Dear God. This is pprune at its very worst. This is supposed to be professional pilots forum and yet again it seems that every idiot who knows absoulutely nothing about aviation is allowed to post. The lunatics truly are running the asylum.
As a genuine retired professional pilot, I will answer one query.
I have met two aviators who were forced to put a four-engined aeroplane into the water on finals. On both occasions the undercarriage was down and the flaps were deployed.
On neither occasion was anyone hurt.