What was found
AIR TURN-BACK, NR 1 ENG OIL PRESS BELOW 20 PSI, OIL TEMP NML. RETURNED TO PHX PER MX. REPLACED OIL PRESS INDICATOR PER BMM 79-32-02 P401 LK AND OPS CK GOOD. OTHER PARTS CHANGED, UNIT, LUBRICATING. A/C HAS EXPERIENCED SEVERAL OIL PRESS FLUX PROBLEMS, 3 OIL PRESS TRANSMITTERS AND A PRESS INDICATOR HAVE BEEN CHANGED SINCE 11 AUG 99.