What was found
ENGINE OIL SMELL IN COCKPIT, ONLY DURING TOP OF DESCENT TO LANDING, CABIN OK. TRANSFERRED TO NRWC 661-ORD-02242. COMPLIED WITH RR FIM 72-00-00-810-814 OBSERVED FAULT, OIL OR UEL SMELL, HAZE IN THE CABIN & ETN EM-72-034 ENG ODOR EVENT. TROUBLESHOOTING DISCREPANCY TRANSFERRED TO AML 3806131 ITEM 1. REF AML 3806129 NR 1 ENG OIL SMELL IN COCKPIT ONLY. DETERMINED TO BE FROM ENG NR 1. ENG 1 REQUIRES CHANGE. R&R NR 1 ENG IAW WC 71-000-00. OPERATIONS & LEAK CHECKED GOOD, NO DEFECTS NOTED. ENG ACC FIRE DETECTOR PN 3601133500230C90M, SN 217282. COMPLIED WITH DECONTAMINATION OF AIR CONDITIONING SYS IAW AMM 21-20-00, NO DEFECTS NOTED.