Tianjin Air Cargo has transitioned to an all-737NG freighter operator after removing its final 737 Classic from service, and is looking at growing its freighter fleet. Tianjin Air Cargo retired the 1998-vintage 737-400SF (29914) from its fleet on Dec. 1 and sent it to Haikou (HAK), joining the carrier’s other 737-400SF (29915) that has been […]