNS
Global Navigation System
GNSS
Global Navigation Satellite System
GPH
Gallons per Hours
GPM
Gallons per Minutes
GPS
Global Positioning System
GPWS
Ground Proximity Warning System
GR
Hail
GRD
Ground
GROM
Grommet
GRVL
Gravel
GS
Glide Slope
GS
Groundspeed
GSE
Ground Support Equipment
GSEM
Ground Support Equipment Manual
GTC
Gas Turbine Compressor
GVI
General Visual Inspection
H
HBAW
Handbook Bulletin for airworthiness, Flight standards
HBC
Hawker Beechcraft Corporation
HC
Hydro-Carbons
HCF
High Cycles Fatigue
HCU
Hydraulic Control Unit (Thrust Reverser )
HDG
Heading
HDO
Hoja Defecto Observado (ENAER)
HEPA
High-Efficiency Particulate Air (filter).
HF
High Frequency(3000 to 30,000 KHz)
HL
Hi lock(fastener)
HL
Hold Item Listing
HLDG
Holding
HMD
Horizontal Miss Distance
HMU
Height Monitoring Unit
HMU
Hydro mechanical unit
HP
High Pressure
HP
Horse Power
HPA
HectoPascal
HPC
High Pressure Compressor
HPCR
High Pressure Compressor Rotor
HPRV
High Pressure Regulating Valve
HPSOV
High Pressure Shut off Valve
HPT
High Pressure Turbine
HPTACC
High Pressure Turbine Active Clearance Control
HPTN
High Pressure Turbine Nozzle
HPTR
High Pressure Turbine Rotor
HPTS
High Pressure Turbine Stator
HPTSS
High Pressure Turbine Shroud Support
HRS
Hours
HSI
Horizontal Situation Indicator
HSI
Hot Section Inspection
HSN
Hours Since New
HSPR
Hours Since Performance Restoration
HSSV
Hours Since Visit Shop
HT
Hard Time
HT TR
Heat-Treat
HTS
High Thermal Stability
HTTP
Hyper text Transfer Protocol
HUD
Head Up Display
HVOF
High Velocity Oxygen Fuel
HVY
Heavy
HYD
Hydraulic
HZ
Hertz
I
IA
Inspection Authorization
IAC
Inspection Approach Chart
IAF
Initial Approach Fix
IAF
Israel Air Force
IAI
Israel Aerospace Industry
IAL
Instrument Approach and Landing
IAO
In and out Clouds
IAR
Intersection Air Routes
IAS
Indicated Air Speed
IATA
International Air Transport Association
IAW
In According With
IAWP
Initial Approach Way-Point
IBM
Identification Beam
IBM
International Business Machines
IC
Ice Crystal
ICA
Instructions for Continued Airworthiness (MRO/FAA )
ICAO
International Civil Aviation Organization
ICE
Icing-Ice
ID
Identifier,Identify,Identificating Document
ID
Inside Diameter
IDG
Integrated Drive Generator
IF
Intermediate Approach Fix
IF
Instrument Flight
IFF
Identification Friend/Foe
IFQT
Isolated fuel Quantity Transmitter
IFR
Instrument Flight Rules
IFR
Instrument Flight Rules
IFS
Inner Fixed Structure
IFSAU
Integrated Flight System Accessory Unit
IFSD
In Flight Shutdown
IGA
International General Aviation
IGA
Intergranular Oxidation
IGB
Inlet Gear Box
IGN
Ignition
IGV
Inlet Guide Vane
ILS
Instrument Landing System
IM
Inner Marker
IMC
Instrument Meteorological Condition
IMG
Immigration
IMI
Interrogation Sign
IMPR
Improvement, Improve
IMT
Immediate
INA
Initial Approach
INBD
Inbound
INC
Incorporated
INCERFA
Uncertainly Phase
INFO
Information
INMARSAT
International Maritime Satellite
INOP
Inoperative
INP
If not possible
INPR
In Progress
INS
Inertial Navigation System
INSTL
Installation, Install.
INSTR
Instrument
INTER
Intermittent
INTL
International
INTRG
Interrogator
IOE
Initial Operational Experience
IOF
Input/output Function
IP
Initial Provisioning
IP
Intellectual Property
IP
Internet Protocol
IP
Integrated Program
IPB
Illustrated Parts Breakdown
IPC
Illustrated Parts Catalogue
IPCV
Intermediate Pressure Check Valve
IPL
Illustrated Parts List
IR
Ice on Runway
ISA
International Standard Atmosphere
ISC
Industry Subcommittee or Steering Committee
ISFD
Integrated Standby Flight Display
ISIP
Integrated Structural Inspection Program
ISOL
Isolated
ITEL
Illustrated Tool and Equipment List
ITT
Interstage Turbine Temperature
IUA
Interactive User Access
IVSI
Instantaneous Vertical Speed Indicator
J
JAA
Joint Aviation Authority
JAR
Joint Aviation Requirements(JAA)
JAR
Joint Airworthiness Regulation
JATO
Jet Assist Take Off
J-BAR
Jet Barrier
JCAB
Japan Civil Aviation Bureau
JET-A
Commercial Jet fuel / Kerosene
JF
Saturday, Sunday ,Holiday
JO
Monday to Friday
JP
Jet propulsion
JP
Jet Propellant
JP1
Kerosene Military Specification
JTSO
Joint Technical Order
JTST
Jet Stream
JUL
July
JUN
June
K
KDR
Knowledge Deficiency Report
KG
Kilograms
KHZ
Kilohertz
KIAS
Knots Indicated Air Speed
KLM
Royal Dutch Airliners
KM
Kilometer
KMH
Kilometer per Hour
KPA
Kilopascals
KSI
Thousands of Pounds Per Square Inch
KT
Knots
KW
Kilowatts
L
LAA
Locking Actuator Assembly
LAV
Lavatory
LCD
Liquid crystal display
LCF
Low Cycle Fatigue
LE
Leading edge
LGTD
Lighted
LH
Left hand
LJ
Life Jacket
LLP
Life Limited Parts
LLTT
Lan Lufthansa Technical Trainer
LNDG
Landing
LOC
Localizer
LOPA
Layout Passenger Accommodations
LORAN
Low Frequency Hyperbolic Radio Long Range Navigation System
LOTC
Loss of thrust Control
LPC
Low Pressure Control
LPT
Low Pressure Turbine
LPTACC
Low Pressure Turbine Active Clearance Control
LPTR
Low Pressure Turbine Rotor
LPTS
Low Pressure Turbine Stator
LRU
Line Replaceable Unit
LTD
Limited
LVDT
Linear Variable Differential Transducer
LYR
Layer
M
M
Mach
M/S
Mid-Spar
MAC
Mean Aerodynamic Chord
MAG
Magnetic
MAP
Missed Approach Point
MASH
Mach/Airspeed Indicator
MASPS
Minimum Aircraft System Performance Specification
MAX
Maximum
Mayday
International radio distress call (from the French, m’aidez — help me). It signifies imminent danger ,
MB
Megabyte (1 million bytes; computing)
MC
Master Change
MCAI
Mandatory Continue Airworthiness Information
MCD
Magnetic Chip Detector
MCDU
Multipurpose Control and Display Unit
MCL
Maximum Climb
MCP
Mode Control Panel
MCPH
Maintenance Cost per Hour
MCRD
Master Cross Reference Database
MCRD
Maximum Cruise
MCT
Maximum Continuous Thrust
MDF
Miss Distance Filtering
MDR
Maintenance Deficiency Report
MEA
Minimum Enroute Altitude
MEC
Main Engine Control
MEL
Minimum Equipment List
MFA
Military Flying Area
MFC
Main Fuel Control
MFD
Multifunction Display
MFP
Main Fuel Pump / Maintenance Facility Planning
MGOS
Maintenance & Ground Operations Systems
MGOS
Maintenance and Ground Operations Support
MHz
Megahertz
MIM
Modification Inspeccion Mandatorias
MIN
Minimum
MLGWW
Main Landing Gear Wheel Well
MLS
Microwave Landing System.A microwave-based inst, approach syst, intended to repl, ILS in the 1990s
MM
Middle Marker
MMEL
Master Minimum Equipment List
MMO
Maximum Mach Operating Speed
MN
Mach Number
MNPS
Minimum Navigation Performance Specification
MOM
Multi Operator Message (Boeing)
MOPS
Minimum Operational Performance Standards
MORA
Minimum Off Route Altitude
MPD
Maintenance planning Data
MPM
Maintenance Review Board (Report)
MPS
Maintenance Programs Subcommittee
MRB
Maintenance Review Board
MRBPB
Maintenance Review Board Policy Board
MRM
Maintenance Review Manual
MRO
Maintenance Repair Organization
MRO
Maintenance Repair & Overhaul
MSA
Minimum sector altitude or minimum safe altitude
MSD
Multiple Site Damage
MSG
Maintenance Steering group
MSL
Mean Sea Level
MT
Maintenance Tip
MTBF
Mean Time Between Failure
MTBO
Maximum Time Between Overhaul
MTBR
Mean Time Between Removal
MTBUR
Mean Time Between Unscheduled Removal
MTL
Minimum Triggering Level
N
N/A
Not Applicable
N1
Low Pressure Rotor ( Fan)
N1K
Corrected Fan Speed
N2
High Pressure Rotor ( Core )
N2K
Corrected Core Speed
NAC
Nacelle
NAC BL
Nacelle Buttock Line
NAC STA
Nacelle Station
NAC WL
Nacelle Water Line
NAS
National Airspace System
NAS
Navy Army Standard
NAT
North Atlantic
NAV
Navigation
NBAA
National Business Aircraft Association
NBAA
National business Aviation Association
NCATT
National Center of Aerospace and Transportation
NCR
Non Conformity Record (FAA)
ND
Navigation Display
NDB
Non Directional Beacon
NDI
Non-Destructive Inspection
NDT
Non Destructive Test
NEG
Negative
NG
737 Next Generation (i.e., 737-600, -700, -800 and -900)
NGV
Nozzle Guide Vane
NLG
Nose Landing Gear
NLGWW
Nose Landing Gear Wheel Well
NLR
Corrected Fan(N 1 ) Speed (Speed Low Pressure Differential)
NM
Nautical Mile
NMAC
Near-Midair Collision
NNC
Non Normal Check
NNM
Non Normal Maneuver
NOTAM
Notice to Airmen
NPRM
Notice of Proposal Rule Making
NPS
Navigation Performance Scales
NSC
Notice of Status Change, also known as Information Notice
NSN
National Stock Number
NTO
No Technical Objection
NTSB
National Transport Safety Board
NVM
Non Volatile Memory
O
O/C
On-Condition
OAT
Outside Air Temperature
OBV
Operability Bleed Valve
OD
Outside Diameter
OEBS
Onboard Engine Balancing System
OEM
Original Equipment Manufacturer
OGV
Outlet Guide Vane
OHM
Overhaul Manual
OM
Outside Marker
OP/C
Operational Check
OPP
Opposite
OPS
Operations
OPSOV
Over Pressure Shut Off Valve
OPTL
Optional
OSHA
Occupational Safety and Health Administration
OVHT
Overheat
OVSP
Overspeed
OXY
Oxygen
OZ
Ounce
P
P6-pb
CIT Signal Pressure Differential
P7-pb
FIT Signal Pressure Differential
PANS
Procedure for Air Navigation
PAR
Paragraph
PART
Part Analysis & Requirement Tracking
PAX
Passenger
PB
Bypass Pressure
PC
Personal Computer
PC
Regulated Servo Pressure
Pc
Regulated Servo Pressure
PCA
Parts Condition Assessment
PCR
Case Regulated Pressure
PCR
Publication Charge Request
PCU
Power Control Unit
Portable Document Format
PDL
Portable Data Loader
PDM
Pneumatic Drive Motor
PDM
Planning Data Maintenance
PEAT
Procedural Event Analysis Tool
PEO
Pressure Engine Oil
PER
Performance
PERM
Permanent
PF
High Pressure Heated Fuel
PF
Pilot Flying
PFD
Primary Flight Display
PFR
Post Flight Report
PH
Precipitation Hardening
PH
Prueba Hidrostatica
PI
Performance In-flight
PIP
Product Improvement Package
PLA
Power Lever Angle
PLI
Pitch Limit Indicator
PM
Pilot Monitoring
PMA
Permanent Magnet Alternator
PMA
Professional Mechanic Association
PMA
Portable Maintenance Aid
PMC
Power Management Control
PMI
Principal Maintenance Inspector
PMUX
Propulsion Multiplexer
PN
Part Number
PNEU
Pneumatic
PNL
Panel
PO
Ambient Static Pressure
PPBU
Power Plant Buildup
PR
Partial Revision
PRESS
Pression
PREV
Previous
PRF
Military Performance Specification ( MIL-PRF )
PRKG
Parking
PRR
Production Revision Record
PRSOV
Pressure Regulating Shut Off Valve
PRT
Partial Revision Telex
Ps
Pump Supply Pressure
PS12
Fan Inlet Static Pressure
PS13
Fan Outlet Static Air Pressure
Ps3
Compressor Discharge Pressure
PSDS
Product Estándar Data System(Boeing)
PSE
Principal Structure Element
PSI
Pounds per Square Inch
PSIA
Pounds per Square Inch Absolute
PSID
Pounds per Square Inch Differential
PSL
Pressure Sensitive Label
PSL
Pressure Safety Low
PSN
Position
PSS
Pressure Sub-System ( Passenger Services System )
PSSD
Product Support Supplier Directory
PSU
Passenger Service Unit
Pt2.5
High Pressure Compressor Inlet Total Air Pressure
PTT
Press To Talk
PWR
Power
PYL
Pylon
Q
QA
Quality Assurance
QAD
Quick Attach Detach
QAR
Quick Access Recorder
QC
Quality Control
QEC
Quick Engine Change
QPR
Quality Problem Report
QRH
Quick Reference Handbook
QTY
Quantity
R
R
Repeat Interval
R&D
Research and Development
R/S
Rear Spar
RA
Resolution Advisory
RAAS
Runway Awareness and Advisory System ( EGPWS)
RACC
Rotor Active Clearance Control
RAG
Repair Assessment Guidelines
RAM
Random Access Memory
RAMP
Ramp Maintenance Manual
RATG
Repair Assessment Group
RCD
RAAS Configuration Database
RCH
Reach or Reaching
RD
Repair Document
RDL
Radial
RDO
Radio
RDR
Repair Design Record ( Boeing )
RDS
Radial Drive Shaft
REC
Receiver, Receive or Recording
REF
Reference
REG
Registration, Regular
RFA
Regulatory Flexibility Act
RH
Right Hand
RMA
Regional Monitoring Agency
RNAV
Area Navigation
RP
Reverse Proxy (computing)
RPM
Revolution Per Minute
RSP
Rotational Sampling Program
RTE
Root Trailing Edge
RTV
Room Temperature Vulcanizing
RVDT
Rotary Variable Differential Transformer
RVSM
Reduced Vertical Separation Minimum
RACAL
Raymond Brown, George Calder Cunningham (founders)
Sir Ernest Harrison OBE (Chairman) Electronics,
S
S
Stringer
SAC
Single Annular Combustor
SAETG
Structural Audit Evaluation Task Group
SAGBO
Stress Acceleration Grain Boundary
SAP
Starter Air Pressure
SAV
Starter Air Valve
SB
Service Bulletin
SBE
Service Bulletin Engineering
SBI
Service Bulletin Index / Service Bulletin Incorporation
SC
Status Change
SCT
Status Change Telex
SCU
Signal Conditioning Unit
SE
Service Engineering
SEB
Service Evaluation Bulletin
SEI
Servicio Extinsion de Incendios
SELCAL
Selective Calling System
SEQ
Sequence
SER
Service Evaluation Request
SFA
Special Flight Authorization
SFAR
Special Federal Aviation Regulation
SFC
Surface
SFC
Specific Fuel Consumption
SG
Specific Gravity
SGA
Specific Gravity Adjustment
SGML
Standard Generalized Markup Language
SID
Supplemental Inspection Document
SIIA
Structural Item Interim Advisory
SIRS
Significant Item Reporting System
SL
Service Letter
SLS
Sea Level Standard
SM
Shop Manual
SMPG
Structural Maintenance Planning Guidelines
SMS
Safety Management System
SN
Serial Number
SNECMA
Societe Detude et de Construction de Moteurs de Aviation
SOC
Supplement of Compliance
SOE
Standard Operating Environment
SOI
Specific Operating Instructions
SOPM
Standard Overhaul Practices Manual
SOSP
Structure Operator Support Program
SOV
Shut off Valve
SPD
Spare Part Drawing
SPM
Standard Practices Manual
SRM
Structural Repair Manual
SRP
Service Related Problem
SSE
Static Source Error
SSI
Structurally Significant Item
SSID
Supplemental Structural Inspection Document
SSM
System Schematic Manual
SSR
Secondary Surveillance Radar
STA
Station
STBY
Standby
STC
Supplemental Type Certificate
STD
Standard
STG
Structures Task Group
STN
Station
STP
Standard Temperature and Pressure
SV
Serviceable
SV
Shop Visit
SVC
Service
SVR
Shop Visit Rate
SW
Switch
SWPM
Standard Wiring Practice Manual
T
T
Tubular
T12
Fan Inlet Temperature (electrical sensor)
T2
Fan Inlet Temperature (hydro mechanical sensor)
T25
High Pressure Compressor Inlet Total Temperature
T495
Exhaust Gas Total Temperature
T5
Low Pressure Turbine Discharge Total Temperature
TA
Traffic Advisory
TACH
Tachometer
TAES
Transport Airplane and Engine Subcommittee
TAI
Thermal Anti-ice
TAPS
twin annular, pre-swirl , combustor which enables the fuel-air mixture GENX engine.
TAT
Total Air Temperature
TB
Terra Bite (1 trillion bytes computing)
TBC
Thermal Barrier Coating
TBO
Time Between Overhaul
TBV
Transient Bleed Valve
TC
Type Certificate
TC1
Turbine Clearance (5th -stage)
TC2
Turbine Clearance (9th-stage)
TCAS
Traffic Alert and Collision Avoidance System
TCC
Turbine Clearance Control
TCCV
Turbine Clearance Control Valve
TCDS
Type Certificate Date Sheet
TCF
Turbine Center Frame
TCM
Teledyne Continental Motors
TDPS
Technical Data Products and Services (Boeing)
TDTR
Technical Data Temporary Revision (Boeing )
TE
Trailing Edge
TEM
Tool and Equipment Manual
TEMP
Temperature / Temporary
TEO
Temperature Engine Oil
TFC
Traffic
TFE
Tubular Abrasion(BACH8A)Boeing
TFR
Technical Focus Report
TGB
Transfer Gear Box
THP
High Pressure Fuel Temperature
TI
Technical Issue
TIL
Until
TLA
Throttle Lever Angle
TLOD
Third Line of Defense
TMC
Torque Motor Current
TMF
Turbine Mid Defense
TNAC
Temperature Sensor Nacelle
TNSM
Task Numbered Shop Number
TOGA
Take-Off and go Around
TOGAA
Technical Oversight Group for Aging Airplanes
TOW
Time on Wing (also Take-off Weight
TPA
Turbine Powered Aircraft
TPW
Technical Publication Workstation
TR
Temporary Revision / Thrust Reverser
TRAS
Thrust Reverser Actuation System
TRF
Turbine Rear Frame
Ts5
Turbine Clearance Control (5th Stage Signal with timer)
Ts9
Turbine Clearance Control (9th Stage Signal with timer)
TSI
Time Since Installed
TSM
Troubleshooting Manual
TSN
Time Since New
TSO
Technical Standard Order / Time Since Overhaul
TSSV
Time Since Shop Visit
TURB
Turbulence
TWY
Taxiway
TY
Typical
TZ
Transition Zone
U
UAV
Unmanned Aircraft System
UER
Unscheduled Engine Removal
UFN
Until Further Notice
UFO
Unidentified Flying Object
UHF
Ultra High Frequency
UL
Underwriters Laboratories Inc.
ULB
Underwater Locator Beacon
ULM
Ultra Low Maintenance( Acft Batteries )
UML
Unified Modeling Language
UNA
Unable
UNREL
Unreliable
UPR
Upper
URL
Universal Resource Locator
US
United States
USB
Universal Serial Bus
USG
A type of bulletin that is considered unusually significant
V
VBV
Variable Bleed Valve
VCD
Vortex Control Device
VDC
Volt Direct Current
VER
Vertical
VFR
Visual Flight Rules
VG
Variable Geometry
VIB
Vibration
VIN
Vendor Identification Number
VLA
Very Light Aircraft
VLV
Valve
VMC
Visual Meteorological Condition
VSCF
Variable Speed Constant Frequency ( generator engine CFM 56-3)
VSI
Vertical Speed Indicator
VSM
Vertical Separation Minimum
VSV
Variable Stator Vane
W
W
White
W/O
Without
W/S
Wind Shield
WAAS
Wide Area Augmentation System
WAC
Walk Around Check
WATOG
World Airlines Technical Operations Glossary
WBL
Wing Buttock Line
WCP
Wing Chord Plane
WDM
Wiring Diagram Manual
Web Spot
Web Self-Paced Online Training
WFC
Widespread Fatigue Cracking
WHL
Wheel
WKN
Weaken
WL
Water Line
WM
Wiring Manual
WO
Work Order
WOW
Weight On Wheels
WPG
Work scope Planning Guide
WRNG
Warning
WRP
Wing Reference Plane
WS
Whisper Shout
WS
Wing Station
WT
Weight
WTT
Working Together Team
WXR
Weather Radar
Wf
Fuel Flow
X
XFR
Transfer
XMAS
Christmas
XMIT
Transmitter
XMR
Transformer
XNG
Crossing
XPDR
Transponder
Y
Y
Yaw
Y
Yellow
YC
Tourist Class
YCF
Economy Class Front
YCR
Economy Class Rear
YDM
Yaw Damper Module
YDS
Yaw Damper System
YES
Yankee Escape System
YINT
Yaw Integrator
YNFF
Yaw No First Failure
YR
Year
YRG
Yaw Rate Gyro
YSSM
Yaw Servo System Monitor
YTOM
Yaw Takeoff Mode
YTD
Year to Date
Z
Z
Zulu time (GMT )
Z
Impedance
Z
Zone
ZDL
Zone Division logic
ZFW
Zero Fuel Weight
ZIA
Zone Integration Area
ZIU
Zone Integration Unit
ZMU
Zone Maintenance Unit
ZN12
Zinc Iodide
ZP
Pressure Altitude
ZPC
Zone Power Controller
ZPC
Zone power Converter
Zpi
Indicated Pressure Altitude
ZR
Zirconium
ZRF
Zero Fuel Weight
ZTC
Zone Temperature Control
> FOR INFORMATION ONLY. UNCONTROLLED DATA !.
