"What happened is that we had an emergency fire warning on one of our aircraft and the crew carried out an emergency landing," Peter Chikumba, the national carrier’s chief executive, told AFP.
"The aircraft landed safely and uneventfully at Harare airport. It is a regulatory requirement (that) when we have such a warning, we have inform the authorities."
Chikumba said Air Zimbabwe’s engineers were investigating what activated the fire signals on the plane which was coming from the world famous resort town of Victoria Falls.
The carrier is one of several state-owned firms that have posted losses and have been shortlisted for a sell-off. The airline is weighed down by debt, an ageing fleet and high staff turnover.
The airline’s fleet comprises of two B767-200, three B737-200s and three Chinese made MA60s.