The O(D-1,P-3) + CH3F reaction has been investigated using universal crossed molecular beam methods. The following reaction channels: HF + H2CO, H + CHFOH/CFH2O, and H-2 + CFOH/CHFO, have been observed in a single set of experiments. Time-of-flight spectra have been measured for products from these channels. Product angular distributions have been determined for these product channels, indicating that the dominant dynamical pathway for the reaction is the insertion mechanism. Relative branching ratios of the observed reaction channels have also been estimated. Experimental results in this work indicate that the HF formation channel is the dominant reaction pathway. This study provides a rather complete dynamical picture of the multiple channel O + CH3F reaction. It is believed that the O(D-1) reaction is playing a major role in this experiment since it is energetically more favorable.