Delivered to DFVLR - Deutsche Forschungs- und Versuchsanstalt für Luft- und Raumfahrt as D-CMET in 1976 who were renamed to DLR - Deutsches Zentrum für Luft- und Raumfahrt in 1990. Later converted to a Falcon 20E-5. Used as a flying laboratory for environmental and climate research.