L-39 / centr. signal system controller
L-39 / controller of central signal
L-39 / diode box-centr.signal system
L-39 / diode box
L-39 / box of diodes
L-39 / control box
L-39 / radiocompass indicator
L-39 / air generator
L-39 / AOT control unit
L-39 / control unit of temperature in the cockpit
