Since 26OCT 00:00 UTC, according to the Incheon FIR authority they will NOT release the overflight permit for the below route.
LAMEN-A593-ONIKU
LAMEN-A593-PONIK-Y711-MUGUS
ONIKU-A593-LAMEN
ONIKU-A593-PONIK-Y711-MUGUS
ATOTI-Y722-NIRAT-A593-ONIKU
ATOTI-Y722-NIRAT-A593-PONIK-LAMEN
According to them, there is no need to obtain the over flight permit from Incheon FIR for the mentioned route. The operator can submit the FPL message and pass the Incheon FIR without permit.