Kalitta Charters II (KII, Detroit Willow Run) has added a maiden B737-300(F) to its fleet, ch-aviation research has revealed.

Formerly XA-AJA with Mexican freight specialist Estafeta Carga Aérea (E7, San Luis Potosí), N331CK (msn 23747) was recently added the Michigan-based carrier's books where it joins six B727-200(F)s, three B737-400(F)s, two DC-9-10Fs, and one DC-9-30F all of which are deployed on cargo flights.

Kalitta Charters II is the sister carrier to Kalitta Air (K4, Detroit Willow Run) which also specializes in freight albeit using widebody B747 and B767 equipment.