Jetstar Japan's plans for a second base have been delayed after the country's aviation authority found that two mechanics did not meet the airline's own qualification standards.
The low-cost carrier had planned to set up a base at Osaka's Kansai International Airport and begin operations there by December.
But the two employees, who were named as the airline's chief mechanics in Kansai airport, do not have enough years of experience to take on the role, says a Jetstar Japan spokesman. Despite that, they certified maintenance work, a task usually undertaken by chief mechanics.
Jetstar's internal regulations require mechanics to have at least three years of experience in an airline before they can take on the role of chief mechanic. Both men did not meet this criteria.
Jetstar was originally due to receive approval to set up base at Kansai airport on 5 December, and start parking aircraft there from 6 December.
It now has to submit a report to country's ministry of land, infrastructure, transport and tourism on how it intends to rectify the situation, and how it will improve its management process, says the spokesman.
"We've been cautioned by the ministry because they are saying if our company cannot manage qualification of our own staff, it means something is wrong with the management and internal processes," he says, adding that there are, however, no safety concerns.
While the carrier's operations from Narita airport is not affected, it will delay the launch of its twice daily Osaka Kansai-Tokyo Narita service. Other services from Kansai may also be affected, adds the spokesman.