To avoid confusion with the East German 'MiG-21PFM' designation given to the modified MiG-21PF (izdeliye 76A), the NVA redesignated its original MiG-21PFM of izdeliye 94A as 'MiG-21SPS'. This example is on display in the grounds of the Luftfahrt- und Technik-Museumspark Merseburg.