"Ron Natalie" wrote in message
m...

"Ron Wanttaja" wrote in message
...
The 172 came out in the '50s, and there's a good chance that the actual
type certificate is that of the Cessna 170, which came out in the '40s.

The 172 through 172S type certificate was originally issued in 1955 and
amended up through
2000. The 172RG is a different type certificate, as is the 170 (came out
in 1948).


It is actually more complex than that. The 172RG and 172XP are appended to
the type certificate for the 175, of all things. There are a couple of other
172s also that are on the 175 certificate. I bet you could write a whole
book about it, and there are some people who are so interested in this kind
of thing that they would actually buy it.