The abbreviations used in this part have the following meanings in both upper and lower case:
CO2 Carbon dioxide
CO Carbon monoxide
EPA United States Environmental Protection Agency
FAA Federal Aviation Administration, United States Department of Transportation
g Gram(s)
HC Hydrocarbon(s)
HP Horsepower
hr Hour(s)
H2 O Water
kg Kilogram(s)
kJ Kilojoule(s)
kN Kilonewton(s)
kW Kilowatt(s)
lbf Pound force
LTO Landing and takeoff
m Meter(s)
mg Milligram(s)
[MICRO] g Microgram(s)
min Minute(s)
MJ Megajoule(s)
NOX Oxides of nitrogen
nvPM Non-volatile particulate matter
nvPMmass Non-volatile particulate matter mass
nvPMMC Non-volatile particulate matter mass concentration
nvPMnum Non-volatile particulate matter number
Pa Pascal(s)
rO Rated output
rPR Rated pressure ratio
sec Second(s)
SP Shaft power
SN Smoke number
T Temperature in degrees Kelvin
TIM Time in mode
°C Degrees Celsius
% Percent
14 C.F.R. §34.2