What was found
FLAPS FAILED AT 20 ON APPROACH, QRH FOLLOWED WITH UNEVENTFUL LANDING. REMOVED AND REPLACED POWER DRIVE UNIT IAW AMM SYSTEM OPERATIONALLY CHECKED GOOD.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLAPS FAILED AT 20 ON APPROACH, QRH FOLLOWED WITH UNEVENTFUL LANDING. REMOVED AND REPLACED POWER DRIVE UNIT IAW AMM SYSTEM OPERATIONALLY CHECKED GOOD.