Well its not quite "sea" level its lake level and I think the elevation is about 675 feet.

I also seem to recall from my time spent travelling with Twin Otter pilots that cold air enhances the lift of fixed wing aircraft.  Not sure if that works for rotary wing(helicopters).

Whichever. it appears that the bags are within  a predefined weight range and no doubt the pilots and their engineers will ensure that the demands are well within the aircraft capabilties.

The important thing is that there is "progress".  I am sure there is likely a glass or two of champagne being lifted at head office in celebration of a significant milestone achieved.

Onward and Upward.