Standard Specification for Aviation Turbine Fuel Containing Synthesized Hydrocarbons
1.1 This specification covers the manufacture of aviation turbine fuel that consists of conventional and synthetic blending components.
1.2 This specification applies only at the point of batch origination, as follows:
1.2.1 Aviation turbine fuel manufactured, certified, and released to all the requirements of Table 1 of this specification (D7566), meets the requirements of Specification D1655 and shall be regarded as Specification D1655 turbine fuel. Duplicate testing is not necessary; the same data may be used for both D7566 and D1655 compliance. Once the fuel is released to this specification (D7566) the unique requirements of this specification are no longer applicable: any recertification shall be done in accordance with Table 1 of Specification D1655.
Part 1—Basic Requirements
Jet A or Jet A-1
Acidity, total mg KOH/g
D3242 / IP 354
Aromatics: One of the following requirements shall be met:
1. Aromatics, vol %
D1319 or IP 156
2. Aromatics, vol %
D6379 / IP 436
Sulfur, mercaptan,C mass %
D3227 / IP 342
Sulfur, total mass %
D1266, D2622, D4294, D5453, or IP 336
D2887 / IP 406D or D86E or IP 123E
Distillation temperature, °C:
10 % recovered, temperature (T10)
50 % recovered, temperature (T50)
90 % recovered, temperature (T90)
Final boiling point, temperature
Distillation residue, %
Distillation loss, %
Flash point, °C
D56 or D3828G, IP 170G or IP 523G
Density at 15°C, kg/m3
775 to 840
D1298 / IP 160 or D4052 or IP 365
Freezing point, °C
–40 Jet AH
D5972 / IP 435, D7153 / IP 529, D7154 / IP 528, or D2386 / IP 16
–47 Jet A-1H
Viscosity –20°C, mm2/sI
D445 / IP 71, Section 1
Net heat of combustion, MJ/kg
D4529, D3338, D4809 or IP 12
One of the following requirements shall be met:
(1) Smoke point, mm, or
D1322 / IP 57
(2) Smoke point, mm, and
Naphthalenes, vol, %
Copper strip, 2 h at 100°C
D130 / IP 154
2.5 h at control temperature of 260°C, min
D3241 / IP 323
Filter pressure drop, mm Hg
Tube deposits less than
No peacock or abnormal color deposits
Existent gum, mg/100 mL
D381, IP 540
Without electrical conductivity additive
With electrical conductivity additive
Electrical conductivity, pS/m
D2624 / IP 274
Part 2—Extended Requirements
D2887 / IP 406D, D86E or IP 123E
1.2.2 Field blending of synthesized paraffinic kerosine (SPK) blendstocks, as described in Annex A1 (FT SPK) or Annex A2 (HEFA SPK) with D1655 fuel (which may on the whole or in part have originated as D7566 fuel) shall be considered batch origination in which case all of the requirements of Table 1 of this specification (D7566) apply and shall be evaluated. Short form conformance test programs commonly used to ensure transportation quality are not sufficient. The fuel shall be regarded as D1655 turbine fuel after certification and release as described in 1.2.1.
1.2.3 Once a fuel is redesignated as D1655 aviation turbine fuel, it can be handled in the same fashion as the equivalent refined D1655 aviation turbine fuel.
1.3 This specification defines specific types of aviation turbine fuel that contain synthesized hydrocarbons for civil use in the operation and certification of aircraft and describes fuels found satisfactory for the operation of aircraft and engines. The specification is intended to be used as a standard in describing the quality of aviation turbine fuels and synthetic blending components at the place of manufacture but can be used to describe the quality of aviation turbine fuels for contractual transfer at all points in the distribution system.
1.4 This specification does not include all fuels satisfactory for aviation turbine engines. Certain equipment or conditions of use may permit a wider, or require a narrower, range of characteristics than is shown by this specification.
1.5 While aviation turbine fuels defined by Table 1 of this specification can be used in applications other than aviation turbine engines, requirements for such other applications have not been considered in the development of this specification.
1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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