STANDARD INDOOR METHOD OF COLLECTION AND PRESENTATION OF THE BARE TURBOSHAFT ENGINE NOISE DATA FOR USE IN HELICOPTER INSTALLATIONS (Noncurrent: Jun 1985)
Standard Indoor Method of Collection and Presentation of the Bare Turboshaft Engine Noise Data for Use in Helicopter Installations (Stabilized: Dec 2023)
Standard Indoor Method of Collection and Presentation of the Bare Turboshaft Engine Noise Data for Use in Helicopter Installations (Stabilized: Dec 2023)