Thank you for your frank response three miles. I have no idea what happened as I wasn't there. I simply made a suggestion. It may well be wrong, but I didn't base my suggestion purely on the Aviation Herald report. As to what I perceive as a short flight: OSL-HEL is about 70 minutes flying. In my book that is a short haul, and thus a relatively short, flight. For all we know the crew elected to continue after discussing the matter with engineering and on the basis of no indicated malfunctions.