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Unbelievable Compressions

The FARs require a differential compression test to be performed at every annual inspection, but it's a really terrible test that is neither reliable (i.e., repeatable) nor a valid indiction of cylinder health. In this webinar, Mike Busch A&P/IA demonstrates its shortcomings, explains its pitfalls, and emphasizes whay poor compression alone should never justify cylinder removal unless backed up by more trustworthy supporting evidence such as a borescope inspection. Savvy Aviation offers Professional Maintenance Services to owners of General Aviation aircraft, such as: SavvyMx (Professional Maintenance Management), SavvyQA (Expert Consulting), SavvyPrebuy, SavvyAnalysis (Engine Data Analysis) and Breakdown Assistance. Savvy also publishes a monthly newsletter with lots of interesting information for the general aviation enthusiast; subscribe to it at https://www.savvyaviation.com or text the word "Savvy" to 33777. This webinar was hosted by the Experimental Aircraft Association (EAA).