URMV-3 IS-4
| IS-4 | |
|---|---|
| Role | Sailplane |
| National origin | Romania |
| Manufacturer | URMV-3 |
| Designer | Iosif Şilimon |
| First flight | 5 June 1959 |
| Developed from | URMV-3 IS-3d |
The IS-4 was a high performance glider designed by Iosif Şilimon and built in Romania in the late 1950s at the URMV-3 (Rom: Uzinele de Reparatii Material Volant-3 - Glider repair and manufacture factory) factory at Braşov.