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throw0101cyesterday at 4:29 PM3 repliesview on HN

> There's 1700+ runway incursions a year in the US alone, each one should be investigated as if an accident occurred and fixes proposed. Like when an accident occurs.

How many runways crossings are there in a year? How much is "1700+" a percentage of that total?


Replies

snittyyesterday at 6:31 PM

A "runway incursion" is a very broad term that includes everything from this accident to a single engine Cessna moving past the hold short line prematurely at a quiet airport.

FAA defines it as "Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle or person on the protected area of a surface designated for the landing and take off of aircraft." [0]

Many runway incursions run no risk of any accident, but are still flagged as issues, investigated, and punished if appropriate.

[0] https://www.faa.gov/airports/runway_safety/resources/runway_...

bombcaryesterday at 5:21 PM

The point is that it doesn't matter what percentage of the total they are, it's that 1 is too high without adequate explanation (the Gimli Glider caused vehicles to be guilty of a runway incursion by turning an abandoned runway into an active one, for example).

And the cost of investigating 1,700 should be within the budget.

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dpe82yesterday at 5:25 PM

My very fuzzy back of the envelope says easily 10s of thousands per day.