scope:

Use/relationship: The Airborne Noise Analysis and Control Design History Booklet documents the Contractor's noise analysis, noise control design, and quality assurance inspection efforts to demonstrate compliance with requirements of MIL-STD-1474.

a. This Data Item Description (DID) contains the format, content, and preparation instructions for the data generated in response to the applicable tasks in MIL-STD-1474 and ANSI/ASA S12.67, Pre-Installation Airborne Sound Measurements and Acceptance Criteria of Shipboard Equipment.

b. This DID shall be applied for each noise grade, class, rating, and type of equipment to be tested for airborne noise performance when MIL-STD-1474 and ANSI/ASA S12.67 is invoked in the contract specification or statement of work.

c. This DID supersedes DI-HFAC-81278.