What was found
(CAN) DURING THE QUICK ENGINE CHANGE BUILDUP, AN IRREGULAR NUMBER OF TEETH WERE NOTICED ON BOTH END OF THE HYDROMECHANICAL METERING UNIT, HMU, POWER LEVER,CMM IPL 73-21-41-03-060. THE TEETH PATTERN ON THE LEVER DIDN`T MATCH THE COUNTERPART SERRATED WASHER, CSP342-1, TEETH PITCH RATE. THE LEVER WAS MEASURED AS HAVING A DIFFERENT PITCH RATE OF SERRATIONS IAW THAN THE SERRATED WASHER, WHICH WAS MEASURED AS HAVING A PITCH RATE OF 32 IAW INCH. THE HMU CONDITION LEVER WAS ALSO CHECKED AND SERRATION FOUND AT A PITCH OF 32 IAW INCH. THE HMU HAS BEEN REJECTED AND WILL BE SHIPPED BACK TO THE VENDOR.