As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SIPPLEMENTAL KNOCKING SOUND FROM UNDERSIDE OF AIRCRAFT ON TAKEOFF. RIGHT LANDING GEAR INDICATION FLUCTUATING FROM UP/TRANISIENT "TRANSFERRED TO NRWC 653-ORD-04231"/ C/A- REMOVED AND REPLACED R/H MLG UPLOCK BOX IAW AMM 32-33-10. OPS CHECK GOOD. COULD NOT DUPLICATE KNOCKING.