As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRAILING EDGE FLAPS DID NOT EXTEND WHEN CONNECTED. FLAP GAUGE SHOWS LESS THEN UP FOR LEFT FLAP.<[01] PREFORMED FIM 27-51 TASK 840. FOUND F3 FLAP SKEW SENSOR INOP. REMOVE AND REPLACED F3 FLAP SKEW SENSOR IAW AMM 27-59-01.OPS CHECK GOOD THIS TIME. #142334.