As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 427, BOS-BWI. RETURNED TO FIELD. FUEL 2 LOW LVL; SUSPECTING THE MOTIVE FLOW RETURN LINE FROM EDP BACK TO BE BLOCKED AND PREVENTING COLLECTOR TANK FROM FILLING PROPERLY. REMOVED AND REPLACED PER LMM 73-00-00 REMOVAL 001 SUBTASK 73-00-00-440-001. ALL LEAKS CHECKED NORMAL ALL INDICATIONS NORMAL.