Crows Landing Noise Measurement Study: Summary of Measurements, Data and Analysis for the MD 600N Helicopter

The U.S. Department of Transportation, John A. Volpe National Transportation Systems Center (Volpe Center), Environmental Measurement and Modeling Division, provided technical support to the Federal Aviation Administration, as a part of a National Rotorcraft Technology Center project to evaluate helicopter noise abatement approach procedures. In November 1996, the Volpe Center measured noise for MD Helicopters Inc.’s MD 600N helicopter. This document describes the planning and execution of the study at National Aeronautics and Space Administration Ames Crows Landing Test Facility in Crows Landing, California. Additionally, the data reduction procedures and data adjusted to standard conditions are presented.