Pdx TRACON controller described near midair collision event; primary radar traffic was issued; inbou...

Attributes
ACN	827613
Time
Date	200904
Local Time Of Day	1201-1800
Place
Locale Reference	PDX.Airport
State Reference	OR
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Make Model Name	Brasilia EMB-120 All Series
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Person 1
Function	Approach
Experience	Air Traffic Control Radar 25
Events
Anomaly	Conflict NMAC
Miss Distance	Horizontal 100 Vertical 100

Narrative:

Air carrier #120 was following crj on a visual approach to runway 10L at pdx. Traffic was issued on a primary target; 'traffic 12 o'clock position; 4 miles opposite direction; primary target last reported by crj about 5500 ft.' air carrier X said he was looking for traffic and not in sight. Then the pilot said he had to turn to avoid the traffic. The pilot was shaken up and called the TRACON after landing and told the supervisor that he had to turn 45 degrees to avoid traffic that was 100 ft away.' 'the traffic call saved my butt' was what he told the supervisor. We tried tracking the target but lost him behind the west hills below radar coverage. Class B airspace is needed and overdue at pdx.

Original NASA ASRS Text

Title: PDX TRACON Controller described NMAC event; primary radar traffic was issued; inbound air carrier executed evasive action; reporter suggesting establishment of Class B to prevent additional occurrences.

Narrative: Air Carrier #120 was following CRJ on a visual approach to Runway 10L at PDX. Traffic was issued on a primary target; 'Traffic 12 o'clock position; 4 miles opposite direction; primary target last reported by CRJ about 5500 FT.' Air Carrier X said he was looking for traffic and not in sight. Then the pilot said he had to turn to avoid the traffic. The pilot was shaken up and called the TRACON after landing and told the Supervisor that he had to turn 45 degrees to avoid traffic that was 100 FT away.' 'The traffic call saved my butt' was what he told the Supervisor. We tried tracking the target but lost him behind the west hills below radar coverage. Class B airspace is needed and overdue at PDX.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Pdx TRACON controller described near midair collision event; primary radar traffic was issued; inbound air carrier executed evasive action; reporter suggesting establishment of class B to prevent additional occurrences.