ABBREVIATIONS AND ACRONYMS USED IN FLIGHT MANAGEMENT SYSTEM DISPLAYS

Abbreviations and acronyms used in flight management system displays

Abbreviations are extensively used for the display of data by the control and display units of this and other flight management computer systems, and these abbreviations/ acronyms and their definitions are given here.

ACT                Active (related to modes)

ADC               Air Data Computer ALT Altitude

ALTN              Alternate

APPR             Approach

APR                Automatic Performance Reserve

ARR               Arrive

AT                   Autothrottle

ATIS               Airport Terminal Information Service

ATM                Assumed Temperature Method

ATO                Actual Time Overhead

BM                  Buffet Margin

BOD               Bottom Of Descent BRG Bearing

CG                  Centre of Gravity

CLB                Climb

CMD               Command _

CON               Continuous (EPR)

CRS               Course

CRZ                Cruise

CSTR             Constraint, e.g., SPD CSTR Speed Constraint

CTR             Centred

DA                  Drift Angle

DECEL         Decelerate

DEP            Depart

DES                Descent

DEST             Destination

DEV                Deviation

DIR                 Direction

DIS(T)             Distance

DNTK             Downtrack

DSPL             Display

DSR               Desired

DTG                Distance To Go

ECON         Economy

E/D             End of Descent

EFC            Expect Further Clearance

EFOB          Estimated Fuel On Board ELV Elevation

E/OUT         Engine Out

EPR            Engine Pressure Ratio

ETA            Estimated Time of Arrival

ETO            Estimated Time Overhead

EXEC           Execute

FF                   Fuel Flow

FCU            Flight Control Unit

FL               Flight Level

FLT PLN     Flight Plan

FOB            Fuel on Board

FOD            Fuel Over Destination

FPA            Flight Path Angle

FQ                   Fuel Quantity

GA                  Go Around

GS              Ground Speed

GW                 Gross Weight

IAS                  Indicated Air Speed

INTC               Intercept

IRS             Inertial Reference System

ISA             International Standard Atmosphere

INIT             Initialization

INBD           Inbound

INVAL         Invalid LAT Lateral

LRC            Long Range Cruise

LW                  Landing Weight

MAG VAR      Magnetic Variation

M_MO                Maximum operating Mach No.

MRC               Mach Referenced Cruise

MSA               Minimum Safe Altitude

 MSG              Message

NM              Nautical Miles

N                 Low pressure compressor speed

oAT             Outside Air Temperature OFST Offset

OPT            Optimum

Op Program          Operations Programme

PERF          Performa

PLNG             Planning, e.g., PLNG DES Planning Descent POS Position

PPOS             Present Position

PRED             Predicted PROC      Procedure, e.g., PROC TURN Procedure Turn

PROF             Profile, e.g., PROF DES Profile Descent

PWR               Power

QNH               Altimeter pressure scale setting to read airfield height above      sea-level on landing and take-off

RCL                Recall

RED               Reduced, e.g.,

RED TO         Reduced take-off thrust RNG Range

RSV                Reserve (fuel) REV Revision

RTE                Route

SAT                Static Air Temperature SEL Select

SID                 Standard Instrument Departure SPD Speed

STAR             Standard Terminal Arrival Route STBY Standby

STP                Step, e.g., STEP CLB

TAI                  Thermal Anti Ace

TAS                                                    True Air Speed

TAT                                                     Total Air Temperature

TGT                                                     Target, e.g., TGT ALT Target Altitude

TO APR                                 Take-Off Automatic Performance Reserve

TOC (T/C)                              Top of Climb

TOD (T/D)                              Top of Descent

TOGW                                    Take-Off Gross Weight

TKE                                                    Track Error

TP                                                       Turn Point

TRANS                                  Transition

TRK                                                    Track TURB Turbulence

VAL                                                    Valid

VAR                                                    Variation

V₁                                                        Critical engine-failure speed

V₂                    Take-off safety speed VERT Vertical

V_mo                  Mximum Operating Airspeed

VREF                                                 Reference Speed

V/S                                                      Vertical Speed

W/V                                      Wind direction/velocity

WPT                                     (WYPT) Waypoint

XTK                                                                            Cross Track

ZFW                                                                           Zero Fuel Weight