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Paragraph 8B Equipment, Assemblies and Components

Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below:

Test, Inspection and Production Equipment

8B001

Water tunnels, having a background noise of less than 100 dB (reference 1 micro-pascal, 1 Hz) in the frequency range from 0 to 500 Hz, designed for measuring acoustic fields generated by a hydro-flow around propulsion system models.