What was found
FLIGHT 1887, EN-ROUTE AT FL 200, NR 2 ENG OIL PRESS WAS 34 PSI, WITH OIL TEMP 150 & IDG TEMP 153. THE NR 2 ENG OIL TEMP & IDG WERE FLASHING. THE FLIGHT RETURNED & LANDED WITHOUT FURTHER INCIDENT. REPLACED THE NR 2 ENG LUBRICATION UNIT.