As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: PILOT REPORTS FLT DIRECTORS BOTH CA/FO DISAPPEAR WHEN TOGA MODE/SWITCH PRESSED FOR TAKEOFF. COME BACK ON AT 1000 FEET. MAINTENANCE ACCOMPLISHED DFCS BITE FOUND MAINT MSG 22-11210. PERFORMED TASK FIM 22-14-00. FOUND NO FAULTS AT INITIAL EVALUATION. FCC CHECKS NORMAL. PERFORMED HUD OPERATIONAL TEST IAW AMM 34-36-00, TEST PASSED IAW FIM 22-14-00.