ILS glideslope What is the reference plane for the ILS glideslope angle?

Is a 3-degree glideslope based from the runway surface slope at the point where the antenna is installed or is it referenced to a zero-degree plane?

If you know of a design document or FAR/AIM reference, please include that as well.

Thanks! Dave P.

ils iaps

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asked May 21, 2018 at 18:05

ILS glideslope reference plane

Is a 3-degree glideslope based from the runway surface slope at the point where the antenna is installed or is it referenced to a zero-degree plane?

If you know of a design document or FAR/AIM reference, please include that as well.

Thanks! Dave P.

iaps