What was found
ATB - CLIMBING ABOVE 12,000 FT TAT PROBE ECIAS MESSAGE WITH AN OVERHEAD TAT LIGHT ILLUMINATED AIRSPEED BUG FAILED ALONG WITH AUTOPILOT WE ALSO LOSS LNAV & VNAV AND AUTO THROTTLES ACCOMPLISHED AUTOFLIGHT BITE PER AMM 22 00 02 FOUND SYSTEM CODES 311661, 210401 AND 220401 ALL CODES DEFINE TAT FAILURE REMOVED & REPLACED TAT PROBE IAW MM 34 12 02/401 ACCOMPLISHED NECESSARY GROUND TESTS PER AMM 22 00 02 ALL TETS GOOD A/C OK FOR SERVICE EFF SOURCE REF 34 12 02 01A 005