Andrewarles - you could do what I've done - use Database Explorer (on the File menu), choose the Airlines table, and change the entry for RA (in the C2 column) so that it refers to RAE (in the C3 column), and company name of Régional Compagnie Aérienne Européenne (in the CN column).
For puritans, this is a workround, not a solution, but if you're rarely going to see Nepalese flights and often going to see Regional Airlines flights, it will work fine.
Users in Nepal should probably not do this!
HTH
Rod