Helicopters of civil aviation. Acceptable noise levels and methods of noise level determination on the ground
STANDARD published on 1.1.1992
Designation standards: GOST 24647-91
Note: WITHDRAWN
Publication date standards: 1.1.1992
The number of pages: 17
Approximate weight : 51 g (0.11 lbs)
Country: Russian technical standard
Category: Technical standards GOST