FWIW- I'm close to being able to post/send to dave an excel solver setup which makes it easier to automatically iterate possible solutions to *PROBABLE* ability to reach PNG crash site given a few known ' gates ' of known time and lockheed report of max range methods, etc. Work so far *** SEEMS ** to show that a Gross weight at takeoff of around 14,500 would work - BUT THAT THEN requires a TARE weight of around 2000 pounds less than normal- assuming a constant wind of around 20 to 30 mph throughout.... As I've said its very preliminary- I s†ill have to double check effects of time at ontario and expected time at howland. I can duplicate fairly closely the mantero data... I'm trying to make it simple to set gates and derive other 'probable gates all related to GPH and Gross weights..... more later