What was found
INSPECTION TYPE:N/AON APPROACH TURNED ENG & WING ANTI-ICE ON. SHORTLY AFTER HAD A FAINT SMELL IN COCKPIT. ON FINAL APPROACH NOTICED A FAINT VISIBLE SMOKE IN COCKPIT OVERHEAD LIGHT. SEEMED TO START TO DISSIPATE AFTER ANTI-ICE OFF.T/S C/O IAW TSM 21-20-00 PG 117. APU OIL LEAK FOUND AT OIL TEMP FITTING. LINE TORQUED IAW SPECIFIED VALUE PER A300-600 AMM 20-23-12 AND NO MORE LEAK PRESENT. ESC DUCT CLEANING PROC. C/O IAW AMM 21-51-00 PB 301. WATER SEPARATOR COALESCER BAGS REPLACED IAW AMM 21-51-16 PB 301. A/C OK TO CONTINUE SERV.