Home / Standards / GB/T 47259-2026 GB/T 47259-2026 Upcoming Noise transmission loss test method of aircraft fuselage structures 航空器机身结构隔声试验方法 Standard Type GBT ICS 49.090 CCS V44 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 国家标准委 Drafting Unit N/A