1. Drained oil, Added 8 quarts of Aero shell W100 Plus oil. Replaced oil filter Tempest P/N AA48110-2. Open oil filter, no metal particles found.
2. Accomplished cylinder compression Test: No.1 (78/80), No.2 (78/80), No.3 (78/80), No.4 (74/80).
3. Cleaned, re-gapped and tested all spark plugs as required.
4. Verified AD 2017-16-11 is not applicable to this engine as it does not fall within the parameters of Lycoming Service Bulletin #632B, Tables 1&2. As determined by inspection of this engines maintenance records.
5. Ran engine, checked for leaks and verified its performance.
I certify that this engine has been inspected in accordance with FAR 43 App. 100HR inspection and was determined to be in airworthy condition. All maintenance performed on this Engine was conducted in reference with Lycoming Operator's Manual Model O-320 Series as revised, and the current regulations of the Federal Aviation Administration and is approved for return to service with respect to the work performed.