What was found
NOTED ODOR IN COCKPIT FOUND CABIN PRESS CB POPPED. APPROX 30 SEC LATER THE RT ELEC PWR FEED, 3 CB POPPED NOTICED PRESSURE MODE SWITCH LIGHTS INOP. HAD TO USE MANUAL CHERRY PICKER TO DESEND CABIN ON DESCENT. OPENED RT C/B PANEL. NOTICED STRONG BURNING ODOR DISCONNECTED AND REMOVED C/B PANEL. FOUND BUSS BAR FROM C/B 46 TO 34 BAD LOOSE CONNECTION CAUSING ARCING AND EXCESSIVE HEAT BURNING C/BS 28, 34, AND 46. INSTALLED SERVICEABLE C/B PANEL FROM 365QS. RAN A/C TO OP'S CHECK ALL APPLICABLE SYSTEMS. OPS CHECK GOOD REF MM 24-60-20.