RNZ reports in January, Air New Zealand withdrew its services to Port Vila and Qantas pulled out of a codeshare arrangement over concerns about the safety of the runway there.
The government sought a World Bank loan, and short-term repairs were carried out in May, which were designed to last 12 months while a longer term solution was sought.
But last week work had to be carried out again after staff spotted a gap opening up in part of the runway.
