on 24 february 1927, the 60000 was sent to the atchison, topeka and santa fe railroad. testing was performed on the pecos division between clovis and belen, new mexico. as with the cb&q, the at&sf compared the performance of the 60000 with that of its own power in the form of two 3800-class 2-10-2s. once more the 60000 demonstrated superior fuel consumption than the locomotives of the host railroad.