HB 544-1989
double hole fork (English Version)
- Standard No.
- HB 544-1989
- Language
- Chinese, Available in English version
- Release Date
- 1989
- Published By
- Professional Standard - Aviation
- Latest
- HB 544-1989
HB 544-1989 history
- 1989 HB 544-1989 double hole fork
- 1970 HB 544-1974 double hole fork
