9D004Other "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 in 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 in 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 control 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 in 9B001.a. or 9B001.c.;
d. Not used;
e. "Software" specially designed or modified for the operation of items specified in 9A012;
f. "Software" specially designed to design the internal cooling passages of aero gas turbine blades, vans and "tip shrouds";
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 production) performance data.