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Air Zimbabwe head Innocent Mavhunga on Tuesday described the incident at the Johannesburg airport as "another operational challenge."
Witnesses said a ground handling firm blocked the Boeing 737-500 aircraft with vehicles on Friday to demand unpaid debts of nearly $500,000. They said it took seven hours to take baggage to the terminal in private cars after many passengers walked across the airport.
Once-daily flights to Johannesburg are scheduled for Friday and Sunday
Long haul flights to Europe and Asia were canceled last week by shortages of gasoline.