The plane contained a laser ranger and could deliver laser-guided weapons, but it lacked a laser designator.
Although trucks and planes now deliver the mail, the coastal vessels still carry cargo, local passengers and an increasing number of tourists.
Not only does this specific plane deliver rides, but it is also one of the oldest planes the museum owns.
During the winter, the town villagers carve a runway into the thick ice sheet so that bush planes can deliver vital products, such as medicine.
The plane was ostensibly delivering relief supplies.
The plane was delivering 20 tons of equipment for Link Aviation.
But just as Robertson's calculations reassured him years earlier, the towers were built to withstand much greater lateral forces from wind than the planes could ever deliver.
When ships and planes delivered equipment on Pacific islands a century ago, the natives thought the stuff was supernatural.
Some planes deliver more than 200 measurements.
Officials said the plane, a four-engine turbo-prop, was probably delivering fuel to bases in the region.