A l'instar de tous les appareils soviétiques ayant participé à l'opération "Danube," les Yak-27R du 931.OGRAP avaient été revêtus de deux bandes rouges sur la queue. On remarquera la trappe photo ouverte juste devant la buse du canon NR-23.

Like all the Soviet aircraft that participated in the operation "Danube," the Yak-27R of the 931.OGRAP had received two red stripes on the tail. Note the open photo hatch right in front of the NR-23 gun nozzle.