87.2—Acronyms and abbreviations.
The abbreviations used in this part have the following meanings in both upper and lower case:
COCarbon Monoxide
CO2Carbon dioxide.
FAAFederal Aviation Administration, Department of Transportation
HCHydrocarbon(s)
hr.Hour(s)
LTOLanding takeoff
min.Minute(s)
NOXOxides of nitrogen
rORated output
rPRRated pressure ratio
sec.Seconds
SPShaft power
SNSmoke number
TTemperature, degrees Kelvin
TIMTime in mode
WWatt(s)
°Degree
%Percent