Someplace I saw a letter of approval stating that one seatbelt could be used
for two people. It was intended for use where there is a single seat belt
across a bench seat, but I've heard of people also justifying putting three
in the back with it.

I don't know where I saw it.

Plan B: a C182 can have a child's seat installed. A friend of mine has one.
He can fit five in his Skylane with it.

Plan C: Get checked out in a Cherokee Six.

"The Weiss Family" wrote in message
...
I'm a new pilot (passed my checkride last Saturday). I have a wife and
three small children (all 6yrs and under).

Weight and balance would be OK to fit three kids in back of a 172, and it
looks like plenty of space (at least while they're young). Is it possible
to get a STC to install a third seatbelt?

If not, is there any other fixed-gear single in a similar price range that
could accomodate 5?

Thanks,

Adam