What was found
DURING CONFIGURATION TO LAND AFTER PLACING LANDING GEAR LEVER DOWN ALL LIGHTS REMAINED ILLUMINATED ON GEAR ANNUNCIATOR PANEL, REDS AND GREENS. RECYCLED GEAR IAW QRH AND AGAIN ALL LIGHTS REMAINED ILLUMINATED. RECYCLED AGAIN AND GOT A SAFE 3 GREEN INDICATION AND LANDED UNEVENTFULLY. TROUBLESHOT PER MM 32-61-001-1, NEEDS LANDING GEAR ACCESSORY UNIT P/N 65-60211-23 NIS GTF/LINE. REMOVED AND REPLACED LANDING GEAR ACCESSORY UNIT PER FEDEX 727-200 M/M 32-09-121-4. PERFORMED TEST OF LANDING GEAR ACCESSORY UNIT PER FEDEX 727-200 M/M 32-09-122-5. TEST CHECKS GOOD.