What was found
AHEAD HAS REPORTED FAILURES OF THE TCQ QUICK DISCONNECT BUTTON. REMOVED THRUST CONTROL QUADRANT REF. E175 AMM RASK 76-11-01-000-801-A. STARTED INSTALLING THRUST QUADRANT REF. E175 AMM TASK 76-11-01-400-801-A STEPS 1-7D. TEST OF TCQ INSTALLATION AND FUNCTIONAL TEST OF THRUST REVERSERS GOOD. COMPLETED INSTALLATION OF THRUST CONTROL QUADRANT IAW E175 AMM 76-11-01-400-801-A STEPS 7.E. AND 7.F.(END), AMM 22-11-00-710-710-801-A, TOGA SWITCH OPERATIONAL TEST GOOD. THIS COMPLETES TO # 202310250658. AIRCRAFT REMAINS CAT III QUALIFIED, AIRCRAFT PLACARD READS CAT III, MAINT CONTROL NOTIFIED.