As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 MAIN TANK FQIS FAILED A SYSTEM TEST IAW AMM 28-41-00-730-801, & NG-28FCD-18088-1. ACFT GROUNDED. THE NR 2 TANK UNIT AND NR 9 TANK UNIT WERE OUT OF LIMITS. REPLACED IAW AMM 28-41-21/401. TANK AND COMPENSATOR UNITS TESTED FOR THE NR 1 TANK PASSED IAW AMM 28-41-21-710-801.