| Value | Hundred's digit (classification) | Ten's digit (competent authorities) | One's digit |
|---|---|---|---|
| 0 | Training group | Yokosuka Naval District | Odd number is standing air group. Even number is special setting air group. |
| 1 | Reconnaissance aircraft group | ||
| 2 | Fighter group (carrier fighter) | ||
| 3 | Fighter group (interceptor fighter) | Kure Naval District | |
| 4 | Float reconnaissance aircraft group | ||
| 5 | Carrier dive bomber group, carrier torpedo bomber group | Sasebo Naval District | |
| 6 | Carrier air group, submarine-launched floatplane group | ||
| 7 | Land-based bomber group, land-based attack bomber group | Maizuru Naval District | |
| 8 | Flying boat group | ||
| 9 | Maritime patrol aircraft (Maritime Escort) group | Shinkyō Naval District | |
| 10 | Military airlift group |
