After World War II, the company was nationalised and used its official name Zlínské letecké závody, a.s. v národní správě (Zlín Aviation Works JSC under National Administration) and later on, it was incorporated to the Automobilové závody, národní podnik (Automotive Works, National Enterprise) as its Otrokovice Plant using its new trade name Zlínavion.

In mid-Sept 1948, the factory became a part of newly established Let, národní podnik (seated in Prague) as its Plant No.7 in Otrokovice (nominally merged with Zlin and renamed to Gottwaldov on 1 January 1949).

Series of Z-26 Trener were produced in the 1960s and 70s in large numbers for domestic civil and military use as well as export to both eastern and western customers.

The company suffered financial problems in 2002, it was renamed Moravan-Aeroplanes a.s. and it continued production of upgraded variants of Z-242L and Z-143L with improved wing design and Lycoming engines.

In December 2006, the company was taken over by CzechAircraft, s. r. o. owned by Irish QucomHaps Holding Ltd. represented by Billy Harkin and renamed Moravan Aviation s.r.o.