Originally Posted by
Aerials
I remember reading Air Clues in the 60's or 70's of an accident to an RAF aircraft and the explanation concluded something about lots of water on the windscreen and it causing an apparent error in what the pilot saw due to refraction in the different substances, water and glass. Perhaps the Thunderbird accident had a similar root cause but not identified?
IT was known in my day, 60s and 70s as "prismatic wedge" which caused the outside view, runway etc., to appear higher than it was leading to a lower approach with risk of undershoot.