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Comment by marcosdumay

4 hours ago

Gravel flies. You can't have it anywhere near an airport runway.

(Some planes have no problem with it, though. You can make even the entire runway of gravel if you only fly those.)

the distinction here is mainly jets vs props.

  • Gravel will happily fuck up a prop just as much as a turbine; it's more about ground clearance. The engines on modern airliners are quite low to the ground, which is why they tend to ingest gravel kicked up by the nose gear.