As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON CONFIGURING A/C FOR LANDING, LEFT HYD QUANTITY WENT TO 3 QUARTS AND REMAINED THERE. RAN QRH AND LANDED NORMALLY. DID NOT START APU AS PER QRH CHECKLIST. FOUND HYD LINE B NUT LOOSE ON LT ENG HYD CASE DRAIN FILTER OUTBOARD SIDE. RETORQUED SAME PER AMM. PERFORMED LEAK CK. ALL NML.