As someone with a great deal of interest in Air Cargo Logistics, I have two responses to this.
On one level (that of an enthusiast), the idea of a CRJ-F is a cool idea. It would allow "all jet" operations for cargo.
HOWEVER, on an economically feasibility level, there are major problems with this. For one, cargo is often not time sensitive. If it is, however, it is usually not time-sensitive to within an hour or so. This is the only difference in timing that you would get from a CRJ in comparison to an ATR, for example, even on its longest feasible routes (~600nm or so).
By extension, regional jets have higher cost per ASM -CASM - (or, in the case of cargo, cost per available ton mile - CATM) than their turboprop counterparts. In pax service, this is made up for because jet aircraft tend to produce more revenue than props, partly because they stimulate pax traffic to some extent, and because people are willing to pay slightly more, in general, for RJ
service over propjets.
However, cargo cares little about whether it gets there by prop or by jet, and the time difference between an RJ
and an ATR-72 is neglible for this cargo transportation. Add to that the operating restrictions (such as runway condition, etc.) that RJs have over aircraft such as the EMB-120 and the ATR-72 utility aircraft, and the advantage of RJs in freight service over aircraft like the ATR-72, become a disadvantage.
FLY DELTA JETS
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[Edited 2004-03-15 06:09:28]