In late 30's a Soviet biplane R-5 was modified to carry sixteen paratroops in special compartments fitted onto the lower wing of the aircraft. Each compartment housed two combat ready man with parachutes. R-5 was flown and performed quite well, achieving speeds of 130 km/h. Additional surfaces were fitted under the lower wing (to compensate for loss in wing's performance).

Similar modification with fewer pods was used on R-5 participated in resque of Cheluskin's crew.