What was found
FLAPS FAILED TO EXTEND FROM 30 TO 40 / [01] R&R?D FLAP POWER DRIVE UNIT PER AMM 27-51-51
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FLAPS FAILED TO EXTEND FROM 30 TO 40 / [01] R&R?D FLAP POWER DRIVE UNIT PER AMM 27-51-51