A11 controller reported turning an aircraft on to final with traffic ahead for another runway. Addit...

Narrative:

Training in progress on final west with developmental who is close to qualification. Trainee issued a 040 vector to aircraft X to intercept runway 7L localizer and descend to 4;000; a second [aircraft] was on a south downwind for runway 7R. Aircraft X was instructed to reduce speed to 210 knots; and issued traffic on primary only traffic (no altitude indicated); '12 o'clock; 4 miles; southbound; altitude unknown'. Aircraft X joined the 7L localizer and reported they had the no-transponder aircraft in sight and it appeared to be a cessna and passed them by 500 feet. Aircraft X was issued traffic on the 7R [traffic]; which was subsequently reported in sight; and also advised they would be filing a near miss on the no-transponder aircraft.non-transponder equipped aircraft are common and plentiful in and around anchorage TRACON's airspace; and mostly operate low-level; below 1;500 feet AGL. This incident would not have happened if either (1) the non-transponder equipped aircraft were talking to us; (2) the aircraft had an operational mode C transponder; or (3) anc's class C airspace extended out to protect the runway 7L/7R final approach courses (and runway 33/15 departure/arrival corridor). This will continue to happen until the airspace around anc is changed to protect from VFR aircraft not talking to ATC; with or without a transponder; from flying through the final approach course.

Original NASA ASRS Text

Title: A11 Controller reported turning an aircraft on to final with traffic ahead for another runway. Additional traffic was issued to a non-transponder equipped aircraft. Pilot observed both aircraft and advised reported that they would be fling a Near Mid Air Collision report on the unknown aircraft.

Narrative: Training in progress on Final West with developmental who is close to qualification. Trainee issued a 040 vector to Aircraft X to intercept Runway 7L localizer and descend to 4;000; a second [aircraft] was on a south downwind for Runway 7R. Aircraft X was instructed to reduce speed to 210 knots; and issued traffic on primary only traffic (no altitude indicated); '12 o'clock; 4 miles; southbound; altitude unknown'. Aircraft X joined the 7L localizer and reported they had the no-transponder aircraft in sight and it appeared to be a Cessna and passed them by 500 feet. Aircraft X was issued traffic on the 7R [traffic]; which was subsequently reported in sight; and also advised they would be filing a near miss on the no-transponder aircraft.Non-transponder equipped aircraft are common and plentiful in and around Anchorage TRACON's airspace; and mostly operate low-level; below 1;500 feet AGL. This incident would not have happened if either (1) the non-transponder equipped aircraft were talking to us; (2) the aircraft had an operational mode C transponder; or (3) ANC's class C airspace extended out to protect the Runway 7L/7R final approach courses (and Runway 33/15 departure/arrival corridor). This will continue to happen until the airspace around ANC is changed to protect from VFR aircraft not talking to ATC; with or without a transponder; from flying through the final approach course.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1339587
Time
Date	201603
Local Time Of Day	1801-2400
Place
Locale Reference	A11.TRACON
State Reference	AK
Environment
Light	Night
Aircraft 1
Make Model Name	Medium Large Transport
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	Vectors
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	Cruise
Route In Use	None
Flight Plan	VFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 2
Events
Anomaly	Conflict NMAC

A11 controller reported turning an aircraft on to final with traffic ahead for another runway. Additional traffic was issued to a non-transponder equipped aircraft. Pilot observed both aircraft and advised reported that they would be fling a near mid air collision report on the unknown aircraft.