Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Situational Awareness
ATC Issue All Types; Conflict NMAC
Flight Crew Took Evasive Action
Human Factors; Procedure
We were at assigned altitude of 13;000 FT. An aircraft began a fast descent towards us. At 500 FT away from us; we got an RA to climb. We began a climbing/ fairly steep turn to miss him. It was close enough that we saw his lights even though IMC. After calling ATC on the ground; we were told that he was given an approach clearance into a satellite airport. This should not have happened.
A320 Captain reported an NMAC with another aircraft in the vicinity of PDX airport.