As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3270 DISC: ON TAKEOFF, GOT REV 2 UNLOCK GOING THROUGH 40KTS @ FLEX 41. STOPPED THE AIRCRAFT NO FACTOR BRAKES 275/300 180/165. R & R #2 ENG THRUST REV HCU 4101KS. ALL TESTS OK. MCO/PLAC REMOVED. ATO - AT 45KTS DUE TO A #2 ENGINE THRUST REVERSER UNLOCKED MESSAGE. DEFERRED #2 ENGINE THRUST REVERSER PER MEL AND CONTINUED. (LP: 7480934)