Whilr in A&P school 1953/1954 we received a half dozen R1820-102 engines from EAL. They had merged or taken over Colonial airlines and we replacing the engines on the ex-Colonial DC-3 with G202 Models.
Went to EALin 1964 and old timers talked of the Wrights, never heard any say anything about Pratts on DC-3.
Those engines the school got we're an eye-opener. Unlike typical school engines that had been taken apart and reassembled by previous classes ans were pristine and clean, these
engines were loaded with filthy oil and sludge. Our school coveralls never looked the same again but kit was great experience,