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In the years following World War I, in response to pilots of the fledgling airmail service getting lost, and often crashing, the government built a network of giant concrete arrows and beacons that would lead the pilots safely along their route.
Just a question .. When these arrows were made, couldn't pilots use a compass and a map ? What if these arrows couldn't be seen due to bad visibility .. Just a thought
reply to post by gariac
Thanks gariac I guess I didn't think about flying heights during them times. I always thought that a flight had a pre planned route, like they get a map and plan way points prior to taking off. Then once you got your way points you just use compass bearings at each way point. I guess I don't think in depth about things sometimes
Oh and the 747 and c-17 I saw that yesterday made me chuckle
I created a thread about something similar awhile ago. Check it out.