The Nord 262 was originally designed as a DC-3/C-47 replacement. Only a handfull are still operating.
The Convair has not gone. There are still a few converted Convairs hauling freight
in far flung corners of the globe.
The SAAB 90 Scandia was an attempt.
The PZL Mielec MD-12 was an unsuccessful design. The twin-engine PZL CCS-12 didn't get beyond the prototype stage.
The CASA 201 Alcotan, or perhaps even better, the CASA C-207 Azor could be considered serious attempts to replace the venerable DC-3.
The Ilyushin IL-12 could be considered a successful replacement.
Last edited by evansb; 18th Aug 2012 at 00:16.