The THK-5 was a twin-engine aircraft designed by Stanisław Rogalski and built in Turkey in 1945 as an air ambulance.
[1][2] It was a conventional, low-wing cantilever monoplane of wooden construction throughout.
The main units of the tailwheel undercarriage retracted into the wing-mounted engine nacelles and the THK-5 could carry two stretcher cases plus a medical attendant.
[3] A single example of the type was exported, sold to Denmark.
When THK was taken over by MKEK, this was one of the designs selected for further work.