Enroute controller described a near midair collision event between an IFR air carrier arrival and a ...

Attributes
ACN	1111647
Time
Date	201308
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.ARTCC
State Reference	US
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent
Route In Use	Other Instrument Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	VFR
Person 1
Function	Enroute
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Conflict NMAC

Narrative:

I was informed that a cessna 172 filed a near midair collision. I am now filing a report as well. A B737 was descending on [a STAR] landing ZZZ. The C172 was VFR southbound between ZZZ and [an airspace fix] at 105. Traffic was called to both aircraft about 7 miles apart. The B737 had the traffic on the TCAS and I believe the VFR said; 'roger.' the C172 said he was starting his VFR descent. Tower called yelling and arguing pointout approved. During the call; I heard the B737 say that he was responding to a RA. Later the C172 apologized for losing sight or slow descent; I am not sure which. I should have never answered the line. I should have continued the traffic calls or stopped the B737.

Original NASA ASRS Text

Title: Enroute Controller described a NMAC event between an IFR air carrier arrival and a VFR overflight; the reporter acknowledging he/she should have issued traffic in lieu of answering the landline.

Narrative: I was informed that a Cessna 172 filed a NMAC. I am now filing a report as well. A B737 was descending on [a STAR] landing ZZZ. The C172 was VFR southbound between ZZZ and [an airspace fix] at 105. Traffic was called to both aircraft about 7 miles apart. The B737 had the traffic on the TCAS and I believe the VFR said; 'Roger.' The C172 said he was starting his VFR descent. Tower called yelling and arguing pointout approved. During the call; I heard the B737 say that he was responding to a RA. Later the C172 apologized for losing sight or slow descent; I am not sure which. I should have never answered the line. I should have continued the traffic calls or stopped the B737.

Data retrieved from NASA's ASRS site as of July 2013 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.

Enroute controller described a near midair collision event between an IFR air carrier arrival and a VFR overflight; the reporter acknowledging he/she should have issued traffic in lieu of answering the landline.