ECCN
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9D004
9D004 Other “software” as follows (see List of Items Controlled).
- Category
- Category 9—Aerospace and Propulsion
- Product group
- D. “Software”
Reason for Control
- NS
- AT
Official text
License Requirements
Reason for Control:
NS, AT
Control(s) Country Chart (See Supp. No. 1 to part 738)
- NS applies to entire entry, except 9D004.e for 9A012.a.1 items NS Column 1.
- AT applies to entire entry AT Column 1.
List Based License Exceptions (See Part 740 for a Description of All License Exceptions)
TSR: N/A.
Special Conditions for STA
STA: License Exception STA may not be used to ship or transmit software in 9D004.a and 9D004.c to any of the destinations listed in Country Group A:6 (See supplement no.1 to part 740 of the EAR)
List of Items Controlled
Related Controls: See also 9D104.
Related Definitions: N/A
Items:
a. 2D or 3D viscous “software”, validated with wind tunnel or flight test data required for detailed engine flow modelling;
b. “Software” for testing aero gas turbine engines, assemblies, “parts” or “components”, having all of the following:
b.1. “Specially designed” for testing any of the following:
b.1.a. Aero gas turbine engines, assemblies or components, incorporating “technology” specified by 9E003.a, 9E003.h or 9E003.i; or
b.1.b. Multi-stage compressors providing either bypass or core flow, specially designed for aero gas turbine engines incorporating “technology” specified by 9E003.a or 9E003.h; and
b.2. “Specially designed” for all of the following:
b.2.a. Acquisition and processing of data, in real time; and
b.2.b. Feedback control of the test article or test conditions (e.g., temperature, pressure, flow rate) while the test is in progress;
Note:
9D004.b does not specify software for operation of the test facility or operator safety e.g., overspeed shutdown, fire detection and suppression), or production, repair or maintenance acceptance-testing limited to determining if the item has been properly assembled or repaired.
c. “Software” “specially designed” to control directional solidification or single crystal material growth in equipment specified by 9B001.a or 9B001.c;
d. [Reserved]
e. “Software” “specially designed” or modified for the operation of items specified by 9A012;
f. “Software” “specially designed” to design the internal cooling passages of aero gas turbine engine blades, vanes and “tip shrouds”;
g. “Software” having all of the following:
g.1. “Specially designed” to predict aero thermal, aeromechanical and combustion conditions in aero gas turbine engines; and
g.2. Theoretical modeling predictions of the aero thermal, aeromechanical and combustion conditions, which have been validated with actual turbine engine (experimental or production) performance data.
ecfr-15cfr774-supp1-2026-08-28 · effective 2026-08-28
Issue date 2026-08-28. Amendment date 2026-08-28.
- eCFR Commerce Control List (15 CFR 774, Supplement No. 1)www.ecfr.gov
- eCFR versioner XML captured at ingestwww.ecfr.gov
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