Delivered to Wardair Canada as CF-ZYP in 1969. Reregistered as C-FZYP by 1975. To Montana Austria as OE-IDA in 1978. Seized by the US Justice Department and stored at Davis Monthan AFB in 1981. To the USAF as C-137C 85-6973 in 1985. Converted to an E-8C in 2000 and reserialled as 01-2000 in 2003.