ATA 71

A word of caution, when ordering and installing the oil filter for your engines: Due to the shorter length of the filter, the filter for the TPE331 can be inadvertently installed in the TFE731 engine. Under certain conditions, the oil bypass may open allowing unfiltered oil to circulate through your engine. We recommend that you check both the size and the part number of the filter that you are using. The correct filter part number is 3070945-1.