As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE WAS ASSEMBLED AND TEST CELL RUN 1-24-96. ENGINE WAS NOT INSTALLED UNTIL 5-6-96. WHILE INSTALLING ENGINE, PUSH ROD TUBES ON NR 4 CYLINDER WERE FOUND LOOSE. REMOVAL OF VALVE COVER AND CLOSE INSPECTION FOUND SPRING BROKEN IN 2 PLACES.