Mitsubishi license built version of Sikorsky S-55A (H-19/HO4S). 
List of Operators of S-55A |
| Years | Model | Org | |
|---|---|---|---|
| 1960/69 |  Japan Maritime Self-Defense Force |
Global Distribution of S-55A |
|
Construction Numbers |
| C/N | Year | History | |
|---|---|---|---|
| M55-011 w/o 1966 | 1960 | 8901 | |
| M55-013 | 1960 | 8902 | |
| M55-015 w/o 1968 | 1960 | 8903 | |
| M55-016 | 8904 | ||
| M55-018 w/o 1967 | 8905 | ||
| M55-019 | 8906 | ||
| M55-026 w/o 1967 | 8907 | ||
| M55-028 | 8908 | ||
| M55-034 | JA???? | ||
| M55-043 | 8909 | ||
| M55-044 | 8910 |
