As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT APPLIED POWER TO RIGHT ENGINE FOR PRE-FLIGHT CHECK. ENGINE WOULD ONLY TURN UP TO 26 INCHES MAN/PRESSURE. FOUND TURBO HAD LOCKED UP. INSTALLED OVERHAULED TURBO, ENGINE GROUND RAN, CHECKED NORMAL. AIRCRAFT TEST FLOWN, ALL CONDITIONS NORMAL.