If you check the facts on OKX it eventually ran completely out of oil, including the emerg lube sump. That was what lead to the removal of the T fitting that originally supplied oil to the torque meter.
The 139 is certified for 30 min after complete loss of oil and actually tested well beyond that so I'm not sure why you insist on saying it is not.
Regardless, I can see I'm beating a dead horse here so lets get this thread back to the 76 ditching in Nigeria.
Cheerio