As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CTR SCAVENGE PUMP LEAVES 1.1 IN CTR TANK. HISTORY INDICATES PREV LOW PRESS SW, AND RELAY REPLACED, TEST PASSES ON GROUND. SUSPECT FLAME ARRESTOR PARTIALLY CLOGGED OR DEBRIS COLLECTING ON FLAME ARRESTOR CAUSING LOW FLOW IN FLT & TIME OUT OF PUMP. NEED TO ACCESS TANK. COMPLETED SCAVENGE CK, REMOVED 1800LBS IN 39 MINS. SYS WORKS NORMAL. 2EA FSMC CARDS REPLACED & CTR WING TANK SCAVENGE SYS TEST OK.