"Kristan Roberge" wrote:
Brett wrote:

"Steven P. McNicoll" wrote:
"Peter Stickney" wrote in message
...

Uhm - the Jetliner ended up getting chopped as well. After about 4
years of some of the oddest restrictions on flying it.


The Jetliner made it's last flight on November 23, 1956, more than
seven
years after it's first.

I believe if you look at page 62 of Aeroplane Monthly for February 2004:
"The Jetliner returned to Malton in September 1952. Authorised to be
flown
only as an observation and photographic platform for the CF-100 flight
tests, it flew for the last time on November 23, 1956."
Just over four years "of some of the oddest restrictions on flying it".

But its first flight was in 1949 is the point.

No the point in the original post was that 4 years of the airframes life
after program cancellation were essentially wasted. The XB-51 first flight
was in October 1949, it lost out in the Air Force competition that resulted
in a large Canberra (B-57) buy in March 1951 and the XB-51 program was
cancelled in November 1951. However, the first XB-51 airframe was utilized
in a large number of other test programs, generating "useful" data (and a
movie career, "Toward the Unknown", 1956), until it finally crashed in 1956.
The XB-51 program was terminated but the original investment in building it
wasn't wasted.