scan from the NK collection. - A Convair 640 was a rare sight in European skies, besides Martinair with two aircraft only SATA of Switzerland operated one. This aircraft here started as HB-IMC with Swissair and was converted with Dart engines for Martinair in 1967. 50 years later, it was still active and noted as XA-UNH with Aeronaves TSM, a Mexican cargo operator.
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