What was found
AIRCRAFT WAS GROUNDED. PHX-AUS RETURNED PHX ACCOUNT SMOKE AND FUMES IN COCKPIT. EMERGENCY DECLARED, AIRCRAFT LANDED WITHOUT INCIDENT. PARAMEDICS WERE REQUESTED AS COCKPIT CREW REPORTED HEADACHE AND NAUSEA. ACCOMPLISHED J/C 26L00021001 AND J/C 26L0002002. CORRECTED APU OIL TO PROPER LEVEL, REPLACED SCAVENGE OIL PUMP PRESSURE SWITCH PER AMM 49-91-49 AND TIGHTENED LEAKING OIL LINES BNUTS AT OIL COOLER PER AMM 49-21-04 . ALSO COMPLETED J/C 26L00021004 OPERATIONS CHECK AND LEAK CHECK GOOD, NO SMELLS DETECTED.