He said a grounded MA-60 aircraft is expected to be used for Tonga's air service this month.
RNZ reports the MA-60 was gifted to Tonga by China in 2013 and started flying domestically in August of that year.
However, the New Zealand government called for the aircraft to be certified by an international recognised certification authority, suspending some aid and issuing a travel advisory for Tonga over its safety concerns.
New Zealand's foreign ministry website said safety standards can vary and should be closely monitored.
