As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CYLINDER BARREL PEELING FOUND AFTER A LOW COMPRESSION TEST. THE BARREL PEELED IN AN AREA APPROX 2 INCHES WIDE. THE METAL CONTAMINATED THE ENG LUBRICATION SYS REQUIRING A COMPLETE TEARDOWN OF THE ENG. THIS CYL WAS INSTALLED AT ENG O/H ON 5/30/2009. (K)