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I require eye to wheel height (EWH) of Twin Otter Aircraft (DHC-6 400 series) to calculate the distance of APAPI lights from Threshold. Specification for the Twin Otter is available but no information pertaining to EWH is mentioned over there.

I have gone through ICAO Part 4 Visual Aids Appendix 6 as well but EWH is not listed for DHC-6.

What should be the possible way to calculate the EWH?

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  • $\begingroup$ Location of approach lighting relative to threshold is specified in US DoT Order JO 6850.2B and does not need to be calculated. It is 1000ft or 300m. $\endgroup$ – Pilothead Jun 7 '18 at 16:33

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