As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NOSE GEAR STAYED DOWN AND LOCKED WHEN GEAR WAS SELECTED UP. GEAR DISAGREE RECEIVED APPROX 10 SECONDS AFTER GEAR UP SELECTION. RETURN TO BNA. COMPLIED WITH M ACTION OF MEL 32-30-01. ADJUSTED PROX SENSOR S23 AND REMOVED AND REPLACED PSEU.