Or as they call it in Alaska "100mph tape". All the "Bush pilots" carry a roll in their emergency gear. There's been more than one plane that crashed so badly they tore off a wing (or badly damaged it) but the pilot used his axe (also in the emergency gear) to make some spruce reinforcement poles, duct taped it together and flew it out!
Since most of Alaska is uncontrolled airspace, if the pilot doesn't file a flight plan with *someone*, they're pretty much on their own!
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