Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p247
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 703300–706251

manufactures specified by 9A110, made either with organic matrix or metal matrix utilising fibrous or filamentary reinforcements having a "specific tensile strength" greater than 7.62 x 104 m and a "specific modulus" greater than 3.18 x 106 m.
N.B.: SEE ALSO 1C010 AND 1C210.
Note: The only resin impregnated fibre prepregs specified by entry 9C110 are those using resins with a glass transition temperature (Tg), after cure, exceeding 418 K (145oC) as determined by ASTM D4065 or equivalent.
9. D.  Software
9. D. 001. "Software", not specified in 9D003 or 9D004, specially designed or modified for the "development" of equipment or "technology", specified by 9A001 to 9A121, 9B or 9E003.
9. D. 002. "Software", not specified in 9D003 or 9D004, specially designed or modified for the "production" of equipment specified by 9A001 to 9A121 or 9B.
9. D. 003. "Software" incorporating "technology" specified by 9E003.h. and used in "FADEC systems" for systems specified by 9A or equipment specified by 9B.
9. D. 004. Other "software" as follows:

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 or components, having all of the following:
1.  Specially designed for testing any of the following:
a.  Aero gas turbine engines, assemblies or components, incorporating "technology" specified by 9E003.a., 9E003.h. or 9E003.i.; or
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
2.  Specially designed for all of the following:
a.  Acquisition and processing of data, in real time; and
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.
9. D. 004. c. "Software" specially designed to control directional‑solidification or single‑crystal material growth in equipment specified by 9B001.a. or 9B001.c.;
9. D. 004. d. Not used;
9. D. 004. e. "Software" specially designed or modified for the operation of items specified by 9A012;
9. D. 004. f. "Software" specially designed to design the internal cooling passages of aero gas turbine blades, vans and "tip shrouds";
9. D. 004. g. "Software" having all of the following:
1. Specially designed to predict aero thermal, aeromechanical and combustion conditions in aero gas turbine engines; and
2. Theoretical modelling predictions of the aero thermal, aeromechanical and combustion conditions, which have been validated with actual aero gas turbine engine (experimental or