Iah tower controller reported of an aircraft going around due to wake from the preceding departure. ...

Narrative:

Landing and departing runway 9. Aircraft X a B763 was instructed to line up and wait on runway 9 and issued traffic of aircraft Y a B739 on a 4 mile final. Aircraft Y was issued traffic a heavy boeing 767 departing prior to his arrival and caution wake turbulence. As soon as the previous departure had lifted off of the runway aircraft X was cleared for takeoff and assigned runway heading. Aircraft X was again issued traffic now on a 2.5 mile final. Aircraft X did not begin take off roll in a quick manner and was starting rotation as aircraft Y crossed the landing threshold. Aircraft Y appeared to get some wake turbulence and lifted back up from approx. 200 AGL and stated he was going around. I immediately issued a turn 20 degrees to the right and a climb to 2;000 feet to get aircraft Y out of the wake and coordinated verbally with local west to stay on a 110 degree heading until proper IFR separation behind a heavy jet allowed me to turn north. Aircraft Y was then issued a turn to 360 degrees and a climb to 3;000 feet and handed off to the next controller to be re-vectored back to final. Discussed the operation with the supervisor. Each aircrew is different and not all air crews can make a 2.5 mile departure window. I will no longer line up and wait any [company name removed] heavy jets with traffic on less than a 5 mile final.

Original NASA ASRS Text

Title: IAH Tower Controller reported of an aircraft going around due to wake from the preceding departure. Controller turned go-around traffic to avoid more of the wake. Controller realized that there should have been a larger hole to depart the heavy.

Narrative: Landing and departing Runway 9. Aircraft X a B763 was instructed to line up and wait on Runway 9 and issued traffic of Aircraft Y a B739 on a 4 mile final. Aircraft Y was issued traffic a heavy Boeing 767 departing prior to his arrival and caution wake turbulence. As soon as the previous departure had lifted off of the runway Aircraft X was cleared for takeoff and assigned runway heading. Aircraft X was again issued traffic now on a 2.5 mile final. Aircraft X did not begin take off roll in a quick manner and was starting rotation as Aircraft Y crossed the landing threshold. Aircraft Y appeared to get some wake turbulence and lifted back up from approx. 200 AGL and stated he was going around. I immediately issued a turn 20 degrees to the right and a climb to 2;000 feet to get Aircraft Y out of the wake and coordinated verbally with local West to stay on a 110 degree heading until proper IFR separation behind a heavy jet allowed me to turn North. Aircraft Y was then issued a turn to 360 degrees and a climb to 3;000 feet and handed off to the next controller to be re-vectored back to final. Discussed the operation with the supervisor. Each aircrew is different and not all air crews can make a 2.5 mile departure window. I will no longer line up and wait any [company name removed] heavy jets with traffic on less than a 5 mile final.

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	1304492
Time
Date	201510
Local Time Of Day	1801-2400
Place
Locale Reference	IAH.Tower
State Reference	TX
Environment
Light	Night
Aircraft 1
Make Model Name	B767-300 and 300 ER
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb Takeoff
Route In Use	None
Flight Plan	IFR
Aircraft 2
Make Model Name	B737 Next Generation Undifferentiated
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 3.8
Events
Anomaly	ATC Issue All Types Conflict Ground Conflict Less Severe Deviation - Procedural Clearance Inflight Event / Encounter Wake Vortex Encounter

Iah tower controller reported of an aircraft going around due to wake from the preceding departure. Controller turned go-around traffic to avoid more of the wake. Controller realized that there should have been a larger hole to depart the heavy.