Co-pilot exits the aircraft during the approach for an emergency landing...

[Eutychus]

Better article from the local press, which they claim they will update regularly, repeats the 'jump' testimony, without the 'body of water' bit:

https://www.newsobserver.com/news/lo...264036966.html

Edited to add: here's another link from an industry magazine: https://www.flyingmag.com/co-pilots-...s-authorities/