Perrito Piloto,
even though (as far as I know) your figures are correct, I wouldnt jump to any conclusions for now. I understand you are just trying to say what could have happened, but one crew member and the whole wreckage is still deep down in the water, so lets be patient.
By the way, this article quotes a member of civil protection saying "it cant be human error, because the crew consisted of two pilots."
Tecnología - Enterrado el comandante del helicóptero 'Helimer 207' siniestrado en Almería - ADN.es