"john smith" wrote in message
...
I'm dubious of the more control while sliding down the pavement as
opposed to the grass. Seems like it could very pilot and aircraft
dependant. Could you cite your source where this is "proven?"
And, yes, I am a member of the group "that has".

Something I have read, Frank. I cannot cite a reference.
It has to do with variability in the ground surface off the paved
runway. Culverts, drainage ditches, holes, etc.
The paved surface is generally "smooth", allowing the aircraft to slide
unimpeded. With a two-bladed prop, it is possible to bump the blades so
as to prevent a prop strike and mandatory engine tear down. This would
leave only the belly skins and antenna to be replace.

It is my understanding that the major danger in a gear up landing in the
grass is the possibility of catching a wingtip and turning a slide into a
cartwheel which is more likely to result in fatalities., and it is for this
reason that it is recommended to land on a hard surface runway. I would
suggest that this danger is greater with the higher touchdown speed of many
retractable gear aircraft particularly twins, and especially if attempting a
landing with one leg not properly locked down.

In any emergency, passenger survival should be the primary consideration.

Happy landings