the US Navy lost 15 aircraft in non-combat accidents. 7 of those 15 involved SD.
From the US Navy:
My problem is what facts were produced by the authors of the USN paper to confidently state with absolute surety that these crashes were the result of the pilot being affected by a somatogravic illusion during a take off or go-around? Spatial disorientation coves a whole gambit of accidents including those caused by disorientation at high altitude in IMC. The subject is specifically go-around accidents. Maybe some pilots are more medically prone to these type of illusions than others? A hang over from the night before or lack of a decent night's sleep?
Over many years as a current pilot I have seen countless accident reports where the investigators opined the most likely cause of similar accidents involving take off or a go-around (night/IMC)was SI . They make an educated guess it was an SI problem; but that is not factual as it cannot be proved beyond doubt.