What was found
DURING THE MONTH OF NOVEMBER, THERE WERE SEVEN CTL-32 NAV CONTROL HEADS, P/N 622-6521-016, THAT WERE REMOVED DUE TO PART OR ALL OF BACKLIGHTING BEING INOPERATIVE. THE PARTS TIME SINCE OVERHAUL WERE 6,794.4 HRS FROM N NR 79SK NR 1 SIDE; 6,794.4 HRS FROM N NR 79SK NR 2 SIDE; 6,692.1 HRS FROM N NR 81SK; 5,952.7 HRS FROM N NR 831SK; 6,499.9 HRS FROM N NR 841SK; 5,741.2 HRS FROM N NR 85SK; AND 6,440.0 HRS FROM N NR 881SK. WHEN SENT OUT FOR REPAIR, LAMPS WERE REPLACED, AND THE UNITS WERE RETURNED TO SERVICE. THIS GIVES AN MTBUR OF 6,416.7 HOURS. REF: OPERATOR CONTROL NRS S2YA960042 AND 97ZZZX1806 THROUGH 97ZZZX1810.