JABBARA
Maintenance personnel in Saipan later discovered “metal particles” – apparently caused by abrasion – blocking an engine oil filter. According to South Korean official news agency Yonhap, a replacement engine had to be flown to Saipan.
It didn't really say what the warning light was and I'm not sure if the 767 has a chip detector indication but it was serious enough to warrant an engine change rather than continue 4hrs over an open ocean. I would understand had they turned around and gone back to ICN passing hundreds of airports within a stones throw away.
Any drivers/engineers with 767/CF6 knowledge can enlighten us on warnings and procedures in this situation?