Sea/S46 controllers and flight crew members described a go around event at sea that resulted in a lo...

Attributes
ACN	901345
Time
Date	201007
Local Time Of Day	0001-0600
Place
Locale Reference	SEA.Airport
State Reference	WA
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Landing
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Qualification	Air Traffic Control Fully Certified
Person 2
Function	Approach
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Narrative:

IFR conditions and fog; all runways were visible but not much else. An air carrier landed and exited runway quickly for traffic with large overtake close in trail. It was very busy and consistently receiving aircraft on frequency short final. We were unaware air carrier X had not checked on for runway 16R and launched air carrier Y off of runway 16L. Air carrier X was over the airport when we noticed he had gone around. We reached out to him twice with no answer so I contacted final just in time to here them turn air carrier X and I heard him respond. At that point the local controller turned air carrier Y to a 145 heading and I coordinated that with the appropriate departure sector. We were coming up on having delays so I was concentrated on departures at the time. Recommendation; make sure we receive aircraft earlier then we could have ensured separation easily.

Original NASA ASRS Text

Title: SEA/S46 Controllers and flight crew members described a go around event at SEA that resulted in a loss of separation when a departure was sighted flying along side during the go around.

Narrative: IFR conditions and fog; all runways were visible but not much else. An air carrier landed and exited runway quickly for traffic with large overtake close in trail. It was very busy and consistently receiving aircraft on frequency short final. We were unaware Air Carrier X had not checked on for Runway 16R and launched Air Carrier Y off of Runway 16L. Air Carrier X was over the airport when we noticed he had gone around. We reached out to him twice with no answer so I contacted final just in time to here them turn Air Carrier X and I heard him respond. At that point the local controller turned Air Carrier Y to a 145 heading and I coordinated that with the appropriate Departure Sector. We were coming up on having delays so I was concentrated on departures at the time. Recommendation; make sure we receive aircraft earlier then we could have ensured separation easily.

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.

Sea/S46 controllers and flight crew members described a go around event at sea that resulted in a loss of separation when a departure was sighted flying along side during the go around.