This is one in an ongoing series of articles on Winglets that will summarize past airlines and other operators of CRJ aircraft that are no longer in existence. ALMA de Mexico – Aerolíneas Mesoamericanas, S.A. de C.V. IATA Code: C4 ICAO Code: MSO Callsign: ALMA Low Cost Mexican Airline Operated 2006- 2008 Number of CRJs Operated: …