NATO CODENAME | SERVICE NAME | NOTES |
| Fencer A |
|
Initial trials aircraft with 'boxed' rear jet nozzles |
| Fencer B |
|
Dished area beneath jet nozzles |
| Fencer C |
|
Fairings on fin and engine air intakes |
| Fencer D |
Su-24MK |
Long nose with straight probe |
| Fencer D Mod |
|
Export version of Su-24MK |
| Fencer E |
Su-24MR |
Recce version used by AVMF |
| |
Su-19 |
Prototype |
| |
Su-24MP |
Jammer/sigint version |
| |
T-6-1 |
Fixed wing prototype |
| |
T-6-21 |
Variable geometry prototype |