Recently I read an interesting account by a Bonanza owner who encountered an engine problem 11 hours after his aircraft came out of annual. The pilot had crossed the Sierra Nevada Mountains VFR at 12,500 feet westbound en route to the Bay Area, and was descending through 11,000 feet when he felt a bit of engine roughness. After doing an in-flight mag check and studying his JPI engine analyzer, his initial guess was that he had a bad spark plug in the #3 cylinder. But the problem got worse, and so after landing the pilot took the plane to a local mechanic and asked him to perform a compression check. Sure enough, the #3 cylinder measured 20/80 with air whistling past the exhaust valve. Clearly the cylinder was going to have to come off and the exhaust valve and seat replaced.So far, nothing unusual here. Happens every day.What I found interesting was how the owner reacted to this burned valve episode. Here's a brief excerpt of the email he sent to the A&P who he normally used to maintain the aircraft:
This is a companion discussion topic for the original entry at https://www.avweb.com/ownership/the-savvy-aviator-9-dont-go-overboard