What was found
1.25 HOURS INTO FLIGHT, RECEIVED A MAIN CARGO EICAS. COMPLIED WITH QRH. INDICATOR WENT OUT. DECENDING THRU FL220. PRESSURIZATION NORMAL THOUGHOUT. FOUND DEBRIS ON THE SENSOR TARGET S892. REMOVED THE DEBRIS. INSPECTION CHECKED GOOD. PERFORMED PSEU BITE, ALL MAIN CARGO DOOR SYSTEM TESTS GOOD. NO FAULTS, NO STATUS MESSAGE, ANNUNCIATOR LIGHT TESTED GOOD IAW FIM 32-09, FT 809. OKAY FOR SERVICE.