34.2—Abbreviations.
The abbreviations used in this part have the following meanings in both upper and lower case:
COCarbon monoxide
EPAUnited States Environmental Protection Agency
FAAFederal Aviation Administration, United States Department of Transportation
HCHydrocarbon(s)
HPHorsepower
hrHour(s)
Code of Federal Regulations
kgKilogram(s)
kJKilojoule(s)
LTOLanding and takeoff
minMinute(s)
Code of Federal Regulations
PaPascal(s)
rORated output
rPRRated pressure ratio
secSecond(s)
SPShaft power
SNSmoke number
TTemperature, degrees Kelvin
TIMTime in mode
WWatt(s)
°CDegrees Celsius
%Percent