As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DESCENDING THROUGH FL 220 AT APPROX 230 KIAS, RECEIVED RED LANDING GEAR LIGHT FOLLOWED BY A RUMBLE SOUND AND THE AMBER HYD PRESS ON MESSAGE.//////////REMOVED FAILED PART NO: 6341356-1-1 REMOVED SERIAL NO: NSN. INSTALLED NEW UPLOCK HOOK ASSEMBLY IAW CESSNA 5258 MM CH.23-31-04. OPS CHECKS GOOD.