Not only is it possible, it’s been done.
In Australia in the 60’s
It was a Bell 47 out the back of Sydney somewhere and if I remember, over a body of water, don’t recall which one.
The pilot had collapsed and the only other person on board was a boy about a 15 y.o.
He was talked down from straight and level flight, and he got it down safely, landed on the fixed floats on water if memory serves me..
Now, as incredible as that sounds, it gets better.
He was talked down by a National Park Ranger who couldn't fly and a talking kangaroo.
I saw it. On telly. Skippy The Bush Kangroo.
And it was in colour so it DID happen.
