What was found
THE LANDING GEAR LEVER IN THE UP POSITON THE RED LIGHT LEFT GEAR DISAGREE COMPLY WITH QRH 14-6. REMOVED AND REPLACED LEFT S72 UP LOCK INDICATIOR SENSOR IAW B737 AMM 32-61-21 OPS CHECK PASSED.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
THE LANDING GEAR LEVER IN THE UP POSITON THE RED LIGHT LEFT GEAR DISAGREE COMPLY WITH QRH 14-6. REMOVED AND REPLACED LEFT S72 UP LOCK INDICATIOR SENSOR IAW B737 AMM 32-61-21 OPS CHECK PASSED.