For exhaust emission testing, fuel that meets the specifications listed in this section shall be used. Additives used for the purpose of smoke suppression (such as organometallic compounds) shall not be present.

  Specification for Fuel To Be Used in Aircraft Turbine Engine Emission
                                 Testing
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                 Property                     Allowable range of values
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Density at 15 °C.....................  780-820.
Distillation Temperature, °C 10%       155-201.
 Boiling Point.
Final Boiling Point.......................  235-285.
Net Heat of Combustion, MJ/Kg.............  42.86-43.50.
Aromatics, Volume %.......................  15-23.
Naphthalenes, Volume %....................  1.0-3.5.
Smoke point, mm...........................  20-28.
Hydrogen, Mass %..........................  13.4-14.1.
Sulfur Mass %.............................  Less than 0.3%.
Kinematic viscosity at_20 °C, mm \2\ / 2.5-6.5.
 sec.
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[Doc. No. FAA-1999-5018, 64 FR 5559, Feb. 3, 1999]