McCauley model1-C160/DTM 7557 mi S/N- EJ037. Performed 100 hour/ANNUAL inspection on prop. Removed spinner and inspected hub and back plate. No defects found. I certify that this propeller was inspected in reference to Cessna 172 100 hour/ANNUAL inspection checklist and was found to be in an airworthy condition and is approved for return to service at this time.