What was found
AT 18,000 FT, NR 1 OIL TEMP FLUXUATED BETWEEN 100 AND RED LINE AT LOWER ALTITUDE, NORMAL UNTIL DECENT, THEN FLUXUATES BETWEEN NORMAL TO THE TOP OF GREEN ARC AND RED LINE. INSPECTED NR 1 ENGINE, FOUND LOOSE GROUND AT JUNCTION, TIGHTENED AND CLEANED GROUND TERMINAL AND GROUND RAN ACFT. OPS CHECKED GOOD AT THIS TIME, OK FOR SERVICE.