What was found
ABOUT 45 MIN INTO FLIGHT, A/T LIM ANNUNCIATED AND VNAV DISCONNECTED. REF PREVIOUS WRITE-UPS ON LOG PAGE 12089346 AND 12089355. WE ALSO LOST ETA AND FUEL ESTIMATES ON ALL FMC PAGES. AT 15,000 FEET ON DESCENT, ALL NAV FUNCTIONS AND FMC INDICATIONS RETURNED TO NORMAL FOR THE REMAINDER OF THE FLIGHT. GROUNDED - YES. REF TSR704688 REMOVED AND REPLACED TAT PROBE REF B737-800 AMM 34-21-06, OPS CHECK GOOD. ACCOMPLISHED LEFT AND RIGHT FMC BITE REF FIM34-61 TASK 801, OPS CHECK GOOD. ALSO ACCOMPLISHED FIM 34-61 TASK 824 ADIRS INPUT FAULT ISOLATION, NO FAULT FOUND. ACCOMPLISHED FIM 34-21 TASK 801 IRS BITE, NO CURRENT FAULTS.