When I first started flying, the concept of altitude was confusing. For pilots the reference, of course, is this thing called mean sea level. But all I was interested in at first was my height above the ground-a measurement with some substance that made sense to me.
When I first started flying, the concept of altitude was confusing. For pilots the reference, of course, is this thing called mean sea level. But all I was interested in at first was my height above the ground—a measurement with some substance that made sense to me.
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