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5m over the DER, why? + answer
02.02.2011
Submission:
Does anyone know the reason for the start of the Obstacle Identification Surface (OIS) on the runway at the Departure End of the Runway (DER) 5 m or 16 feet above the DER for departure procedures?
Why 5 m (16 feet)?
Why was that height chosen?
It's just that TERPS has gone from 35 feet to zero, for safety, and I was wondering what the background / reason / research said for PANS OPS considering 16 feet safe.
Daniela Steinbach – Lead Engineer - MITRE - USA
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Answer or Commentary:
5 meters comes for the wet runway. All new aircraft have to be certified for "balanced runway" as far as I heard for 10.7 meters (dry runway) and for 5m as well.Daniel – procedure design expert – SMATSA – Serbia
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