As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR UP DISAGREE ASSOCIATED WITH LOUD NOISE IN NLG AREA. NLG RED (DISAGREED). RESET GEAR HANDLE DOWN, NOSE GEAR LOCKED DOWN AT 160KIAS, VERY LOUD VIBRATION NOISE COMING FROM EXTENDED NOSEGEAR [ACFT RETURNED TO BTR AFTER T/O - EMERGENCY DECLARED] INSPECTED AND FOUND NLG UPLOCK PROX SENSOR OUT OF RANGE. ADJUSTED NLG UPLOCK PROX SENSOR IAW AMM 32-61-05. PREFORMED OPS TEST OF THE MLG EXTENSION/ RETRACTION SYSTEM IAW AMM TEMP. REVISION 32-30-00. OPS TEST GOOD.