As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR DISAGREE WARNING MESSAGE ON TAKEOFF. ASSOCIATED MESSAGE: WOW INPUT CAUTION, WOW OUTPUT FAIL STATUS, NOSE DOOR POEN WARNING. A/C RETURNED TO DEPARTURE AFTER TAKEOFF, EMERGENCY DECLARED. TROUBLESHOOTING FOUND BOTH NLG DOWNLOCK PROXIMITY SENSORS BROKEN. R & R LT & RT NLG DOWNLOCK PROXIMITY SENSORS IAW AMM 32-61-05. OPS CHECKED GOOD. NO FURTHER DEFECTS NOTED AT THIS TIME.