1. Drained oil. Added 6 quarts of Aero shell W 100 Plus oil. Replaced oil filter Tempest P/N AA48110-2. Opened oil filter, no metal particles found.
2. Accomplished cylinder compression Test: No.1 (78/80), No.2 (78/80), No.3 (72/80), No.4 (78/80).
3. Cleaned, tested and re-gapped all Spark Plugs as required.
4. Ran engine and checked for leaks and its performance.
All maintenance performed on this Engine was conducted in accordance with Lycoming Operator's Manual Model O-320 Series, and the current regulations of the Federal Aviation Administration and is approved for return to service with respect to the work performed.