==Operators==*United States Air Force==Specifications (XR-12B) ====See also====References==;Notes;Bibliography* Andrade, John M. "U.S.Military Aircraft Designation and Serials since 1909".
Bell R-12 (Model 48), kasneje Bell H-12 je bil enomotorni batnognani večnamenski helikopter, ki ga je razvil ameriški Bell Helicopter v 1940ih.