Around 50 twin-seat MiG-21U’s of various models (U, US and UM respectively) have been delivered. Just over half are believed to remain in service.
None available at present.
- World Air Forces Directory 2009/2010 (Ian Carroll)
- MiG 21 ‘Fishbed’: The World’s Most Widely Used Supersonic Fighter (Yefim Gordon & Bill Gunston)