Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Conflict NMAC
Air Traffic Control Provided Assistance; Flight Crew Took Evasive Action
Human Factors
Visual RWY 15; 3;500 MSL; pop up traffic; TCAS TA; Tower sounded very concerned; TCAS RA 'Climb' to go around. Tower notified approach; vectors provided to RWY 8 ILS. Good work by ATC. Until another TCAS approaching SILEX; this time 'descend' then I saw a C-150 quite close; then behind. Landing uneventful.
Pilot reported airborne conflict twice while attempting to land at BUR.