Spartan aircraft were often seen in the UK during the 1960s and 70s as they plied their way from Canada to the third world and back on survey contracts. This C-47 was acquired in 1956 and served until 1969 when it became N19721. The aircraft was seen as such at Winnipeg (CYWG) in October 1973, still carrying the same roof antennae but with a birdie (or 'bomb') under the belly instead of the radome used here.

I first snapped this DC-3 when it was CF-ICU with Spartan Air Services. That was at Gatwick/UK on 04Aug63. Here it is with Continental Aviation of Oklahoma and still doing survey work. Note the 'bomb' under the fuselage and roof antennas for dual ADF used for cross-checking position in the pre-GPS era. Last known stored for spares use with the Vintage Flying Museum at Meacham Field, Fort Worth, TX since 2010.

K25 slide scan. Built 1944 for USAAF. Civilianized as NC21919 1946. Further registrations CF-ICU, N19721. Baron Aviation 1974, stored Rolla, MO by 1991 becoming derelict, fuselage only still extant 2010.