| Designation | Modified Role | Location | Serial / Regist. |
|---|---|---|---|
| VC-137A | Staff transport |   |   |
| VC-137B | Staff transport |   |   |
| C-137B |   |   | |
| C-137C |   |   | |
| VC-137C | Staff transport |   |   |
| EC-137D (E-3A) | Special electronic installation |   |   |