HB 4-97-1974
protective cap (English Version)
- Standard No.
- HB 4-97-1974
- Language
- Chinese, Available in English version
- Release Date
- 1975
- Published By
- Professional Standard - Aviation
- Latest
- HB 4-97-1974
- Replace
- HB 4-1997-1969
HB 4-97-1974 history
- 1975 HB 4-97-1974 protective cap
- 0000 HB 4-1997-1969
