What was found
NR 1 MAIN FUEL TANK SHOWED A 400 LB READING LESS THAN NR 2 TANK OVER A PERIOD OF 30 MINUTES BOTH TANKS STAYED EVEN WHILE CENTER TANK WAS IN USE. GROUNDED - YES. ACCOMPLISHED TANK AND COMPENSATOR UNITS TEST REF AMM 28-41-21-710-801. FOUND NR 2 MAIN FUEL TANK PROBE F2 (42.65) AND COMPENSATOR F15 (59.41) OUT OF LIMITS. REMOVED & REPLACED FUEL PROBE F2 AND COMPENSATOR F15 REF AMM 28-41-21-400-801. ACCOMPLISHED FQIS SYSTEM TEST REF AMM 28-41-00-730-801. FQIS PROCESSOR FOR NR 1 TANK SHOWS TOTAL CAP OF 397.0 PF. FQIS PROCESSOR FOR NR 2 TANK SHOWS TOTAL CAP OF 397.5 PF. TOTAL CAP AT NR 2 BUSSING PLUG SHOWS 397.2 PF.