The transport ministry instructed nine low-cost carriers to improve safety standards and avoid prioritising cost-cutting.
The missing data deepens the puzzle of what caused the deadly air disaster in Muan, South Korea, late last month.
In a statement posted online, Jeju Air said it was "bowing" its head in apology and would investigate the crash. A total of 179 people died. Two of the plane's six crew members survived and were ...