S46 TRACON controller reported an aircraft initiated a go-around and was in conflict with an aircraf...

Attributes
ACN	1549802
Time
Date	201806
Local Time Of Day	1801-2400
Place
Locale Reference	S46.TRACON
State Reference	WA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B777-200
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Medium Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 91
Flight Phase	Final Approach
Route In Use	Visual Approach
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Developmental
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict

Narrative:

A corporate jet went around at on a visual approach 14R. A B777 was on an ILS 16L approach to an adjacent airport. Earlier in the week (2 days prior); I reported the go-around line as not working properly. When called for the go-around; there was only a single tone and no voice. The departure controller shouted go-around to the room; and it was the only reason I knew. This was a really scary event and we should not have simultaneous approaches to these airports no matter how good the weather is. These planes were at the same altitude and only .67 NM. This facility should not use this procedure because of this reason. These airports should be sequenced as one. This is way too close and we should not wait until two planes collide to change this.

Original NASA ASRS Text

Title: S46 TRACON Controller reported an aircraft initiated a go-around and was in conflict with an aircraft on approach to a nearby parallel final airport and the line to coordinate the go-around was not working.

Narrative: A Corporate jet went around at on a Visual Approach 14R. A B777 was on an ILS 16L approach to an adjacent airport. Earlier in the week (2 days prior); I reported the go-around line as not working properly. When called for the go-around; there was only a single tone and no voice. The Departure Controller shouted go-around to the room; and it was the only reason I knew. This was a really scary event and we should not have simultaneous approaches to these airports no matter how good the weather is. These planes were at the same altitude and only .67 NM. This facility should not use this procedure because of this reason. These airports should be sequenced as one. This is way too close and we should not wait until two planes collide to change this.

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.

S46 TRACON controller reported an aircraft initiated a go-around and was in conflict with an aircraft on approach to a nearby parallel final airport and the line to coordinate the go-around was not working.