HB 1693-1987
long flat key (English Version)
- Standard No.
- HB 1693-1987
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Aviation
- Latest
- HB 1693-1987
- Replace
- HB 1568-1975
HB 1693-1987 history
- 1970 HB 1568-1987 convex T key
- 0000 HB 1568-1975
