Export Control
EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.Copyright
© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).Applicability
All
Description
TASK 70-07-00-990-501 Abbreviation Symbols
General
The abbreviation symbols given below are I.A.E. approved.
Para/Sect
Paragraph/Section
%
Percent
A
Ampere(s)
A/sqft
Ampere(s) per Square Foot
AC
Alternating Current
ACAC
Air Cooled Air Cooler
ACC
Active Clearance Control
ACOC
Air Cooled Oil Cooler
AG
Analar Grade
AISI
American Iron and Steel Institute
ALT
Alternator
AMS
Aerospace Material Specification
ANPT
Aeronautical National Pipe Threads (Taper)
ANSI
American National Standards Institute
approx
Approximately
ASI
Air Speed Indicator
ASM
American Society for Metals
Assy
Assembly
ASTM
American Society for Testing Materials
ASU
Altitude Sensing Unit
ATA
Air Transport Association of America
AWG
American Wire Gage
AWS
American Welding Society
bar
Bars
BDC
Bottom Dead Center
Brg
Bearing
BS
British Standard
BSBVA
Booster Stage Bleed Valve Actuator
BV
Bleed Valve
BVCU
Bleed Valve Control Unit
C
Celsius, Centigrade
C of G
Center of Gravity
Cat
Category
ccw
Counterclockwise
CF
Current Flow
CFH cu ft/h
Cubic Feet per Hour
CFM cu ft/min
Cubic Feet per Minute
CFR
Code of Federal Regulations
CG
Commercial Grade
Chap
Chapter
Chap/Sect/Subj
Chapter/Section/Subject
CI
Current Induction
CL ENV
Clearance Envelope
cm
Centimeter(s)
cm
Cubic Centimeter(s)
CNA
Common Nozzle Assembly
CoMat
Consumable Material(s)
CPEC
Cyclo Processi Elettrochimici
CPRM
Cyclo Processi Revisione Motori
CSD
Constant Speed Drive
CSN
Catalog Sequence Number
cu ft
Cubic Foot
cu in
Cubic Inch
cw
Clockwise
dB
Decibels
DC
Direct Current
deg
Degree(s) only Temp.
dem water
Demineralized Water
DEng
Directorate of Engineering
dept
Department
dia
Diameter
Dim
Dimension
Disassy
Disassembly
dm
Decimeter(s)
DTD
Directorate of Technical Development
DWG
Drawing
EDTA
Ethylenediamine Tetraacetate
EEC
Electronic Engine Control
EGT
Exhaust Gas Temperature
ENG
Engine
EPR
Engine Pressure Ratio
EQSP
Equally Spaced
Exist
Existing
F
Fahrenheit
FAA
Federal Aviation Administration
FBS
Fine British Standard
FCOC
Fuel Cooled Oil Cooler
FDV
Fuel Distribution Valve
FIAT
Fabrica Italiana Automobili Torino
Fig
Figure
FIR
Full Indicator Reading
fl oz
Fluid Ounce (US)
FMU
Fuel Metering Unit
FP
Flash Point
FPI
Fluorescent Penetrant Inspection
ft
Foot/Feet
ft/min FPM
Feet per Minute
ft/s FPS
Feet per Second
FWD
Forward
g
Gram(s)
G
Gravity
GA
General Application
gal
Gallon(s) (US)
gal/min
Gallon(s) per Minute
gmm
Grammillimeters
GS
Grit Size
GSE
Ground Support Equipment
h
Hour
HB
Hardness Test Value (Brinell)
HE
High Energy
Hg
Mercury
HK
Hardness Test Value (Knoop)
HP
High Pressure
HPC
High Pressure Compressor
HPT
High Pressure Turbine
HR(X)
Hardness Test Value (Rockwell)
HR(XXX)
Superficial Hardness Test Value (Rockwell)
HS
High Speed
HSS
High Speed Steel
HT
High Tension
HV
Hardness Test Value (Vickers)
Hz
Hertz, Cycles per Second
HYD
Hydraulic
IAE
International Aero Engines
ICAO
International Civil Aviation Organization
ID
Inner Diameter
IDG
Integrated Drive Generator
IDS
Interdivisional Design Standard
IEPR
Integrated Engine Pressure Ratio
IES
Interdivisional Engineering Standard
IGV
Inlet Guide Vanes
imp
Imperial
imp fl oz
Imperial Fluid Ounce
imp gal
Imperial Gallon
imp gal/h
Imperial Gallon(s) per Hour
imp pt
Imperial Pint
imp pt/h
Imperial Pint(s) per Hour
imp qt
Imperial Quart
imp qt/h
Imperial Quart(s) per Hour
in.
Inch(es)
inHg
Inch(es) of Mercury
Insp
Inspection
INT
Intermediate
Intf
Interference
IPC
Illustrated Parts Catalog
IPL
Initial Provisioning List
ISA
International Standard Atmosphere
ITEM
Illustrated Tools and Equipment Manual
JAEC
Japanese Aero Engines Corporation
K
Kelvin
kg
Kilogram(s)
KHz
Kilohertz
KPa
Kilopascal
Kt
Carats
kV
Kilovolts
kW
Kilowatt
l
Liter
l/h
Liter(s) per Hour
l/min
Liter(s) per Minute
lb
Pound Weight
lb/s
Pounds per Second
lb/m PPM
Pounds per Minute
lb/sq ft
Pounds per Square Feet
lb/sq in
Pounds per Square Inches
lbf
Pounds Force
lbf ft
Pounds Force Feet
lbf in
Pounds Force Inches
LD
Light Duty (Electrical Harness)
LE
Leading Edge
LH
Left Hand
LMC
Least Material Condition
LP
Low Pressure
LPC
Low Pressure Compressor
LPT
Low Pressure Turbine
LRU
Line Replacement Unit
LT
Low Tension
lube
Lubricant
m
Meter(s)
M
Million (Mega)
mA/s
Milliampre per Second
Max
Maximum
MC
Magnetic Current
MeV
Million Electron Volts
MF
Magnetic Flow
mg
Milligram(s)
MH
Man Hour
MHz
Megaherts
Min
Minimum
min
Minute(s)
Misc
Miscellaneous
ml
Milliliter
mm
Millimeter
m/s
Meter(s) per Second
m/min
Meter(s) per Minute
mm/s
Millimeter(s) per Second
mm/min
Millimeter(s) per Minute
MMC
Maximum Material Condition
mmHg
Millimeter of Mercury
Mod
Model
Mon
Month
MPa
Megapascal
MPA
Magnetic Particle Analysis
MPI
Magnetic Particle Inspection
MTH
MTU-Technische Hilfsstoffe
MTU
Motoren- und Turbinen Union GmbH
MTV
MTU-Fertigungs-Verfahrensnormen
MVP
Moisture Vapor Proof
N
Newton(s)
NBS
National Bureau of Standards
NDT
Non-Destructive Testing
NGV
Nozzle Guide Vane(s)
Nm
Newton Meter(s)
No.
Number(s)
NPD
Net Peak Density
NPT
National Pipe Thread (taper)
OAT
Outside Air Temperature
OD
Outer Diameter
OGV
Outlet Guide Vane
OMat
Overhaul Materials
OP
Overhaul Process
OSHA
Occupational Safety and Health Administration
oz
Ounce(s)
oz f
Ounce Force
oz in
Ounce Inch
P
Pressure
P/N
Part Number(s)
P and W
Pratt and Whitney
Pa
Pascal
Part Ident
Part Identification
PCI
Overhaul Processes and Consumables Index
PD
Pitch Diameter
PES
Production Engineering Specification
PMA
Permanent Magnetic Alternator
PMC
Process Material Control
PN
Part Number(s)
pph lb/h
Pounds per Hour
PPI Peak/in
Peak per Inch
ppM Part/M
Parts per Million
PS
Process Solution
psi lb/sq in
Pounds per Square Inch
psia
Pounds per Square Inch Absolute
lb/sq in a
psid
Pounds per Square Inch Differential
lb/sq in d
psig
Pounds per Square Inch Gage
lb/sq in g
pt
Pint (US)
pt/h
Pint(s) per Hour (US)
PVC
Polyvinyl Chloride
QA
Quality Assurance
QECU
Quick Engine Change Unit
qre
Quire
qt
Quart (US)
qt/h
Quart(s) per Hour (US)
qty
Quantity
R
Radius
R
Rankine
Ra
Roughness (average)
R+D
Research and Development
Ref
Reference
RFS
Regardless of Feature Size
RG
Reagent Grade
RH
Right Hand
RMS
Root Mean Square
rpm rev/min
Revolutions per Minute
RPS
Rationalized Process Sheet
RR
Rolls-Royce plc
RSA
Request for Service Allowance
RT
Room Temperature
RWD
Rearward
s
Second(s)
S/N
Serial Number
SB
Service Bulletin
Sect
Section
SFPM
Surface Feet per Minute
SG
Specific Gravity
SHN
Scratch Hardness Number
SOV
Shutoff Valve
SP
Standard Practice
SPM
Standard Practices Manual
SPMC
Service Process Material Control
SPOP
Service Process Operation Procedure
SPS
Service Process Solution
sq dm
Square Decimeter
sq ft
Square Foot (Feet)
sq in
Square Inch(es)
sq m
Square Meter(s)
sq mm
Square Millimeter(s)
sq yd
Square Yard
SWG
Standard Wire Gage
TB
Threading Bar
TBD
To be determined
TBO
Time Between Overhaul
TDC
Top Dead Center
TE
Trailing Edge
TIG
Tungsten Inert Gas
TIR
Total Indicator Reading
TIS
Test Instrumentation Sheet
UNF
Unified Fine Thread
US
United States
V
Volt(s)
VIGV
Variable Inlet Guide Vane(s)
Vol
Volume
VSV
Variable Stator Vane
WR
Work Requirement(s)
yd
Yard(s)