Document ID: chunk:federal_register_of_legislation:F2024L01024:front:0:p244
Version: federal_register_of_legislation:F2024L01024
Segment Type: other
Provision Reference: 
Character Range: 695347–698381

measured using either of the following:
a. Doppler laser method;
b. Forward laser diffraction method.
2. In 9A350 'VMD' means Volume Median Diameter and for water‑based systems this equates to Mass Median Diameter (MMD).
9. B.  Test, Inspection and Production Equipment
9. B. 001. Manufacturing equipment, tooling or fixtures, as follows:
a. Directional solidification or single crystal casting equipment designed for "superalloys";
b. Casting tooling, specially designed for manufacturing gas turbine engine blades, vanes or "tip shrouds", manufactured from refractory metals or ceramics, as follows:
1. Cores;
2. Shells (moulds);
3. Combined core and shell (mould) units;
c. Directional-solidification or single-crystal additive-manufacturing equipment designed for "superalloys".
9. B. 002. On‑line (real time) control systems, instrumentation (including sensors) or automated data acquisition and processing equipment, having all of the following:
a. Specially designed for the "development" of gas turbine engines, assemblies or components; and
b. Incorporating any of the "technologies" specified by 9E003.h. or 9E003.i.
9. B. 003. Equipment specially designed for the "production" or test of gas turbine brush seals designed to operate at tip speeds exceeding 335 m/s and temperatures in excess of 773 K (500°C), and specially designed components or accessories therefor.
9. B. 004. Tools, dies or fixtures, for the solid state joining of "superalloy", titanium or intermetallic aerofoil‑to‑disk combinations described in 9E003.a.3. or 9E003.a.6. for gas turbines.
9. B. 005. On‑line (real time) control systems, instrumentation (including sensors) or automated data acquisition and processing equipment, specially designed for use with any of the following:
N.B.: SEE ALSO 9B105.
a. Wind tunnels designed for speeds of Mach 1.2 or more;
Note: 9B005.a. does not apply to wind tunnels specially designed for educational purposes and having a 'test section size' (measured laterally) of less than 250 mm.
Technical Note:
                For the purposes of 9B005.a. Note, 'test section size' means the diameter of the circle, or the side of the square, or the longest side of the rectangle, at the largest test section location.
b. Devices for simulating flow‑environments at speeds exceeding Mach 5, including hot‑shot tunnels, plasma arc tunnels, shock tubes, shock tunnels, gas tunnels and light gas guns; or
c. Wind tunnels or devices, other than two‑dimensional sections, capable of simulating Reynolds number flows exceeding 25 x 106.
9. B. 006. Acoustic vibration test equipment capable of producing sound pressure levels of 160 dB or more (referenced to 20 µPa) with a rated output of 4 kW or more at a test cell temperature exceeding 1,273 K (1,000°C), and specially designed quartz heaters therefor.
N.B.: SEE ALSO 9B106.
9. B. 007. Equipment specially designed for inspecting the integrity of rocket motors and using Non‑Destructive Test (NDT) techniques other than planar x‑ray or basic physical or chemical analysis.