Originally Posted by
Fursty Ferret
Worth bearing in mind that this will not work on some types (eg B787) as the 1000ft and 500ft auto call-outs are actually driven by barometric data.
Boeing deserve to burn.
Having said that, we may be skinning the cat from the opposite end. What I imagines was a boxed value such as
[RA 780]
[RA 1036]
[RA 1220]
at the 3.3 NM distance-to-threshold (or wherever the 3 deg nominal intersects exactly 1k HAT).