What was found
DURING TAKEOFF ROLL, PASSING THROUGH 80 KNOTS, LT THRUST REVERSER AMBER UNLOCK LIGHT ILLUMINATED. DISCONTINUED TAKEOFF AND DISARMED AUTOBRAKES. ACFT MAX SPEED 100 KNOTS. R & R NR 1 ENGINE LT SLEEVE STOW, LOCK SENSOR THRUST REVERSER OPS NORMAL IAW AMM 78-36-01.