Rainbow Contrails flight2000it 6 years ago Rainbow ContrailsA very cold day in December produced both shots here. Note that the rainbow effect is associated with the condensation trailing behind the wing surfaces, and not with the main vapor trails from the engines. Unbelievable BOEING 737 DEPARTURE in front of a RAINBOW with 2 FOXES running to the airport– FS2004 RainbowAirbus A321 RAINBOW CROSSWIND Landing at Düsseldorf – Germania