HB 413-1971
Rotary board (English Version)
- Standard No.
- HB 413-1971
- Language
- Chinese, Available in English version
- Release Date
- 1973
- Published By
- Professional Standard - Aviation
- Status
- Latest
- HB 413-1971
HB 413-1971 history
- 1973 HB 413-1971 Rotary board
