Measurement of {ital np}{r_arrow}{ital pp}{pi}{sup {minus}} at 443 MeV

We have measured the relative differential cross section and spin observables for the reaction {ital np}{r_arrow}{ital pp}{pi}{sup {minus}} at 443 MeV. Our measurements have been compared with predictions of the model of Kloet and Lomon. Some of the variables show marked disagreement with predictions; for other variables there is surprisingly good agreement.