What was found
PHX-IAH - AIR TURNBACK DUE TO NR 2 ENGINE OIL FILTER BYPASS LIGHT ILLUMINATING. AC RETURNED TO PHX AND LANDED WITHOUT FURTHER INCIDENT. MX FOUND MAIN OIL FILTER CONTAMINATED WITH MAGNETIC SHAVINGS AND CHIPS. REMOVED AND REPLACED NR 2 ENGINE. AC RETURNED TO SERVICE. FURTHER INFORMATION UPON ENGINE/GEARBOX TEARDOWN REPORT. TEARDOWN REVEALED OIL TUBE MISALIGNED CAUSING OIL PUMP FAILURE. (Z)