As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON TAKE OFF ROLL, TO/GA WAS PUSHED AT 40% N1, THRUST LEVERS ADVANCED TO TAKEOFF POWER, BUT FLIGHT DIRECTORS DID NOT APPEAR UNTIL AIRBORNE BY SELECTING HEADING AND V NAV. MAINTENANCE REPLACED #2 THRUST LEVER TO/GA SWITCH AND OPS CHECKED GOOD IAW AMM 22-11-39.